1,418 free skills
API Design skills
Skills for designing APIs — REST conventions, GraphQL schema design, versioning strategy, rate limiting, and OpenAPI contracts.
Sourced from real, public repositories — synced daily, never invented.
1,418 free skills
Skills for designing APIs — REST conventions, GraphQL schema design, versioning strategy, rate limiting, and OpenAPI contracts.
Sourced from real, public repositories — synced daily, never invented.
15 tools across six categories
13 of them never send your data anywhere
Free · No signup · No trial clock
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typescript-development
hiromaily/go-crypto-wallet
TypeScript/JavaScript development workflow for apps/ directory. Use when modifying TypeScript code in xrpl-grpc-server or JavaScript in eth-contracts.
stripe
mikkelkrogsholm/dev-skills
Stripe — payment processing platform with APIs for accepting payments, managing subscriptions, handling payouts, and preventing fraud. Use when building with Stripe or asking about its APIs, configuration, patterns, webhooks, or integration. Fetch live documentation for up-to-date details.
nextjs-stripe-integration
microck/ordinary-claude-skills
Add Stripe payment processing to Next.js projects. Implement checkout sessions, payment handling, subscriptions, webhooks, and customer management. Use when adding Stripe to a Next.js project, building payment flows, implementing subscriptions, or integrating payment processing.
translator
zoom/skills
Zoom AI Services Translator for synchronous text translation and asynchronous batch file translation. Use for plain-text translation, one-target-language jobs, S3 text archives, Build-platform JWT auth, and webhook-driven translation pipelines.
summarizer
zoom/skills
Zoom AI Services Summarizer for synchronous transcript summarization and asynchronous batch summary jobs. Use for conversation recaps, action items, detailed summaries, Build-platform JWT auth, S3 transcript archives, and webhook-driven summary pipelines.
constructive-meta-forms
constructive-io/constructive-skills
Use the _meta GraphQL endpoint on any Constructive app-public DB to introspect table schema at runtime and render fully dynamic CRUD forms with zero static field configuration. Covers DynamicFormCard (create/edit/delete), locked FK pre-fill from context (defaultValues + defaultValueLabels), and the O2M/M2M related-record pattern. Use when building create/edit/delete UI for any Constructive-provisioned table.
extract-openapi-from-code
speakeasy-api/agent-skills
Use when extracting or generating an OpenAPI spec from existing API code. Triggers on "extract OpenAPI", "code first", "generate spec from code", "FastAPI OpenAPI", "Spring Boot OpenAPI", "NestJS swagger", "Django OpenAPI", "Flask OpenAPI", "Rails swagger", "Laravel OpenAPI", "existing API code
atlas-crew-tasks
nickcrew/claude-cortex
Use when filing, updating, sequencing, or querying tasks in any atlas-crew repo (Facet + the Atlas Crew Security repos: Apparatus, Chimera, Crucible, Synapse, Bridge). These repos track work in GitHub Issues on Projects v2 boards, NOT backlog.md. Covers the two boards, the Type/Area/Status field model, cross-repo Initiative grouping, gh seq execution ordering, and the non-obvious gh/GraphQL mechanics for setting issue types and project fields. Trigger on: file an issue, create a task, set priority/type/area/status, add to board, what should I work on next, execution order, sequencing, blocked-by, milestone, where does this task go.
openapi-to-typescript
cachemoney/agent-toolkit
Converts OpenAPI 3.0 JSON/YAML to TypeScript interfaces and type guards. This skill should be used when the user asks to generate types from OpenAPI, convert schema to TS, create API interfaces, or generate TypeScript types from an API specification.
payment-integration
the1studio/theone-training-skills
Implement payment integrations with SePay (Vietnamese payment gateway with VietQR, bank transfers, cards) and Polar (global SaaS monetization platform with subscriptions, usage-based billing, automated benefits). Use when integrating payment processing, implementing checkout flows, managing subscriptions, handling webhooks, processing bank transfers, generating QR codes, automating benefit delivery, or building billing systems. Supports authentication (API keys, OAuth2), product management, customer portals, tax compliance (Polar as MoR), and comprehensive SDK integrations (Node.js, PHP, Python, Go, Laravel, Next.js).
stripe-checkout
canatufkansu/claude-skills
Stripe Checkout integration for programme purchases with Server Actions, webhook signature verification, and success/cancel flows. Use when implementing payments, creating checkout sessions, handling webhooks, or setting up purchase flows.
graphql-api-development
manutej/crush-mcp-server
Comprehensive guide for building GraphQL APIs including schema design, queries, mutations, subscriptions, resolvers, type system, error handling, authentication, authorization, caching strategies, and production best practices
graphql-schema-design
chillicream/agent-skills
GraphQL schema design and review. Use when designing new GraphQL schema changes (types, mutations, queries, connections, enums, errors), reviewing schema diffs, planning schema evolution, or auditing nullability and naming. Triggers on 'graphql schema design', 'design a mutation', 'design a query', 'design a type', 'new type', 'new mutation', 'review schema', 'review schema diff', 'schema review', 'schema evolution', 'audit the schema', '/graphql-schema-design'.
