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Skill catalog

518backend & apis agent skills synced from skills.sh, with their install counts. Read them here, or let your agent fetch the right one through the Graph-of-Skills MCP server.

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Showing 201 to 250 of 518
  1. legacy-modernizer jeffallan/claude-skills

    Designs incremental migration strategies, identifies service boundaries, produces dependency maps and migration roadmaps, and generates API facade designs for aging codebases. Use when modernizing legacy systems, implem…

    4,387 installs
  2. subgraph-migrate goldsky-io/goldsky-agent

    Migrate a subgraph from The Graph to Goldsky as a drop-in replacement — no code changes required. Use this skill when the user wants to move, switch, port, or migrate a subgraph off The Graph (hosted service, Subgraph S…

    4,382 installs
  3. admission-control grafana/skills

    Use when the user asks to "write a validator", "add validation", "implement admission control", "write a mutating webhook", "add a mutation handler", "validate incoming resources", "implement admission logic", "add admi…

    4,280 installs
  4. iii-architecture-patterns iii-hq/iii

    Use when composing iii primitives into backend architectures: durable workflows, reactive backends, observer side effects, agentic pipelines, event-driven CQRS, effect pipelines, and trigger-transform-action automation.

    4,262 installs
  5. nestjs giuseppe-trisciuoglio/developer-kit

    Provides comprehensive NestJS framework patterns with Drizzle ORM integration for building scalable server-side applications. Generates REST/GraphQL APIs, implements authentication guards, creates database schemas, and…

    4,255 installs
  6. spring-boot-rest-api-standards giuseppe-trisciuoglio/developer-kit

    Provides REST API design standards and best practices for Spring Boot projects. Use when creating or reviewing REST endpoints, DTOs, error handling, pagination, security headers, HATEOAS and architecture patterns.

    4,181 installs
  7. spring-boot-security-jwt giuseppe-trisciuoglio/developer-kit

    Provides JWT authentication and authorization patterns for Spring Boot 3.5.x covering token generation with JJWT, Bearer/cookie authentication, database/OAuth2 integration, and RBAC/permission-based access control using…

    4,146 installs
  8. firecrawl-build firecrawl/skills

    Integrate Firecrawl into application code whenever a product, agent, or workflow needs web data inside the app — web search, live search results, page scraping, structured extraction, or browser interaction. Use when bu…

    4,133 installs
  9. graphql-schema apollographql/skills

    Guide for designing and changing GraphQL schemas following industry best practices. Use this skill whenever you create or edit GraphQL SDL, such as a `schema.graphql` file or `typeDefs`, including when: (1) designing a…

    4,115 installs
  10. graphql-architect jeffallan/claude-skills

    Use when designing GraphQL schemas, implementing Apollo Federation, or building real-time subscriptions. Invoke for schema design, resolvers with DataLoader, query optimization, federation directives.

    4,113 installs
  11. spring-data-jpa giuseppe-trisciuoglio/developer-kit

    Provides patterns to implement persistence layers with Spring Data JPA. Use when creating repositories, configuring entity relationships, writing queries (derived and `@Query`), setting up pagination, database auditing,…

    4,104 installs
  12. spring-boot-openapi-documentation giuseppe-trisciuoglio/developer-kit

    Provides patterns to generate comprehensive REST API documentation using SpringDoc OpenAPI 3.0 and Swagger UI in Spring Boot 3.x applications. Use when setting up API documentation, configuring Swagger UI, adding OpenAP…

    4,038 installs
  13. api-review gjkim42/kanon-repo

    Review the current Kelos branch, or an explicitly specified PR, issue, or diff, for Kubernetes API and CRD design quality. Use when asked for a Kelos API review, CRD/API compatibility review, Kubernetes API convention r…

    3,990 installs
  14. openapi-to-typescript softaworks/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 t…

    3,989 installs
  15. yelp fetcher-sh/fetcher-skills

    A Yelp API alternative on fetcher.sh — pay-per-call in USDC via x402, or prepaid credits with a Bearer key, no Yelp Fusion API app approval. Use when the user wants to search local businesses by query and location sorte…

    3,912 installs
  16. youtube-api fetcher-sh/fetcher-skills

    A YouTube API alternative on fetcher.sh — pay-per-call in USDC via x402, or prepaid credits with a Bearer key, no OAuth and no daily quota. Use when the user wants to search YouTube videos with filters for upload date,…

    3,901 installs
  17. google-maps fetcher-sh/fetcher-skills

    A Google Maps API alternative and Google Places API alternative on fetcher.sh — pay-per-call in USDC via x402, or prepaid credits with a Bearer key, no Google Cloud billing account. