Explore Apps

Watch neural particles learn, compete, and evolve in a live artificial-life sandbox. Source: https://github.com/xcontcom/neuroparticles (MIT).

Paste a job posting and your history — get a resume rewritten for the role where every claim traces back to your own file, plus a complete matching cover letter. Unsupported requirements are left out and listed, never invented — then turned into questions, so what you forgot to write down can still count. Rewrite any line or the whole document in a click, pick one of six templates, and download PDF, editable Word (.docx) or ATS-safe plain text, with ATS keywords, gap analysis and interview prep.

Paste an article, pick one of 25 open-source visual styles, and get an art-directed illustration plan with the finished images: the moments worth illustrating, one composition per shot, complete copy-ready prompts for any image model, and one-click in-app GPT Image renders of every shot. Styles derived from github.com/hahayang888/zyncli-template (MIT), the open-source library behind zyncli.com's template gallery.

Describe an animation in words and get production-ready Lottie JSON, rendered live on a scrubbable stage: logo reveals, loaders, success states, kinetic type, KPI count-ups. Refine it conversationally, export JSON, PNG frames or a self-hosted embed snippet. A free client-side inspector opens any existing Lottie file and lints it against what web renderers actually support. A derived work of the open-source text-to-lottie framework by Diffusion Studio (github.com/diffusionstudio/lottie, MIT).

Paste a sample of the structured text you need to parse and say what you want extracted. Get a senior data engineer's parse plan: an honest verdict between regex-first, hybrid and LLM-first, working regex patterns tested against your sample right in the browser, ordered cleaner rules, the confidence checks that decide which records escalate to a model, an LLM stage sized for cost, and a starter parser script in Python or JavaScript. A free instant profile measures format consistency, sniffs delimiters and flags OCR noise while you type. Derived from the @affaan-m/regex-vs-llm-structured-text skill on SkillSafe.

Paste your Prometheus configuration — prometheus.yml, alerting and recording rule files, or both — and get an observability-engineer review: a production-readiness posture, the scrape-job and rule inventory, prioritized findings with corrected YAML, a reconciliation of the free client-side prescan, quick wins and focus areas. Derived from @wshobson/prometheus-configuration (MIT).

Paste your API route code (any framework), an existing OpenAPI/Swagger document, or plain design notes — and get a complete OpenAPI 3.1 specification plus a senior API engineer's contract review: a ship-readiness posture, the endpoint inventory, prioritized findings with corrected spec fragments, quick wins and focus areas. A free instant prescan extracts your routes and flags contract smells before you run anything. Export the spec as openapi.yaml or openapi.json. Derived from the @wshobson/openapi-spec-generation skill.

Paste a general ledger extract and a subledger extract for the same scope. The browser chooses the key that actually aligns them, matches both sides, puts every row in exactly one bucket, works the one-sided residual for split postings, sign flips and unit-scale errors, and finds which break resolved on its own would clear the residual by simulating it rather than by ranking sizes. All free, no account. The metered pass assigns each break a cause and a one-line note, and may only choose a cause the measurement admits. Derived from the @anthropics/gl-recon skill (anthropics/financial-services-plugins, Apache-2.0).

Paste a SKU file and the browser sizes every safety stock, forms every reorder point and writes a case-pack-rounded buy list, refusing what the normal distribution cannot carry. A derived work of the inventory-demand-planning skill by affaan-m.

Paste a monthly MRR movement table and the browser reconciles it before it trusts it: every month re-added from its own components against a tolerance built from the precision it was written to, and the chain from each ending to the next beginning checked separately. Then net and gross dollar retention with the identity between them proved, the quick ratio, growth, CAC payback, the magic number, the burn multiple, the Rule of 40, a cohort hazard curve, and a lifetime value printed next to what sixty months actually pays so the closed form's error is visible. What moved retention is found by removing each segment and re-measuring both halves, not by sorting the churn column, and a number that cannot be computed honestly is refused with its reason. All of that is free and runs in the tab. The metered AI pass writes the commentary and may only name a cause the measurement admits. A derived work of the @wshobson/startup-metrics-framework skill (wshobson/agents, MIT).

Paste Flutter/Dart code and get an expert state-management review: ephemeral vs app state classification, findings with corrected Dart, a 12-point checklist, and a full MVVM+provider refactor. Free client-side prescan for classic smells (setState misuse, undisposed controllers, logic in build). Derived from @flutter/flutter-managing-state (BSD-3-Clause).

Paste an option chain and a price history: the browser solves an implied volatility for every quote by bisection and prints the iterations and the price residual, computes the Greeks, fits the out-of-the-money smile to an at-the-money level and 25-delta wings, measures realized volatility with its own sampling band, checks put-call parity, call convexity and calendar arbitrage, and finds the decisive quote by removing each one and refitting. The shortcuts are printed with the vol points by which they miss; a quote that admits no volatility is refused with its reason. Measurement is free. The AI pass writes the desk note and may only use language the measurement admits. A derived work of the option-vol-analysis skill by Anthropic (anthropics/financial-services-plugins). Not investment advice.

Paste a close pack - line, current, prior and budget - and the browser computes every variance in amount and percent, refuses a percentage where the base makes it meaningless, applies your materiality rule, foots every subtotal against the lines above it, and finds the one line that is decisive by removing it and re-measuring. Free, no account. The AI pass writes only the driver behind each flagged movement, and may not explain a line your activity notes never mention. A derived work of the @anthropics/variance-commentary skill (anthropics/financial-services-plugins).

Paste a fixed income holdings table and the browser prices every bond from its own cashflow schedule: accrued interest on the stated day count, a yield solved by bisection or honestly refused, Macaulay and modified duration, convexity and DV01, a market-value weighted portfolio whose invariants are proved rather than promised, sector rating and maturity splits, an eight-quarter cashflow waterfall, and eight rate scenarios computed by full repricing with the duration-and-convexity estimate's error printed beside them. The holding that drives a scenario is found by simulating its removal, not by sorting. All free, no account. The metered pass writes the commentary and may only assign a theme the measurement admits. Derived from the @anthropics/fixed-income-portfolio skill (anthropics/financial-services, Apache-2.0).

Paste a CRM pipeline export and a quota: the browser weights every deal by stage, splits the pipeline into a commit floor and an upside band, flags what slipped or went quiet, and solves the gap - naming the exact deals that would close it, or admitting the pipeline cannot. Free, no account. The AI pass makes the deal-by-deal call and is counted back against the measurement. A derived work of the @anthropics/forecast skill.

Paste a new hire's details, your team roster, your access list and your company holidays. The browser computes the whole calendar for free: Day 1 through Day 5 as real business days, every account and laptop backfilled from its lead time to the date it must be ordered by, which of those dates have already passed, the provisioning order with prerequisites first, a Day 1 timetable that fits the actual workday, week-1 1:1s with whoever does not fit named, ranked buddy candidates, plus a plan document, a task CSV and an .ics calendar. The AI pass adds the role-specific tasks, measurable 30/60/90 goals, a reading list and a sendable welcome email - and every date and person it returns is re-counted against the measurement. A derived work of the @anthropics/onboarding skill.

Paste your market assumptions and your segment table. The browser does the whole model for free: the top-down build as a filtered waterfall, the bottom-up build as accounts x ACV narrowed by reachability and attach, the two triangulated at TAM, SAM and SOM with the exact driver value that would reconcile them solved for, the claimed SOM tested against the sales capacity that would have to deliver it by both the quota and the funnel method, the LTV, LTV/CAC and CAC payback the claim implies, a one-at-a-time sensitivity sweep ranking every driver, a provenance ledger marking each number sourced, stated or assumed, plus a sizing memo, a driver CSV and a measurement JSON. The AI pass adds the judgement — one verdict per driver with the source that would settle it, which build to fix, the questions a partner will ask and the memo paragraph — and every driver it reviews is counted exactly once against the measurement. A derived work of the @sickn33/startup-analyst skill.