fix-openapi-spec
specmatic/skills
Use when asked to identify and fix errors in an OpenAPI specification that are preventing it from running as mock or test
monitor-openapi
janwilmake/parallel-coding-skills
Monitor API integration of Parallel. Use when building applications with Parallel Monitor API.
x-twitter-scraper
github/awesome-copilot
Build GitHub Copilot workflows with Xquik X API SDKs, REST endpoints, hosted Apify Actor runs, MCP tools, TweetClaw OpenClaw plugin installs, signed webhooks, tweet search, user lookup, follower exports, media actions, and agent automation.
n8n-expression-syntax
echoleesong/claude-skills-plugin
Validate n8n expression syntax and fix common errors. Use when writing n8n expressions, using {{}} syntax, accessing $json/$node variables, troubleshooting expression errors, or working with webhook data in workflows.
building-django-apps
doanchienthangdev/omgkit
Builds enterprise Django applications with DRF, ORM optimization, async views, and Celery tasks. Use when creating Python web apps, REST APIs, or full-stack Django projects.
go-openapi
eduardo-sl/go-agent-skills
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mcp-openapi-proxy
rendis/mcp-openapi-proxy
Use when connecting a REST API to an MCP client, setting up mcp-openapi-proxy, exposing an OpenAPI-backed navigator/executor MCP server, or authenticating with OIDC/static tokens for API proxying.
debank
termix-official/cryptoclaw
Query DeBank OpenAPI for wallet portfolios, token holdings, DeFi positions, and transaction history.
jupyter-link
rarce/jupyter-link
Execute code in running Jupyter kernels and persist outputs to the target notebook via Jupyter Server REST API and kernel WebSocket channels. Implements session discovery, cell insert/update, execution, and output mapping (nbformat v4), with optional real-time collaboration (RTC / Y.Doc). Use when the user wants to run code in a Jupyter notebook, drive a live kernel, read or edit notebook cells, or collaborate with JupyterLab in real time.
write-script-graphql
windmill-labs/windmill-cli-docs
MUST use when writing GraphQL queries.
alchemy-webhooks
hookdeck/webhook-skills
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asana-webhooks
hookdeck/webhook-skills
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ashby-webhooks
hookdeck/webhook-skills
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grpc-patterns
vibeeval/vibecosystem
Protobuf schema design, streaming patterns, interceptor chains, deadline propagation, and error handling for gRPC services.
missing-rate-limiting-anti-pattern
igbuend/grimbard
Security anti-pattern for missing rate limiting (CWE-770). Use when generating or reviewing API endpoints, authentication systems, or public-facing services. Detects absence of request throttling enabling brute force, credential stuffing, and DoS attacks.
cms-webhooks
contentstack/contentstack-agent-skills
Advise developers on configuring and consuming Contentstack webhooks for real-time event notifications. Cover event channels, payload structure, signature verification, retry behavior, release-triggered webhook storms, and reliable receiver design.
express
full-statck-skills/nodejs-skills
Provides comprehensive guidance for Express.js framework including routing, middleware, request handling, templating, and API development. Use when the user asks about Express, needs to create Express applications, set up routes, implement middleware, or build REST APIs.
rest-api-design
bsene/skills
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api-designer
fulfon/lusena-dawn
Use when designing REST or GraphQL APIs, creating OpenAPI specifications, or planning API architecture. Invoke for resource modeling, versioning strategies, pagination patterns, error handling standards. Keywords: API design, REST, OpenAPI, GraphQL, API architecture.
api-designer
thesaifalitai/claude-setup
Use when designing REST or GraphQL APIs, creating OpenAPI specifications, or planning API architecture. Invoke for resource modeling, versioning strategies, pagination patterns, error handling standards.
api-versioning-patterns
vibeeval/vibecosystem
API versioning strategies, breaking change detection, deprecation lifecycle, and migration guides
limit-request-rate-pattern
igbuend/grimbard
Security pattern for implementing rate limiting and throttling. Use when protecting against brute-force attacks, DoS/DDoS mitigation, preventing resource exhaustion, or limiting API abuse. Addresses "Entity absorbs excessive resources" problem.
webhooks
nirholas/xactions
Create, manage, and test webhooks in XActions. Get notified via HTTP when automation jobs complete, followers change, or operations finish. Use when users want to integrate XActions events into external systems.
airwallex-webhooks
hookdeck/webhook-skills
>
akeneo-webhooks
hookdeck/webhook-skills
>
alipay-webhooks
hookdeck/webhook-skills
>
api-specs-openapi
agents-inc/skills
OpenAPI 3.1 specification, schema design, code generation
moralis-openapi-skill
holon-run/uxc
Operate Moralis EVM wallet and token reads through UXC with a curated OpenAPI schema, API-key auth, and wallet-intelligence guardrails.
