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
SEE THE DIRECTORY
performing-api-rate-limiting-bypass
mukul975/anthropic-cybersecurity-skills
Tests API rate limiting for bypass vulnerabilities using Python (requests/aiohttp)
spring-boot-expert
personamanagmentlayer/pcl
Expert-level Spring Boot, Spring Framework, REST APIs, and microservices development
elevenlabs-webhooks
hookdeck/webhook-skills
>
twilio-webhook-architecture
twilio/ai
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genomic-intelligence
k-dense-ai/scientific-agent-skills
Predict regulatory features, gene structure, and expression directly from DNA sequence using Genomic Intelligence's hosted transformer DNA language models — no local GPU or model weights. Six tasks over a REST API and a hosted MCP server (keyless public demo): promoter regions, splice donor/acceptor sites, enhancer activity, chromatin state, sequence-to-expression (log TPM), and de-novo gene annotation, plus a composite find-genes-then-predict-expression workflow. Use when the user has a gene symbol, a genomic region, or a DNA/FASTA sequence and wants any of these predictions, mentions Genomic Intelligence, genomicintelligence.ai, api.genomicintelligence.ai, or mcp.genomicintelligence.ai.
webhook-push
fanchou/webhook-push
Unified webhook messaging for WeCom, DingTalk, and Feishu platforms. Send notifications to enterprise communication platforms with a single interface.
rate-limiting
harperaa/secure-claude-skills
Implement rate limiting to prevent brute force attacks, spam, and resource abuse. Use this skill when you need to protect endpoints from automated attacks, prevent API abuse, limit request frequency, or control infrastructure costs. Triggers include "rate limiting", "rate limit", "brute force", "prevent spam", "API abuse", "resource exhaustion", "DoS", "withRateLimit", "too many requests", "429 error".
wordpress-plugin-development
sickn33/agentic-awesome-skills
WordPress plugin development workflow covering plugin architecture, hooks, admin interfaces, REST API, security best practices, and WordPress 7.0 features: Real-Time Collaboration, AI Connectors, Abilities API, DataViews, and PHP-only blocks.
cloud-api-integration
martinholovsky/claude-skills-generator
Expert skill for integrating cloud AI APIs (Claude, GPT-4, Gemini). Covers secure API key management, prompt injection prevention, rate limiting, cost optimization, and protection against data exfiltration attacks.
linkfox-xiyou-dongcha
linkfox-ai/linkfox-skills
西柚找词（西柚洞察）亚马逊 ASIN 与关键词分析，经 LinkFox 网关转发西柚 OpenAPI。覆盖 ASIN 流量得分、反查关键词、词排名/流量趋势、BSR、ABA 周趋势、关键词竞争度与建议竞价等 17 个接口，支持 US/UK/DE 等 13 个站点。当用户提到西柚找词、西柚洞察、Xiyou、ASIN 反查关键词、关键词分析、ABA 周搜索量、流量得分、词排名趋势、xiyou keyword research, ASIN traffic score, reverse ASIN lookup, search term analysis 时触发。即使用户未写「西柚」，只要需求是通过西柚找词查亚马逊 ASIN/关键词流量与排名数据，也应触发。使用前须配置 LINKFOXAGENT_API_KEY 以及环境变量 XIYOU_CLIENT_ID、XIYOU_CLIENT_SECRET。
api-design
citypaul/.dotfiles
Stable consumer-facing API and interface design patterns. Use when designing REST endpoints, cross-team boundaries, or any externally consumed or versioned service contract. Covers contract-first development, error semantics (RFC 9457), REST conventions, pagination, idempotency, rate limiting, and backward compatibility. For an in-process feature or module's coherent responsibility and interface depth, use codebase-design. For TypeScript type patterns and trust-boundary validation, see typescript-strict.
bot-developer
curiositech/some_claude_skills
Expert bot developer specializing in Discord, Telegram, Slack automation with deep knowledge of rate limiting, state machines, event sourcing, moderation systems, and conversational AI integration.
clerk-webhooks
hookdeck/webhook-skills
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woocommerce-webhooks
hookdeck/webhook-skills
>
databricks-python-sdk
databricks-solutions/ai-dev-kit
Databricks development guidance including Python SDK, Databricks Connect, CLI, and REST API. Use when working with databricks-sdk, databricks-connect, or Databricks APIs.
building-vulnerability-dashboard-with-defectdojo
mukul975/anthropic-cybersecurity-skills
Deploy DefectDojo as a centralized vulnerability management dashboard that ingests findings from 200+ security scanners, deduplicates results, tracks remediation metrics, and integrates with CI/CD, Jira ticketing, and Slack notifications via its REST API. Use when consolidating scanner output into one dashboard or automating vulnerability ticketing and executive reporting.