Paste your roster, who is on what, and what is coming next. The browser nets every person hours down by the business days they are present and the leave they have booked, measures utilisation against the target for their role, finds the crunch week the period average hides, and then actually staffs the upcoming work - highest priority first, week by week, only from people whose roles match - so the shortfall it reports is one you cannot wish away with a total. Short, it names the smallest set of initiatives whose deferral genuinely clears it, prices the hire with its lead time and ramp, or says plainly that the committed work does not fit the people who exist. All free, no account. The metered pass adds the move for each person out of band and the staffing verdict on each initiative, and every hour it quotes is counted back against the measurement. A derived work of the @anthropics/capacity-plan skill.

Drop a speech-recognition .srt or .vtt and get a corrected file whose timings never move. The browser does the whole deterministic pass for free: it parses SRT and WebVTT even when the blank-line separators or cue numbers went missing, reports the duplicate and out-of-order numbering, overlaps, zero-length, reversed and unparseable cues an automatic export leaves behind, measures chars-per-second and line length against separate Latin and CJK ceilings, applies the terminology you declare across every spacing, casing and hyphenation variant of it, joins spoken punctuation back into identifiers, repairs the homophones whose direction is not in doubt, and derives a candidate glossary from the file itself when you have no term list — then writes the corrected file, the word-level diff, the changes CSV and the measurement JSON, with no account and nothing charged. Cue timings, numbering and the one-to-one cue correspondence are invariants: every export is re-parsed and compared against the original before it can leave the page. The AI pass receives only the cues no rule can settle — a phonetic mangling that normalises to nothing, a homophone the sentence has to decide — and every cue it returns is counted exactly once, checked in both directions against the raw text it was handed, and held to the spellings you declared. A derived work of the @sugarforever/subtitle-correction skill (MIT).

Paste a finished A/B test and get the readout the decision meeting needs. The browser does the whole statistical pass for free: the two-proportion z-test (pooled standard error for the p-value, unpooled for the interval) or Welch's test, confidence intervals on the absolute and relative lift, the power the design achieved, the sample size its declared MDE required, the smallest effect the collected exposure could have detected, the sample-ratio-mismatch chi-square, the whole-business-cycle duration check, the peeking penalty with the Pocock boundary, a Holm correction across the guardrail family, and a decision reached by rule — ship, investigate, extend, stop, revert or invalid. When the result is inconclusive it solves for what would settle it: the exposure per arm and the extra days at your own measured traffic rate. The AI pass adds only judgement — whether the hypothesis was testable, what a flat metric means for the product, the validity threats the arithmetic cannot see, and the next experiment — and every reading it gives is counted exactly once against the measured metrics and checked against the measured significance. A derived work of the @phuryn/ab-test-analysis skill.

Drop your source files and the browser measures what the code actually does across nineteen convention categories — indentation, quotes, semicolons, brace placement, naming case per declaration kind, comment style, line length, function length, nesting depth, blank-line rhythm, imports — each with exact variant counts, the majority, a conformance percentage and every deviating line named by file and number. From those counts alone it writes a complete standards document, an .editorconfig and a deviations CSV, free and with no model call. The metered pass adds the wording, the rationale, the enforcement advice and the judgement about what is too split to codify — then every rule it wrote is reconciled against the counts in public: each measured category must be claimed exactly once, no rule may contradict its measured majority, and a conformance figure that drifts from the count is shown as written beside the corrected number. A derived work of the @github/write-coding-standards-from-file skill.

Paste a plan, a decision or a design. A deterministic prescan measures what the text leaves unsettled — placeholders, vague quantifiers, unresolved choices, undefined acronyms, hedges, untestable commitments — free in your browser with no model call. Then each round asks the whole frontier of questions whose prerequisites are settled, every one with a recommended answer, and the same free lane re-checks the round against what it measured. Answer, re-run, repeat until the frontier is empty. A derived work of the @mattpocock/grill-me skill (MIT).

Drop an AWS, Azure, GCP or OCI cost export and get a FinOps savings plan. The browser does the arithmetic for free with no model call: it maps the columns whatever they are named, totals and ranks the bill, measures untagged spend against your required cost-allocation tag keys, matches fifteen named waste rules each with the recoverable fraction it assumes stated next to the number, scores commitment coverage against eligible compute, models storage tiering and isolates data transfer, finds the movers and the days beyond two sigma, rightsizes on measured utilisation where the export carries it, grades the estate, and generates the Terraform budget, tag defaults and lifecycle rules your own numbers imply. The AI pass adds the judgement: ordered levers with effort and risk, a fix and a risk note per finding, a commitment plan in the term you said you would accept, and a thirty-day sequence that puts deletions before commitments. A derived work of the cost-optimization skill by @wshobson (github.com/wshobson/agents).

Paste a research brief and get the blueprint a consulting team builds before collecting anything: 2 to 4 complementary frameworks chosen from a 32-entry catalogue, a chapter skeleton where every chapter carries a falsifiable hypothesis, the exact data each chapter needs with priority, period, source categories and search keywords, a chart plan, a feasibility read, and a ready-to-collect / scope-first / reframe call on the brief itself. A free browser-side scan reads the brief first and raises a numbered gap for every scoping decision left open, which the plan must then answer one by one. A derived work of the open-source @bytedance/consulting-analysis skill from ByteDance DeerFlow.

Promote the lessons that have matured out of an agent memory file into the instruction file they belong in, without losing a detail or repeating a rule. The free half is a real engine: paste both files and the browser parses each into frontmatter, a heading tree and atomic rules, scores every lesson's maturity from countable signals, sorts each into exactly one bucket — contradicts a standing rule, already covered, too green, overlapping, genuinely new — with the partition asserted by counting, merges the applyTo globs with real subsumption, and writes both the merged instruction file and the memory file that should remain. The AI pass does the consolidation judgement, and the same checker re-measures its output for knowledge loss in both directions, redundancy and surviving contradictions. A derived work of @github/memory-merger (github/awesome-copilot).

Paste your BullMQ producer and worker code and get a senior infrastructure engineer's review: a production-readiness posture, the queue and worker inventory, prioritized findings with corrected JS/TS fragments, quick wins and focus areas. A free instant prescan flags missing retries, absent retention, default concurrency, unwatched failures, unawaited adds, connection misconfiguration and literal secrets before you spend anything. Derived from @sickn33/bullmq-specialist (Apache-2.0).

Paste a block of spreadsheet formulas (Excel's Show Formulas view, copied as cells) and get the audit a senior modeller would give it: every defect located by its real cell address with the problem, the formula as pasted and the formula to put back; the integrity checks run explicitly and reported pass / fail / unknown / not-applicable; and a clean, fix-first or broken verdict. A free browser-side parse runs first - it builds a real cell model with a reference dependency graph and flags error values, SUM ranges that stop short of their block, the one cell that breaks the pattern of a copied row or column, constants hardcoded inside formulas, circular chains, external-workbook links, volatile functions and unguarded lookups - and the audit must confirm or explicitly set aside every flag it raises. A derived work of @anthropics/audit-xls.

Paste a scheduling email or chat thread and get the meeting booked: every participant with their time zone, every stated constraint with the quote that backs it, up to three proposed slots each with a per-person local-time table, a ready-to-send reply, and a .ics invite built in your browser. A derived work of cal.diy (https://github.com/calcom/cal.diy), the community-driven open-source scheduling platform.

Paste up to twelve raw research assets - interview transcripts, survey exports, support tickets, NPS verbatims, review dumps, win/loss notes - tag each one, and get an evidence-bound voice-of-customer synthesis: themes with verbatim quotes and confidence, jobs to be done, pains, trigger events, desired outcomes, the customer's own vocabulary, alternatives, contradictions, personas only when the evidence supports them, and the gaps that need more research. A free client-side prescan counts your evidence before anything runs. Adapted from the @coreyhaines31/customer-research skill on SkillSafe.