graphql-builder
inbharatai/claude-skills
Design and implement GraphQL schemas — types, queries, mutations, subscriptions, resolvers, and federation.
defillama-openapi-skill
holon-run/uxc
Operate DefiLlama public analytics APIs through UXC with a curated OpenAPI schema and read-first guardrails.
notion-openapi-skill
holon-run/uxc
Operate Notion Public API through UXC with a curated OpenAPI schema for search, block traversal, page reads, content writes, and data source/database inspection. Use when tasks need recursive reads or structured writes that Notion MCP does not expose directly.
chainbase-openapi-skill
holon-run/uxc
Operate Chainbase indexed wallet and token reads through UXC with a curated OpenAPI schema, API-key auth, and read-first guardrails.
payment-integration
itsimonfredlingjack/codex-dev-plugin
Integrate Stripe, PayPal, and payment processors. Handles checkout flows, subscriptions, webhooks, and PCI compliance. Use PROACTIVELY when implementing payments, billing, or subscription features.
coingecko-openapi-skill
holon-run/uxc
Operate CoinGecko and GeckoTerminal market data APIs through UXC with a curated OpenAPI schema, API-key auth, and read-first guardrails.
dj-api
ashbrener/opinionated-django
Structure Django Ninja API endpoints, routers, schemas, and exception handling. Complements dj-architecture Layer 7 with concrete conventions for router configuration, schema naming, status codes, error handling, and OpenAPI tags. Use when creating or modifying API endpoints, designing request/response shapes, or wiring a new resource into the NinjaAPI mount.
kraken-rate-limits
krakenfx/kraken-cli
Understand Kraken API rate limits and adapt agent behavior when limits are hit.
webhook-debug
webhookrelay/skills
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nre
nvidia/nurec-skills
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sop-api-development
dnyoussef/ai-chrome-extension
Complete REST API development workflow coordinating backend, database, testing, documentation, and DevOps agents. 2-week timeline with TDD approach.
godot-api
cnqdztp/godot-skills
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omni-query
exploreomni/omni-cursor-plugin
Run queries against Omni Analytics' semantic layer using the REST API, interpret results, and chain queries for multi-step analysis. Use this skill whenever someone wants to query data through Omni, run a report, get metrics, pull numbers, analyze data, ask "how many", "what's the trend", "show me the data", retrieve dashboard query results, or perform any data retrieval through Omni's query engine. Also use when someone wants to programmatically extract data from an existing Omni dashboard or workbook.
firebase-data-connect
firebase/firebase-tools
Firebase Data Connect integration for GraphQL-based data access with PostgreSQL. Use when building GraphQL schemas, queries, mutations, or integrating Firebase Data Connect with Angular applications. Supports type-safe generated SDKs, real-time subscriptions, and server-side data validation.
simulations
vapiai/skills
Design, create, run, monitor, and maintain Vapi Simulations for assistants and squads. Use for simulation personalities, scenarios, structured-output success criteria, simulations, suites, chat or voice runs, tool mocks, target variables, lifecycle webhooks, regression coverage, CI quality gates, run-result analysis, and simulation API validation errors. Do not use for fixed-turn mock-conversation Evals unless the user is deciding between Evals and Simulations.
redis-js
upstash/upstash-redis
Work with the Upstash Redis JavaScript/TypeScript SDK for serverless Redis operations. Use for caching, session storage, rate limiting, leaderboards, full-text search (querying, filtering, aggregating with @upstash/redis search extension), and all Redis data structures. Supports automatic serialization/deserialization of JavaScript types. Search also available via @upstash/search-redis and @upstash/search-ioredis adapters for TCP clients.
hunt-supabase
uphiago/recon-skills
Hunt Supabase exploitation — Supabase anon key discovery in JS bundles, REST API table enumeration with anon key, Row Level Security (RLS) bypass via missing organization_id check, RPC function abuse returning cross-organization data, Storage bucket listing, Auth signUp/signIn with anon key, multi-tenant enumeration via WHOIS, bucket file upload/download without auth. Built from field observation of Lovable.dev + Supabase stack on rapidly-built platforms where RLS policies are consistently misconfigured. Use when a JS bundle, .env, or APK reveals a Supabase URL (project.supabase.co) and anon key (eyJ...).
graphql-architect
davila7/claude-code-templates
Master modern GraphQL with federation, performance optimization, and enterprise security. Build scalable schemas, implement advanced caching, and design real-time systems.
graphql-architect
itsimonfredlingjack/codex-dev-plugin
Master modern GraphQL with federation, performance optimization, and enterprise security. Build scalable schemas, implement advanced caching, and design real-time systems. Use PROACTIVELY for GraphQL architecture or performance optimization.