403-frameworks-quarkus-validation
jabrena/plinth
Use when you need to design, review, or improve validation in Quarkus applications — including Bean Validation on JAX-RS resources, @Valid on parameters and CDI beans, constraint groups, @ConfigMapping validation, custom constraints, nested DTO validation, and ExceptionMapper-based error mapping. This should trigger for requests such as Add validation support in Quarkus; Review Quarkus validation rules; Improve request validation in Quarkus REST APIs; Add custom validation constraints in Quarkus; Validate Quarkus @ConfigMapping properties. Part of Plinth Toolkit
nocodb
nocodb/agent-skills
Access and manage NocoDB databases via REST APIs. Free plans support bases, tables, fields, records, links, filters, sorts, and attachments. Enterprise plans add workspaces, views, scripts, teams, and collaboration features.
vercel-webhooks
hookdeck/webhook-skills
>
api-endpoint-builder
sickn33/agentic-awesome-skills
Builds production-ready REST API endpoints with validation, error handling, authentication, and documentation. Follows best practices for security and scalability.
rest-api-design
curiositech/some_claude_skills
Design REST API endpoints with Zod validation and OpenAPI documentation. Use when creating new API routes, validating request/response schemas, or updating API documentation. Activates for
api-design-patterns
rohitg00/awesome-claude-code-toolkit
REST API design with resource naming, pagination, versioning, and OpenAPI spec generation
postmark-webhooks
hookdeck/webhook-skills
>
webhook-transforms
garrytan/gbrain
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api-design-expert
shipshitdev/skills
Expert in RESTful API design, OpenAPI/Swagger documentation, versioning, error handling, and API best practices for NestJS applications. Use when designing API endpoints, building RESTful APIs, writing OpenAPI/Swagger docs, implementing versioning, or designing error responses and DTOs.
azure-devops
markpitt/claude-skills
Comprehensive skill for working with Azure DevOps REST API across all services including Boards (work items, queries, backlogs), Repos (Git, pull requests, commits), Pipelines (builds, releases, deployments), Test Plans, Artifacts, organizations, projects, security, extensions, and more. Use when implementing Azure DevOps integrations, automating DevOps workflows, or building applications that interact with Azure DevOps services.
openai-webhooks
hookdeck/webhook-skills
>
deepgram-webhooks
hookdeck/webhook-skills
>
cursor-webhooks
hookdeck/webhook-skills
>
graphql-schema-designer
patricio0312rev/skills
Designs GraphQL schemas with types, queries, mutations, subscriptions, resolvers, and DataLoader patterns for efficient data fetching. Use when users request "GraphQL API", "schema design", "GraphQL setup", "resolvers", or "Apollo Server".
docyrus-platform
docyrus/agent-skills
Architecture and building-blocks reference for the Docyrus platform — what the platform is made of (apps, data sources, fields, enumerations, custom queries, automations) and how the pieces fit together. Use when you need conceptual context about how Docyrus works, what its building blocks and capabilities are, or to decide which dedicated skill to use for a task. This is the conceptual map and router; hands-on how-to lives in the dedicated design / CLI / API skills it points to (data sources, automations, agents, AI tools, templates, webforms, ACL, querying, the CLI, and the REST API).
503-frameworks-micronaut-validation
jabrena/plinth
Use when you need to design, review, or improve validation in Micronaut applications — including Bean Validation on @Controller methods, @Body @Valid, query/path parameter validation, @ConfigurationProperties validation, custom constraints, nested DTO validation, and ExceptionHandler mapping for constraint violations. This should trigger for requests such as Add validation support in Micronaut; Review Micronaut validation rules; Improve request validation in Micronaut REST APIs; Add custom validation constraints in Micronaut; Validate Micronaut configuration properties. Part of Plinth Toolkit
payment-security-clerk-billing-stripe
harperaa/secure-claude-skills
Implement secure payments using Clerk Billing and Stripe without ever touching card data. Use this skill when you need to set up subscription payments, handle webhooks, implement payment gating, understand PCI-DSS compliance, or integrate Stripe Checkout. Triggers include "payment", "Stripe", "Clerk Billing", "subscription", "PCI-DSS", "credit card", "payment security", "checkout", "webhook", "billing".
hookdeck-event-gateway-webhooks
hookdeck/webhook-skills
>
replicate-webhooks
hookdeck/webhook-skills
>
fusionauth-webhooks
hookdeck/webhook-skills
>
chat-sdk
lobehub/lobehub
Build multi-platform chat bots with the chat SDK. Use for Slack, Teams, Google Chat, Discord, GitHub, Linear bots, webhooks, mentions, slash commands, cards, modals, or streaming responses.