Paste a vendor proposal, quote, renewal notice or contract excerpt and get a procurement-grade review: a TCO table built from the document's own numbers, risks with mitigations, quote-backed strengths and concerns, a side-by-side matrix for comparisons, a proceed/negotiate/pass call and concrete negotiation points. A derived work of @anthropics/vendor-review (Anthropic knowledge-work-plugins).

Paste an income statement, balance sheet or cash flow statement and get an analyst's read: a financial-health posture (sound / watch / stressed), every ratio the figures allow with a one-line reading, prioritized findings with the arithmetic shown, follow-up checks and focus areas. A free in-browser prescan recognizes your line items and computes margins, ROE, liquidity, leverage, coverage and valuation ratios before you run anything. Derived from @anthropics/analyzing-financial-statements (MIT).

Brief in, theme out: a named seven-role palette with exact hex values, font pairings, a type scale and usage rules — every contrast claim re-verified in your browser. Ten preset themes free to preview and export as CSS variables, Tailwind config or JSON tokens. Derived from the @anthropics/theme-factory skill.

Paste a meeting transcript (speaker-labeled lines, VTT or SRT), name yourself, pick a focus, and get a communication-pattern review: a strong/mixed/needs-work verdict, quoted moments where you hedged, dominated or deflected — each with the better phrasing — a five-area communication health check, speaking statistics, a scored twelve-item checklist, strengths, a growth plan and next steps. A free client-side speaker table (talk share, questions, fillers, hedges) reads the paste before you run anything.

Paste a system or architecture description and get an AppSec threat model: a posture verdict, components and trust boundaries, an attacker model with explicit non-capabilities, entry points, multi-step abuse paths, a prioritized threat table with mitigations and detection ideas, and the focus areas to review first. A free client-side prescan flags attack surfaces, sensitive assets and exposure hints, and the model must reconcile every one. Derived from the @openai/security-threat-model skill.

Paste your Terraform HCL and get an infrastructure-engineer review: a production-readiness posture, the block inventory, prioritized findings with corrected HCL fragments, quick wins and focus areas. A free instant prescan flags literal secrets, open ingress, public ACLs, wildcard IAM, missing version pins, local state, untyped variables and hardcoded AMIs while you type. Derived from @wshobson/terraform-module-library (MIT).

Paste your Bash script (and optionally its helper files) and get a senior infrastructure engineer's defensive review: a production-readiness posture, the inventory of every file and function, prioritized findings with corrected shell fragments, a reconciliation of the free client-side prescan, quick wins and focus areas. The instant prescan (strict mode, unguarded rm -rf, curl piped to sh, backticks, unquoted $@, read without -r, fixed /tmp paths, missing traps, literal secrets and more) runs free in the browser. Derived from @wshobson/bash-defensive-patterns (MIT).

Paste Swift code and get a Swift 6.2 Approachable Concurrency migration review: data-race hazards, actor-isolation diagnosis, severity-tiered findings, a migrated rewrite in your own names, and a concrete build-settings migration plan. Free in-browser concurrency prescan before you sign in. Derived from @affaan-m/swift-concurrency-6-2.

Paste what your product is and what it charges - and get an expert pricing-strategy review: a raise/hold/restructure verdict, a value-ratio sanity check, severity-ranked findings with concrete recommendations, a scored twelve-item pricing checklist, and a recommended tier structure. Includes a free client-side value-ratio calculator and prescan. Derived from @github/gtm-technical-product-pricing (MIT).

Paste Rust code — one file, several files, or a module — and get an idiomatic-Rust review: a sound/refactor/rework verdict, a five-area health check (ownership & borrowing, error handling, type design & API surface, concurrency & async, idioms & structure), severity-ranked findings each with corrected Rust, a twelve-item checklist scored against the paste, and a full refined.rs rewrite. A free instant prescan flags unwraps outside tests, borrow-checker-appeasing clones, Box<dyn Error> in public APIs, wildcard match arms, uncommented unsafe, blocking calls in async, String params, swallowed Results, unbounded channels and stringly-typed state before you run anything. Derived from @affaan-m/rust-patterns (MIT).

Upload one reference image and get a procedural, animation-ready Three.js reconstruction rendered live in the browser: primitives, lathe profiles and PBR materials, exportable as spec JSON and factory source code. Derived from the open-source img2threejs skill by hoainho (github.com/hoainho/img2threejs, Apache-2.0).

Paste UI code — HTML, JSX, Vue or Svelte — and get a scored compliance audit against the Web Interface Guidelines: six groups scored out of 10, an issue list quoting the exact code with line numbers and concrete fixes, a corrected rewrite of the worst block, and a free instant lint that runs in your browser. Derived from the @vercel-labs/web-design-guidelines skill.

Paste your company facts and the investor's thesis - get a personalized cold email, warm intro request, follow-up, or investor update with a traceable personalization map, follow-up cadence, and a quality gate that bans filler praise. Derived from @affaan-m/investor-outreach.

Paste code — a module, a component, a handler, a query layer — and get a performance review: severity-ranked findings each with a corrected snippet, the quick wins worth shipping first, an optimized rewrite of your worst hotspot, and a five-area health check across data access, memory, CPU, network and rendering. A free instant prescan flags the classic anti-patterns before you run anything. Derived from @mastra-ai/performance-review.

Paste a service description and get a complete SLI/SLO package: user-centric SLIs with PromQL, justified SLO targets, an error-budget policy, multiwindow burn-rate alerts with verified arithmetic, gaps and open questions. Free error-budget calculator and burn-rate ladder run in your browser. Derived from the @wshobson/slo-implementation skill.

Paste raw incident notes - Slack scrollback, an on-call log, pager timestamps - and get a complete blameless postmortem: an honest severity call, a reconstructed timeline, a 5 Whys root-cause chain grounded in your notes with evidence, contributing factors, what went well and poorly, and prioritized ticket-ready action items exported as CSV. A free instant prescan finds the timestamps, blame-language and incident signals in your paste before you run anything. Derived from the @wshobson/postmortem-writing skill (MIT).

Paste a rough AI prompt and get an optimized, self-contained rewrite built on proven prompting frameworks (RTF, RISEN, Chain of Thought, RODES and seven more), plus the gaps found, clarifying questions when details are missing, and a quality self-check. Free instant prompt lint runs in your browser. Derived from @sickn33/prompt-engineering.

Paste code — an API endpoint, a module, a diff — and get an application-security review: a ship/fix-first/block verdict, severity-ranked findings each with corrected code, a twelve-item pre-deploy checklist scored against your paste, and a hardened rewrite. A free instant prescan flags hardcoded secrets, SQL concatenation, unsafe HTML sinks and more before you run anything. Derived from @affaan-m/security-review.

Paste PostgreSQL — a schema, a migration, or a slow query — and get an expert review: severity-ranked findings each with a runnable fix, the missing indexes as complete CREATE INDEX statements, a corrected rewrite of your SQL, and an honest five-area health check. A free instant prescan flags the classic anti-patterns (varchar(n), naive timestamps, float money, int primary keys, OFFSET pagination, unindexed foreign keys, unwrapped auth.uid()) in your browser before you run anything. Derived from @affaan-m/postgres-patterns.

Paste your backlog - story lines with points, owners and dependencies - plus the sprint scenario: team, dates, velocity history, PTO, carry-over, pressure. Get the plan a veteran scrum master would walk into planning with: a commitment call, the capacity arithmetic shown, a sprint goal, a committed backlog where every story earns its slot, the cut list with what unblocks each story, risks, actions and open questions. Every number traceable to the paste. Free in-browser story scanner and capacity calculator. Derived from @shubhamsaboo/sprint-planner.

