AI Agent Skills Marketplace

Automated test generation with edge case analysis and framework-native syntax for TS, Python, Go, and Rust.

Three-pass automated code review that catches error handling gaps, structural issues, and naming problems — then auto-fixes everything before code reaches the user.

Idiomatic code translation between Python, TypeScript, and Go that preserves logic and adapts language-specific patterns.

Automatically transform JSON files or raw strings into production-ready TypeScript interfaces or Python dataclasses.

Transform brittle prompt chains into robust, artifact-driven DAG workflows with hard gates and explicit traces.

High-performance browser-based text layout and measurement for virtualization, canvas, and layout-heavy applications.

lsp-guided-coding

by Roy Yuen

$5

or 25 cr

Supercharge your agent with semantic code intelligence for safer refactors, precise navigation, and zero-error edits.

Use this skill when the user is facing a bug in an Angular application, including issues with components, services, RxJS, HTTP calls, tests, or unexpected behavior.

Webapp Tester

by JustHandled Labs

$15

or 75 cr

Run real Playwright E2E tests on your web app: login, checkout, and form flows across desktop and mobile viewports, with screenshots, traces, and console logs captured on every failure. Catches broken flows and UI regressions before release, and tells you the likely fix, not just that something broke.

Codebase Graph

by JustHandled Labs

$25

or 125 cr

Map any repo into an interactive D3 dependency graph plus a Markdown onboarding guide: entry points, module relationships, circular dependencies, and dead-code candidates, with refactor suggestions. Parses TypeScript, Python, Java, Go, and Rust imports, exports, and calls. Self-contained HTML, no source changes.

🧪 Test Quality Auditor

by JustHandled Labs

$15

or 75 cr

Find the unit tests that pass without testing anything. Flags tests with no assertions, trivial existence-only checks (toBeDefined, assertIsNotNone), tests that assert the exact value they just mocked, snapshot-only tests, tautological assertions (expect(true).toBe(true)), empty placeholders, and over-mocked tests with more setup than assertions. Works on Jest/Vitest and pytest/unittest.

Scaffold a complete, production-ready auth and multi-tenant foundation — sessions, OAuth/SSO, role-based access control, organizations, teams, invitations, and row-level data isolation — wired to your app and database.

Canonical Next.js bridge for secure, real-time communication between browser UIs and local agent gateways.

Hybrid GLB/Procedural character system for Three.js with Draco compression, asset caching, and a selection UI.

playwright-pro

by Matthew King

$5

or 25 cr

Architect, scaffold, and audit enterprise-grade Playwright test suites with professional CI and auth patterns.

Scaffold a complete, production-ready transactional email system — verification, password reset, receipts, and notifications — with deliverability hardening, retries, idempotency, and a suppression list.

Vercel Build Log Doctor

by JustHandled Labs

$15

or 75 cr

Figure out why your Vercel build or deploy failed without scrolling the whole log. Reads the build log plus your package manifest and framework config to pinpoint missing modules, Node and package-manager mismatches, missing env vars, monorepo root mistakes, and serverless/edge runtime errors, with the likely cause and a fix for each.

MCP Server Starter & Safety Kit

by JustHandled Labs

$29

or 145 cr

Scaffold and audit secure MCP servers with input schemas, confirmation gates, and safety-first tool definitions.

🧭 Doc Drift Detector

by JustHandled Labs

$13

or 65 cr

Catch documentation that drifted from your code. Flags functions and methods named in your docs that are gone from the source, CLI flags documented but missing from the arg parser, env vars the docs mention but the code never reads, example imports of modules that no longer exist, and npm scripts or Make targets your docs reference but the project does not define. Cross-references your README and docs against Python and JS/TS source.

🗺️ Change Impact Mapper

by JustHandled Labs

$13

or 65 cr

Map the blast radius of a code change before you run the whole suite. For the files and functions you changed, it lists what imports or calls them, which tests cover them, flags any change with no covering test, and warns when a file has a lot of dependents. It tells an agent what its edit might break instead of making it guess. Resolves Python and JavaScript/TypeScript.

An expert architect for building scalable, high-performance React applications with TypeScript and modern best practices.

Production-ready Discord Embedded App SDK OAuth handshake for Node/Python backends and TypeScript frontends.

⚔️ Guardrail Fallback Linter

by JustHandled Labs

$12

or 60 cr

Find the LLM integration code that breaks when a model blocks a response or falls back to a different model. Flags calls with no try/except or refusal branch, responses used or parsed with no guard for a blocked or empty answer, and hardcoded model ids with no fallback handling. Built for the Fable 5 era, where a high-risk call is blocked and silently falls back to Opus 4.8.

codegraph-ast-grep

by servrox

Free

Supercharge repo exploration and refactoring with semantic call-graph tracing and structural AST pattern matching.