Convex Agents Rate Limiting
sstobo/convex-skills
Controls message frequency and token usage to prevent abuse and manage API budgets. Use this to implement per-user limits, global caps, burst capacity, and token quota management.
grpc-expert
personamanagmentlayer/pcl
Expert-level gRPC, Protocol Buffers, microservices communication, and streaming
ccxt-go
ccxt/ccxt
CCXT cryptocurrency exchange library for Go developers. Covers both REST API (standard) and WebSocket API (real-time). Helps install CCXT, connect to exchanges, fetch market data, place orders, stream live tickers/orderbooks, handle authentication, and manage errors in Go projects. Use when working with crypto exchanges in Go applications, microservices, or trading systems.
chargebee-webhooks
hookdeck/webhook-skills
>
api-design-expert
personamanagmentlayer/pcl
Expert-level API design principles, REST, GraphQL, versioning, and API best practices
enonic-content-management
webmaxru/enonic-agent-skills
Generates Enonic XP scripts for bulk content operations — creating, updating, querying, migrating, and transforming content using lib-content and lib-node APIs. Covers the query DSL (NoQL), aggregations, batch processing, task controllers for long-running operations, and export/import workflows. Use when writing bulk content creation, update, or deletion scripts, querying with NoQL syntax, migrating content between environments, running long-running task operations, or working with aggregations and paginated retrieval. Do not use for Guillotine GraphQL frontend queries, content type schema definitions, single contentLib.get() calls, or non-Enonic data migration tools.
api-design
yonatangross/orchestkit
API contract design for REST and GraphQL, covering resource shape, URL and header versioning with deprecation windows, RFC 9457 Problem Details error handling, and OpenAPI specs. Use when specifying the wire contract an endpoint exposes, choosing a versioning scheme, or standardizing error response bodies across services. Framework-agnostic protocol layer, not runtime implementation.
cloudflare-worker-dev
curiositech/some_claude_skills
Cloudflare Workers, KV, Durable Objects, and edge computing development. Use for serverless APIs, caching, rate limiting, real-time features. Activate on "Workers", "KV", "Durable Objects",
openapi-expert
rightnow-ai/openfang
OpenAPI/Swagger expert for API specification design, validation, and code generation
graphql-expert
personamanagmentlayer/pcl
Expert-level GraphQL API development with schema design, resolvers, and subscriptions
llm-gateway
bagelhole/devops-security-agent-skills
Deploy an API gateway for LLM traffic with load balancing, rate limiting, key management, semantic caching, fallback routing, and cost tracking. Covers LiteLLM Proxy, OpenRouter-compatible setup, and custom Nginx/Traefik patterns.
golang-gin-api
henriqueatila/golang-gin-best-practices
Build REST APIs with Go Gin. Use when creating Go web servers, adding Gin routes, writing handlers, or asking about middleware, binding, error handling, or project structure.
webhook
membranedev/application-skills
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performing-api-fuzzing-with-restler
mukul975/anthropic-cybersecurity-skills
Uses Microsoft RESTler to perform stateful REST API fuzzing: compiles
browser-tools
yonatangross/orchestkit
Security wrapper over the upstream agent-browser skill, adding URL blocklisting, rate limiting, robots.txt enforcement, and scraping guardrails. Use when automating browser workflows that need safety limits.
vercel
acedatacloud/skills
Inspect Vercel projects, deployments, build logs and domains via the Vercel REST API. Use when the user mentions Vercel, a deployment that failed / is building, build or runtime logs, a preview URL, project domains, or wants to check / redeploy a Vercel project.
figma
acedatacloud/skills
Read Figma design files, nodes, rendered images and comments via the Figma REST API. Use when the user mentions Figma, a figma.com file link, implementing a design as code, extracting design tokens / colors / spacing, or summarizing comments on a design.
stripe-payments
eyadsibai/ltk
Use when implementing payment processing, Stripe integration, subscription billing, checkout flows, webhooks, or asking about "Stripe", "payments", "subscriptions", "checkout", "PCI compliance", "webhooks", "refunds
api-designer
404kidwiz/claude-supercode-skills
REST/GraphQL API architect specializing in OpenAPI 3.1, HATEOAS, pagination, and versioning strategies
tweetsmash-api
pedronauck/skills
Uses the TweetSmash REST API to fetch bookmarks, inspect labels, and add or remove labels from saved tweets. Use when integrating TweetSmash into scripts, agents, workflows, cron jobs, or internal tools that need bookmark retrieval, filtering, pagination, or label management. Do not use for direct browser automation inside TweetSmash, unrelated X or Twitter APIs, or tasks that only need product marketing copy.
stripe-implementer
shipshitdev/skills
Implement Stripe payment processing, subscription management, webhook handling, and customer management in Next.js and NestJS applications. Use when integrating Stripe payments, subscription billing, webhooks, customer management, or checkout and payment intents.
nemo-relay-plugin-build
nvidia/skills
Use this skill when building or packaging reusable NeMo Relay runtime behavior as an embedded configuration component or a manifest-backed `rust_dynamic` native or `worker` gRPC plugin, with deterministic validation and rollback-safe registration.
graphql-design
rohitg00/awesome-claude-code-toolkit
GraphQL schema design, resolver patterns, subscriptions, DataLoader for N+1 prevention, and error handling