Paste a task spec and the deliverable produced against it. Two independent AI reviewers check it against your rubric with no shared context - both must pass before it ships. A NICE verdict means it ships; NAUGHTY returns a deduplicated fix plan ordered blockers-first and tagged by which reviewer caught what, plus a reviewer-agreement metric, a paste-ready fix prompt, and a re-check that diffs the revision criterion by criterion. Derived from @affaan-m/santa-method.

Paste your product brief and competitor notes — get a Porter Five Forces scorecard, a positioning map with every player placed, the Blue Ocean four-actions grid, differentiation opportunities and a rewritten positioning statement, grounded only in what you pasted.

Paste an article or docs page plus its primary keyword and get a scored 30-point on-page SEO audit: title, meta description, keyword placement, structure, featured snippets, internal linking and technical checks - each with counted evidence, priority fixes, and the rewritten title and meta supplied at the right length. The mechanical scan runs free in your browser. Derived from @leonardomso/seo-review.

Paste a pull request - the unified diff, title and description - and get a presenter-ready walkthrough: segments ordered by understanding rather than by file, the exact hunk or function to show on screen for each beat, and the narration to speak over it in the author's voice. Generated files like lockfiles and API reports are filtered to a Not shown list. The diff scanner runs free in your browser. Derived from @tldraw/pr-walkthrough.

Paste the code review feedback you received plus the code it is about, and get each comment triaged the way a senior engineer receives review: verified against the code, then routed to Implement (with the concrete change), Push back (with the technical reason), Clarify first (with the question to ask) or Verify in code (with exactly what to check) - plus a short, professional reply with zero performative agreement. Derived from @obra/receiving-code-review.

Paste raw meeting material - a transcript, a chat log or rough notes - and get minutes people actually use: the agenda as covered, key discussion points with the numbers quoted, decisions stated as decisions, an action-items table with owners, deadlines and status, next steps and the parking lot. A free in-browser scanner detects speakers, commitment-shaped lines and dates before you ever sign in. Derived from @shubhamsaboo/meeting-notes.

Paste your company's source of truth - traction, pricing, the raise, use of funds, team, milestones - and get a one-pager, investor memo, application answers or deck outline where every number is cross-checked, conflicts are surfaced and nothing is invented. The fact check (completeness, use-of-funds sums, MRR/ARR arithmetic, double-valued metrics) runs free in your browser. Derived from @affaan-m/investor-materials.

Paste work orders - processing hours, due times, families - plus your scenario: lines, capacities, changeover matrices, frozen windows, breakdowns, rush orders. Get the schedule a senior production scheduler would post: the constraint identified with the load arithmetic shown, a job sequence with the reason for every slot, changeovers planned rather than suffered, risks, actions and open questions. The job scanner and bottleneck calculator run free in your browser. Derived from @affaan-m/production-scheduling.

Paste an energy decision - a utility bill breakdown, a peak-demand or interval summary, supplier bids, a PPA term sheet, a rate-case notice, a broker thread - and get it worked like a senior energy procurement manager would: the scenario named, the risk called, the single next move argued from the numbers on the page, and every trap flagged - ratchets, basis, curtailment, credit postings, unhedged index positions. Then leave with the artifact: a one-page memo for the approver, a CSV task list with owners and due dates, an .ics of every dated commitment, and prefilled replies to the counterparties the moves name. The load-factor, demand-charge, ratchet, bid-comparison and PPA calculator - and the interval-file reader - run free in your browser, no sign-in. Assessments are kept on your account and diffed against the previous run when a bid is re-quoted. Derived from @affaan-m/energy-procurement (ECC).

Paste a return case - an RMA request, a customer email thread, inspection notes, a return history, a warranty claim - and get it worked like a senior returns operations manager would: the case classified, the item graded A to D, the single next action called, the fraud signals scored against the standard table, the disposition argued from the economics, and the refund and vendor recovery nailed down. The fraud score, disposition and recovery calculator runs free in your browser. Derived from @affaan-m/returns-reverse-logistics (ECC).

Describe the product moment - the screen, what the user is doing, how they feel - and get the microcopy to ship: buttons, error messages, empty states, dialogs and tooltips, with real alternatives, the rationale, localization notes and the open questions named. Paste the copy you have today for a string-by-string review. The copy linter runs free in your browser. Derived from @anthropics/ux-writing.

Turn a one-line objective plus your project facts into a dependency-ordered construction plan any coding agent can execute cold: self-contained context briefs, one-PR-sized steps, real verification commands, observable exit criteria, and parallel waves computed from the dependency graph. Paste an existing plan and the analyzer audits it free in your browser; forks only you can settle come back as open decisions, never guesses. Derived from @affaan-m/blueprint.

Paste a JavaScript or TypeScript module and get a complete Vitest or Jest unit test file: behavior-named tests, boundaries and failure paths covered, determinism hazards handled with fakes, plus a test plan and honest notes on what could not be tested. The surface scanner and hazard detector run free in your browser. Derived from @tldraw/write-unit-tests.

Describe the capability you want an AI agent to have - or paste a SKILL.md you already use - and get a complete, well-formed agent skill: trigger-complete frontmatter, an imperative body under the 500-line budget, a bundled-resource plan, and an honest review that raises open questions instead of inventing answers. The SKILL.md linter runs free in your browser. Derived from @tldraw/skill-creator.

Paste a nonconformance - an NCR form dump, an SPC alert, a failed incoming inspection, a customer complaint - and get it worked like a senior quality engineer would: severity classified by consequence, containment with the exposure bounded, root-cause hypotheses with verification steps, a disposition recommendation, a reasoned CAPA call and the regulatory notifications owed. The SPC quick check (control limits, Western Electric rules, Cp/Cpk) runs free in the browser. Derived from @affaan-m/quality-nonconformance (ECC).

Paste your employee roster and get the people report leadership asks for - headcount shape, trailing-12-month attrition with the arithmetic shown, spans of control, tenure mix, risks and sequenced recommendations, built only from your own data. A free in-browser org-stats scan tallies headcount, departures, spans and data errors as you type. No benchmarks are ever invented and no demographics are ever inferred.

Paste your employee handbook and ask a question in plain language - get a direct answer built only from what the handbook says, with every supporting sentence quoted verbatim and machine-checked against your paste in the browser. A coverage verdict - Answered from handbook, Partially covered, Not in handbook - binds to the gaps: what the handbook leaves open is named, never filled with what companies typically do. The section map, topic detection and question match run free with no sign-in. Derived from @anthropics/employee-handbook (knowledge-work-plugins).

Paste UWP C# or XAML and get it back rewritten for WinUI 3 / Windows App SDK: every legacy API replaced with its modern equivalent, nine named findings marked MUST-FIX, CHECK or CLEAN, the manual steps that remain, compatibility notes, and a verdict with a confidence score. The legacy-API scan and a searchable UWP-to-WinUI 3 API map run free in the browser. Derived from @github/winui3-migration-guide.

Paste your MCP server — TypeScript SDK, Python FastMCP or tool-definition JSON — and get a senior MCP engineer review: a readiness posture, the tool inventory, prioritized findings with corrected fragments, quick wins and focus areas. A free instant prescan flags missing descriptions and schemas, any-typed params, generic errors, unpaginated list tools, missing annotations, literal secrets, stdout logging on stdio and deprecated SSE before you run anything. Derived from @anthropics/mcp-builder.

Paste an inbound legal inquiry — a data deletion request, litigation hold question, NDA ask, or vendor compliance email — and get an instant triage: category, template-or-escalate verdict with the trigger quoted, a drafted reply with placeholders, follow-up actions, and review notes. Derived from @anthropics/canned-responses. Drafts for human review; not legal advice.

Paste your Kubernetes YAML manifests and get a senior platform architect review: a production-readiness verdict, resource inventory, prioritized findings with concrete YAML fixes, quick wins, and the focus areas to tackle first. Free instant prescan catches missing limits, probes, :latest images, privileged pods and exposed services before you spend anything. Derived from @sickn33/kubernetes-architect (MIT).

Paste a resolved support ticket, a recurring question or a workaround write-up and get back a publish-ready knowledge base article: a searchable customer-language title, the right article type (How-to, Troubleshooting, FAQ, Known issue, Reference), category, tags and audience, a structured body built only from what the source establishes, publishing notes for the editor, and every unconfirmed fact routed to Gaps to fill instead of into the article. A publish-readiness verdict binds to those gaps: an unfilled gap rules out Publish as is. The source scan, title linter and article lint run free in your browser. Derived from @anthropics/knowledge-management (knowledge-work-plugins).

Paste an Azure workload description - get an enterprise architecture plan: resource topology, network design, Well-Architected alignment, risks, and a Bicep or Terraform starter. Derived from @microsoft/azure-enterprise-infra-planner.

Paste Java 17+ source and get the review a staff engineer would leave on the pull request: which stack it belongs to, a ship-it / tidy-first / rework verdict, and findings that quote a verbatim line from your own code. A free browser-side analyser lexes the source first (comments and string literals blanked so nothing false-matches), detects Spring Boot versus Quarkus from weighted evidence rather than guessing, and runs thirty deterministic rules — broad and silent catches, Optional.get(), field injection, raw types, static mutable state, concatenated log messages, magic numbers, deep nesting. The AI review must then adjudicate every one of those as confirmed or set aside, and every quote it makes is checked against your source. A derived work of @affaan-m/java-coding-standards from the open-source everything-claude-code collection (MIT).

Paste React, Vue, Angular, Svelte or plain HTML/JS source and get an i18n readiness audit scored out of 30: hardcoded strings, concatenation bugs, plural hacks, locale-unsafe formatting and RTL risks — plus a string-extraction plan with suggested keys and a downloadable en.json locale starter. The pattern scan runs free in your browser. Derived from @sickn33/i18n-localization.

Paste an email — subject, HTML or plain-text body, optionally your SPF/DKIM/DMARC records — and get an expert deliverability audit: an inbox/risky/spam verdict, severity-ranked findings each with the corrected record, header or copy, a scored twelve-item checklist, a five-area health check, and your own email rewritten to land. A free instant prescan flags spam-trigger phrasing, missing unsubscribe, image-heavy bodies and broken auth records before you run anything. Derived from @sickn33/email-systems.

Paste Swift/SwiftUI code and get an independent iOS design review written against Apple's Human Interface Guidelines as they stood in February 2026: a sound/refactor/rework verdict, a health check across five design areas (layout & adaptivity, typography & Dynamic Type, color & dark mode, navigation & structure, accessibility), concrete findings with corrected SwiftUI, a twelve-point checklist, coverage reconciliation against the free SwiftScan prescan, and a full refined rewrite shown as a line diff against your own paste. The prescan runs free in your browser. Guidance only: the guidelines change with each OS release and the current HIG governs. Not affiliated with, authorised by or endorsed by Apple Inc., and no prediction of App Review outcomes. Derived from @wshobson/mobile-ios-design (MIT).

Paste GraphQL SDL and resolver code and get an expert API review: a sound/refactor/rework verdict, a five-area health check, severity-ranked findings with corrected SDL, a scored twelve-item checklist, and a full refined schema rewrite. A free instant prescan flags Int IDs, unpaginated lists, open introspection, missing depth limits and N+1 resolvers before you run anything. Derived from @sickn33/graphql (MIT).

Paste a description of a system, a process, a data model or a set of interactions and get a real diagram file: downloadable as .drawio for draw.io and the hediet.vscode-drawio extension, as SVG, as Mermaid for a README, and as node and edge CSVs. Every diagram is drawn with one geometry - labelled boxes on tiers, joined by orthogonal connectors, with groups as dashed boundaries - so choosing flowchart, architecture, sequence, ER, UML class or network changes what the diagram contains, not the notation it is drawn in: there are no sequence lifelines, no ER crow's feet and no UML attribute compartments. The AI decides the shapes, what kind each one is, which layer it sits on, how they group, which connections exist and what each means; your browser does the deterministic half for free: layered layout, orthogonal routing, mxGraph XML, the SVG preview, and a structural check that catches duplicate ids, edges pointing at shapes that do not exist and shapes connected to nothing. A free browser-side scan reads the description first, scores it against the six diagram types, numbers every entity it finds and parses arrow syntax into a real graph - so a description that already states its arrows draws and exports itself at no cost. A derived work of @github/draw-io-diagram-generator.

Paste a freight exception - a damage report, a lost-shipment trace, an OS&D dump, a detention dispute, a carrier email thread - and get it worked like a senior freight exception analyst: type and severity called, the absorb-or-claim decision argued from the money, the evidence that decides it, mode-specific carrier handling, and the standard filing windows estimated from your dates under Carmack, COGSA and the Montreal Convention. Those windows and the liability limits are statutory and industry defaults, not commitments a carrier has made - your bill of lading, the carrier's tariff and any transportation agreement control, and nothing here is legal advice. The claims deadline and threshold calculator runs free in your browser.

Paste raw material - meeting notes, a bullet dump, research fragments, a rough draft - show it how you write, and get a publish-ready long-form article: concrete opening, proof over adjectives, your voice kept, banned AI patterns stripped, and every missing fact named instead of invented. Free in-browser material scan; derived from @affaan-m/article-writing.

Paste a documentation page and get a scored review: Readability, Voice, Completeness and Accuracy out of 10, a prioritized issue list quoting every defect with the concrete fix, and a rewrite of the worst passage. Paste the source code too and accuracy is verified against the truth. Free instant style lint runs in your browser. Derived from @tldraw/review-docs.

Paste an NDA, MSA, or vendor contract and get a severity-tiered risk review: red flags with the exact clause quoted, yellow flags worth negotiating, missing protections, key terms, and a negotiation playbook for each flag. Instant free prescan runs in your browser before you spend anything. Derived from @anthropics/contract-review. Not legal advice.

Paste a JavaScript or TypeScript module and get a publish-ready SDK documentation article: definition-first opening, working code against your real exports, YAML frontmatter, a style lint that hunts down AI writing tells, and honest notes naming the gaps only the author can fill. Derived from @tldraw/write-docs.

Paste code in any language, pick your audience, and get a structured explanation: what it does, how it flows step by step, an ASCII diagram, the concepts you need, the pitfalls hiding in it, and a 3-question comprehension check. Free client-side prescan (language detection, function inventory, complexity hotspots) runs before you spend anything. Derived from @sickn33/code-documentation-code-explain (MIT).

Paste Kotlin Compose UI code — a screen with its ViewModel, several files, or a grab-bag of composables — and get an expert review: a sound/refactor/rework verdict, severity-ranked findings with corrected Kotlin, a twelve-item Compose checklist, a five-area health check, and a full Refined.kt rewrite. A free instant prescan flags state-without-remember, exposed MutableStateFlow, GlobalScope work, unkeyed lazy lists, hardcoded colors and more before you run anything. Derived from the @affaan-m/compose-multiplatform-patterns skill (MIT).

Paste code - a function, a module or a diff - and get a prioritized review you can act on: a ship/fix/block verdict, critical/high/medium findings each with where it is, the problem with its impact and the concrete fix, what the code already does well, and recommendations. Security first, then performance, correctness and maintainability. A free in-browser quick scanner sizes the paste and flags the classic pattern hits before you ever sign in. Derived from @shubhamsaboo/code-reviewer.

Paste your compensation bands and employee roster and get a structured comp review built only from your own numbers: band placement with compa-ratios, outliers below min or above max, compressed adjacent bands, pay inversions, retention risks, and costed recommendations for the next cycle. The band-math scan runs free in your browser; market benchmarks are never invented. Derived from @anthropics/compensation-benchmarking.

Paste a company's financials - 10-K excerpts, a data screen, your notes - and build a three-scenario discounted-cash-flow model. The AI extracts and defends the assumptions; a deterministic in-browser engine computes the projections, CAPM WACC, terminal value, equity bridge, reverse DCF and base-centered sensitivity grids. Edit any assumption and recompute instantly, free. Derived from @anthropics/dcf-model. A modelling aid - not investment advice and not a professional valuation.

Chat with several AI models at the same time and compare their answers side by side. Every reply streams in with a receipt for what it actually cost - worst-case hold up front, charged at actual usage, the rest refunded. Pick up to four models per chat.

Paste a marketing page — HTML or plain copy — pick the conversion goal, and get a CRO audit: a five-area scorecard, quick wins worth shipping today, high-impact changes with effort estimates, A/B test ideas, and ready-to-paste copy alternatives for the weakest elements. A free instant prescan flags weak CTA copy, long forms and missing trust signals before you run anything. Derived from @coreyhaines31/page-cro.

Paste one piece of content - a launch note, a changelog, an essay, an original post - and get platform-native versions for X, LinkedIn, Threads and Bluesky: each under its character limit, each in your voice, none of them identical copy. Free in-browser limit and banned-pattern linter; every adaptation decision explained and every unresolved publishing call listed before you post. Derived from @affaan-m/crosspost.

Paste your Apple App Store or Google Play listing plus target keywords and get an ASO specialist audit: a strong/needs-work/weak posture, a field-by-field audit against the real character limits, prioritized findings, a keyword plan, and a rewritten metadata package re-verified against every limit client-side. Free instant prescan: limits, Apple keyword-field lint and target-keyword coverage in your browser. Derived from @sickn33/app-store-optimization (MIT).

Paste per-SKU demand history plus your scenario - lead times, MOQs, promotions, service targets, new items - and get the plan a senior demand planner would produce: an honest pattern read of each series, a forecast method that fits it, safety stock and reorder points with every assumption stated, order quantities that respect MOQs, plus risks, actions and open questions. The plan must show its safety-stock and reorder-point arithmetic, and your browser re-runs every formula it states and flags any that does not match the number printed beside it. The series scanner and safety-stock calculator run free in your browser. Derived from @affaan-m/inventory-demand-planning.

Paste a CSV or describe your data and what it should communicate. A free in-browser profiler types your columns, picks a heuristic chart and sketches it instantly; the AI then recommends the right chart form with exact encodings, the alternatives and why they lose, misleading-chart pitfalls, accessibility guidance, and runnable code for matplotlib, plotly, Vega-Lite, Recharts, D3 or ECharts. Critique mode reviews a chart you already built. Derived from @shubhamsaboo/visualization-expert.

Paste a hard decision - the situation, the options, the evidence, the constraints - and get it worked like a seasoned decision facilitator would: the decision framed in one line, a recommendation argued from what is on the page, the stance called honestly from Clear call to Reframe the decision, reversibility named on the one-way-door test, a weighted decision matrix computed from the page and your own scores, the factors that actually tip it, and the risks of the recommended path with mitigations. The weighted decision-matrix calculator runs free in your browser. Derived from @shubhamsaboo/decision-helper.

Paste a bug - symptoms, stack trace, the code involved, what changed recently - and get a systematic debugging plan: an honest read of reproducibility, root-cause hypotheses ranked by evidence, the cheapest experiments first, surgical instrumentation, conditional fix directions and open questions. The quick scanner runs free in your browser. Derived from @wshobson/debugging-strategies.

Paste the material behind a technical decision — rough notes, a design discussion, or an existing ADR draft — and get an architect's review: a ready / needs-work / not-ready verdict, a section-by-section audit, prioritized gap findings, and a complete, committable MADR-style Architecture Decision Record with drivers, options, consequences and a confirmation plan. A free client-side prescan flags single-option decisions, missing drawbacks, weasel words and reversibility gaps as you type. Derived from @wshobson/architecture-decision-records (MIT).

Paste your system brief — what you are building, the expected load, the constraints — and get a senior backend architect review: a readiness posture, the component plan with data ownership, prioritized findings with concrete design fixes, quick wins and focus areas. A free instant prescan spots the technologies and load numbers your brief names and flags the gaps a reviewable brief should not have. Derived from @sickn33/backend-architect (MIT).

Paste a GitHub Actions workflow and get a senior CI/CD engineer's review: a production-readiness posture, the workflow and job inventory, prioritized findings with corrected YAML fragments, quick wins and focus areas. A free instant prescan flags mutable action refs, missing permissions, script injection, secret leaks, missing timeouts and more. Derived from the @sickn33/github-workflow-automation skill.

Paste frontend source — components, stylesheets, theme files or a Tailwind config — and get the project design system reverse-engineered: six codification scores, every inconsistency quoted with its concrete fix, a consolidated token block built only from your own values, and a complete ready-to-commit DESIGN.md. Free instant token scan runs in your browser. Derived from @google-labs-code/extract-design-md.

Paste a data analysis you are about to share - prose, tables, SQL and its results, method notes - and get a structured audit: methodology review, a scan against seven named pitfalls each marked CLEAR/SUSPECT/FOUND with evidence, PASS/FAIL calculation spot-checks, the caveats that must travel with the numbers, and a verdict of Ready to share, Share with noted caveats or Needs revision. Revise and re-audit: the second pass is diffed against the first, showing what resolved, what is still open and what is new. The number scan and the revision checklist run free in your browser. Derived from @anthropics/data-validation.

Paste a table - CSV, TSV, a spreadsheet copy - and get a working dashboard: KPI cards, SVG charts, category filters and a sortable drill-down table. The AI maps your columns, picks the charts and writes insights grounded in your rows; a deterministic in-browser engine computes every number. Auto-build and SPEC editing are free with no sign-in. Derived from @anthropics/interactive-dashboard-builder.

Paste a CSV or TSV export and get a data profile with judgement: the grain and whether the key actually holds, quality issues ranked by severity with the offending values quoted, the dimensions and metrics worth using, patterns to check, and 3-5 specific analyses to run first. The mechanical profiler runs free in your browser.

Paste a shipment or product scenario - the good and what it is made of and does, the lane, the value, the Incoterm, the parties, any proposed HS code - and get an AI read of the ground a senior trade compliance specialist would cover before anyone files: a verdict, candidate HS classifications with the GRI reasoning shown, duty and program findings with the arithmetic on your own numbers, the documentation the entry needs, the red flags named plainly, and the open questions to resolve first. The code scanner and duty/RVC calculators run free in your browser. Derived from @affaan-m/customs-trade-compliance. Decision support only: not a binding customs ruling, not legal advice, and not a substitute for a licensed customs broker.

A first touch-typing game for five-to-seven-year-olds. Twenty short home-row-first levels introduce two keys at a time in giant capitals that match the letters printed on a real keyboard, with an on-screen keyboard that lights the next key and colour-codes every key by the finger that presses it, plus two hand diagrams. A flower grows for every correct key; each finished level hatches a collectible butterfly that is saved between sessions. A level picker opens at any time and replays any level she has already reached, and replaying only ever adds — it never lowers a star or takes back a butterfly. Pip the caterpillar reacts to every keypress and cheers at the end of a level. A wrong key is only ever a gentle nudge: no timers, no lives, no score that can fall, nothing to fail. All sound is synthesized with the Web Audio API and can be muted. Free, no sign-in, no ads, no personal data. Original artwork and an original curriculum, derived in spirit from the level pacing of classic children's typing tutors.

Paste an article and get a Generative Engine Optimization audit: whether Perplexity, ChatGPT, Claude and Gemini would retrieve it, trust it and cite it. Your browser does the deterministic half for free — it chunks the article the way a retriever does and flags every passage that cannot stand alone, finds every statistic and says which have no source, scores the five weighted retrieval factors, checks the thirteen-item GEO checklist, resolves your robots.txt per AI crawler, and generates the Article, Person and FAQPage JSON-LD. The metered pass writes the direct-answer block an engine can lift, the FAQ, a fix for every finding and a verdict on every claim. A derived work of the @sickn33/geo-fundamentals skill.

Paste a carrier decision - a scorecard dump, an RFP bid table, a rate or fuel-surcharge proposal, an onboarding candidate, a compliance alert - and get it worked like a veteran shipper-side transportation manager would: scenario, risk, the single next move argued from the numbers on the page, and every trap flagged. Free in-browser scorecard, fuel-surcharge and lane calculator. Derived from @affaan-m/carrier-relationship-management (ECC).

A demo storefront on the SkillSafe app platform. Browse a catalog of public-domain classics and record orders against your SkillSafe account. Nothing is charged and no book file, download or reading copy is delivered.

Paste your research notes — code excerpts, design decisions, benchmarks — and get a publish-ready technical blog post draft: the angle (problem, insight, surprise), a full markdown draft, a seven-point quality checklist, and an honest no-story-yet verdict when the material is thin. Free readiness scan runs in your browser. Derived from the @tldraw/write-tbp skill.

An independent tool, NOT affiliated with, endorsed by or connected to Nature, Nature Portfolio or Springer Nature: the name refers to the open project mumdark/nature-review-studio this app is derived from, not to the journal. Drop a manuscript (PDF, Word, LaTeX, Markdown, plain text, OpenDocument, RTF, EPUB) and get the desk check free in your browser: structure and section word counts, the figure and table inventory with caption presence, reference-format consistency, the citation cross-check in both directions, statistical-reporting gaps, and the ethics, data-availability and competing-interests statements. The metered pass adds the reviewer judgement — a 2–5 reviewer panel chosen from the manuscript's method fingerprint, an editor letter with a revision-level band, cross-review consensus and a revision task table — and every figure, table, section, reference and statistic it cites is checked back against your paper. The band is this tool's own assessment, never a journal's decision, and nothing it produces is a substitute for real peer review. A derived work of mumdark/nature-review-studio (12-axis concern taxonomy, reviewer-set mappings, strategy and status vocabularies); that repository publishes no licence file, so its taxonomy and vocabulary are used with credit and none of its corpus is redistributed, and it does not endorse this app.

Convert Word, Excel, PowerPoint, OpenDocument, EPUB, RTF, HTML, CSV and text-layer PDFs to clean GitHub-Flavored Markdown, entirely in the browser, with an optional metered AI pass that repairs heading hierarchy, undeclared PDF tables, merged headers, reading order and OCR noise, then reconciles its output against the parser's measured facts. Modelled on anydoc, the open-source (MIT) document parser by Firecrawl (github.com/firecrawl/anydoc); reimplemented in JavaScript for this runtime. Not affiliated with Firecrawl.

Drop a control population — a disbursement register, a journal listing, a payroll change log, an access-grant extract — and get a complete SOX 404 testing workpaper. The browser does the whole deterministic half free: it maps the columns whatever they are named, derives the sample size by attribute sampling with every adjustment stated as its own line, flags twelve risk attributes each reading only the fields it is about, selects a 100% high-value stratum plus risk-targeted items plus a seeded random or systematic sample that never counts an item twice, measures count, value and sub-period coverage, and evaluates deviations against a tolerable rate with a rule-of-three upper bound and an extrapolation against materiality. The metered pass adds the judgement: test steps for your control, evidence requests, a verdict on every flagged attribute, and the likelihood-and-magnitude argument behind the classification. A derived work of the sox-testing skill by @anthropics. Not audit or legal advice — every workpaper needs a qualified review.

Web performance, arithmetic first. Drop a Lighthouse JSON report, a PageSpeed Insights response, a HAR capture, a DevTools resource table or just your metric readings, and your browser does the whole measurable half for free: every Core Web Vital banded against the published thresholds, page weight by resource type in wire and decoded bytes, a performance budget derived line by line where your own target replaces the preset instead of stacking on it, a savings ledger in which each resource is claimed by exactly one rule so the totals cannot double count, repeat-visit cache savings kept in their own ledger for the same reason, twenty-three findings each reading only the fields it is about, and a generated Lighthouse budgets.json, priority snippet, three CSVs and a full report. The AI pass adds the judgement: which finding is actually holding the largest paint back, the fix written for your stack, the work ranked by impact against effort, and a verdict on every finding including the false positives. A derived work of the web-performance-optimization skill by @sickn33. Analysis of a capture you supply, not a measurement of your page.

A banner design studio in the browser. The free lane is a real engine: ten platform formats at exact pixel dimensions, eight art-direction styles as seeded procedural SVG backgrounds, safe zones and adaptive type fitting, a design-rule lint that measures 4.5:1 contrast, the action-verb CTA rule and the 20% ad text ratio, and SVG + exact-dimension PNG export. The AI pass turns a brief into three distinct art directions — palette, copy, style, layout, seeds — rendered by the same engine and checked by the same lint. A derived work of the banner-design skill by @nextlevelbuilder (ckm-3abanner-design, MIT).

Turn any web page into an importable Obsidian Web Clipper template. The free half is a real engine: paste the page's HTML and the browser extracts every meta tag, schema.org JSON-LD path and live CSS selector, generates a grounded skeleton template, validates any template against the Clipper import schema AND against the page, and previews the exact note it would clip. The AI pass shapes the template around your intent - and the same validator re-checks every selector, meta key and schema path it used, in public. A derived work of @sickn33/obsidian-clipper-template-creator (sickn33/antigravity-awesome-skills). Not affiliated with Obsidian.

Turn a sample API response into the response_semantics block and Adaptive Card templates that make Microsoft 365 Copilot render your plugin data as cards. The free half is a real engine: paste the JSON and it measures every field with type, sample and presence count, generates a grounded skeleton bundle, validates any bundle against the card rules AND against the sample — a binding that resolves on no item is named — and previews the exact card each item would produce. The AI pass shapes the template around your intent, and the same validator re-checks every binding it used, in public. A derived work of @github/mcp-create-adaptive-cards (github/awesome-copilot).

Turn a command's --help or man output into a publish-grade tldr page. The free half is a real engine in the browser: a help-text parser that extracts every option and subcommand, a skeleton-page generator, a format lint measuring the tldr-pages rules (title shape, description block, More information line, 5-8 examples, the {{[-s|--long]}} placeholder conventions), a styled preview and .md export. The AI pass writes the examples people actually reach for, grounded in the pasted help text and re-checked by the same lint - every flag it uses that the help text never documented is printed by name. A derived work of @github/create-tldr-page (MIT, github/awesome-copilot).

Paste a rough bug report or feature idea and get a ready-to-file GitHub issue: a clean sentence-case title, the right issue type, a structured body, label suggestions, a readback you can correct and re-run, open questions and an honest confidence line. One click opens it prefilled in your own repo - no OAuth, no token, no repository access. The title linter, the type heuristic and the reply-to-reporter draft run free in your browser. Derived from @tldraw/write-issue.

An interactive 3D human anatomy atlas with a study desk that marks your own recitation. Explore nine medically detailed organ specimens with hotspots, cross-section and layer tools, then write what you know and have it graded against a six-criterion rubric — your words quoted back, misconceptions corrected, and flashcards aimed at the gaps. Derived from the open-source atlas at github.com/thebuggeddev/anatomy.

A private file manager for your personal cloud storage — sign in with your SkillSafe account to upload files and folders, organize, preview, star, share links, and restore from trash.

Draw causal-loop models, connect positive and negative relationships, and run animated feedback simulations entirely in your browser. Source: https://github.com/ncase/loopy

Paste your git log, merged PR list or raw change notes and get a polished release-notes article: featured highlights, a migration guide for every breaking change, categorized changes with contributor credits, and the complete markdown ready to publish. An instant categorization scan runs free in your browser. Editorial method adapted from @tldraw/write-release-notes.

Paste a git diff, commits, and your notes - get a reviewer-first pull request title and description in Conventional Commits style, with a client-side diff stats breakdown and title linter. Derived from @tldraw/write-pr.

Paste your marketing copy and get it edited through seven focused passes - clarity, voice, so-what, proof, specificity, emotion and risk. Every finding quotes the exact line it is about; the edited version is ready to paste back; three expert personas score the result. Free instant word-level checks run in your browser before you sign in. Methodology adapted from the open-source Seven Sweeps framework (@coreyhaines31/copy-editing).

Guide colorful frogs onto their lilypads by writing CSS flexbox rules across 24 interactive levels. Source: https://github.com/thomaspark/flexboxfroggy

Play through the game theory of cooperation, then experiment with strategies, incentives, mistakes, and evolving populations. Source: https://github.com/ncase/trust

Race to recreate mathematical formulas with LaTeX in three minutes, or practice at your own pace in Zen Mode. Source: https://github.com/akshayravikumar/TeXnique

Score how well your resume matches a job posting from LinkedIn, Indeed, Greenhouse, Lever, Workday and more — paste the URL or the text and we strip the page clutter automatically. See the keyword and skill gaps hurting your chances and get concrete, paste-ready rewrites, with ATS tips tuned to the source platform. Powered by a SkillSafe agent.

Place one queen in every row, column, and colored region without letting queens touch diagonally. Hundreds of local puzzles with undo and saved progress. Source: https://github.com/samimsu/queens-game

Crack a hidden gesture lock by drawing patterns and interpreting Mastermind-style clues. Three modes and difficulties, built for mouse and touch. Source: https://github.com/maxwellito/breaklock

Run, jump, collect every piece of gold, and clear roaming monsters in a compact canvas platform adventure with keyboard and touch controls. Source: https://github.com/jakesgordon/javascript-tiny-platformer

Match animal card edges in a colorful local turn-based puzzle for one to four players. Drag, click, touch, or use the keyboard. Source: https://github.com/chrisheninger/matchimals.fun

Guide photons through mirrors, detectors, superposition, and entanglement in a puzzle game powered by real quantum mechanics. Source: https://github.com/stared/quantum-game

Slide the Octocat across a retro LCD screen and commit shots to squash descending bugs. Keyboard, mouse, and touch play. Source: https://github.com/balajmarius/commit4

Build hosted mini-apps by chatting — describe an app and the assistant deploys it to {slug}.skillsafe.ai.

Build and save a sun-bleached Mediterranean village in this isometric creative toy. Place terrain, plants, props, water, and buildings with mouse or touch. Source: https://github.com/boona13/mykonos-island-voxels

Free passport, visa & ID photo maker. Crop to official size with head guides, then download a print-ready 4x6/A4 sheet for CVS, Walgreens, or any pharmacy kiosk. Runs fully in your browser - no upload, no watermark.

Time each drop, stack swinging floors, and build the tallest tower you can in this one-button canvas game. Click, tap, or use Space. Source: https://github.com/iamkun/tower_game

Steer a flexible chain of balls, dodge hazards, collect power-ups, and survive each timed wave in this pointer-and-touch arcade game. Source: https://github.com/JIEJOE-Visual/snakeball

Drive a neon retro tank, blast hostile armor, collect ammo, and cross every pad to reach the next level. Keyboard and touch play. Source: https://github.com/brianrisk/SYNTHBLAST-threejs-game

Navigate a field of hidden black holes using proximity clues in this polished, accessible puzzle game. Keyboard, mouse, and touch play. Source: https://github.com/GoogleChromeLabs/proxx

Rotate a six-sided core, catch falling blocks, and match colors before the stack reaches the edge. Keyboard and touch play. Source: https://github.com/Hextris/hextris

Clear twelve colorful mazes, dodge smart pursuers, and turn the chase around with power pellets. Keyboard and touch play. Source: https://github.com/mumuy/pacman

Wake beside a fading fire and build a settlement in this minimalist survival text adventure. Local saves, keyboard, and touch play. Source: https://github.com/doublespeakgames/adarkroom

Slide and merge matching number tiles to build 2048 in the original open-source browser puzzle. Supports keyboard and touch. Source: https://github.com/gabrielecirulli/2048

A polished Connect Four game with animated chip drops. Play against a minimax AI, a local friend, or watch two AIs compete. Source: https://github.com/kenrick95/c4

Race a colorful truck around a polished 3D circuit in your browser. Source: https://github.com/mrdoob/Starter-Kit-Racing

Play a realistic browser-based 3D billiards and pool physics simulator. Source: https://github.com/tailuge/billiards

Open, edit, analyze, and build Excel workbooks with plain English - formulas, formatting, charts, and full report templates in a live spreadsheet grid. The file stays in your browser; only the cells being discussed are sent to the AI model.

Create and edit Word (.docx) documents in your browser with an AI assistant. Word Online-style editor with ribbon formatting, tables, images and lists; the file itself never leaves your browser — the AI edits the document content on request.

Create and edit PowerPoint (.pptx) presentations in your browser with an AI assistant. Slide editor with thumbnails, text formatting, pictures and tables; the AI drafts decks, rewrites and reorders slides on request. The file itself never leaves your browser.

Explore, mine, build, and battle in a procedural browser-based third-person voxel world. Source: https://github.com/hexianWeb/Third-Person-MC

A compact browser-based WebGL action shooter created for JS13K 2018. Source: https://github.com/phoboslab/underrun

Learn Kubernetes through an interactive 3D cluster simulation with campaign, chaos, sandbox, and challenges. Source: https://github.com/rohitg00/k8sgames

Learn Vim by playing short, focused browser lessons with XP, combos, achievements, and local progress. Source: https://github.com/renzorlive/vimmaster

A fast-paced open-source HTML5 space shooter with momentum-based movement. Source: https://github.com/scottrippey/xquestjs

A browser-native tactical FPS with procedural rendering, physics, AI, and audio. Source: https://github.com/Leonxlnx/claude-of-duty

A complete browser-based first-person shooter. Source: https://github.com/StarKnightt/operation-ironhold

Edit any PowerPoint with plain English - retitle, reword, restructure, reorder, and reformat slides with a live preview, then download the same deck with your edits applied. The file stays in your browser; only the slides being edited are sent to the AI model.

Private browser photo editor with a real on-device portrait AI cutout model, mouse-drag crop and cutout placement, film looks and offline support. Zero uploads.

Open and read PowerPoint (.pptx) presentations right in your browser. Completely free - no sign-in, no upload, no usage billing. High-fidelity slides, thumbnails, and a presenter mode; files never leave your device.

Free, private static QR codes with rich content types, custom styling, logos, and print-ready exports.

Translate text to International Morse Code and back. Play it as sound, flash it as a fullscreen light, export a flash-and-beep video for embedding, or decode Morse live from your microphone or camera — free, entirely in your browser.

Show your public IP, network edge details, and full browser & device information. All client-side; nothing stored.

Stress-test decisions across 1,000 plausible futures.

A clean, keyboard-friendly calculator.

Ask anything. A real human, pretending to be an AI, answers it in 60 seconds. No model was used.

A satirical fake food-delivery simulator: order food, pay nothing, receive nothing. Entirely client-side.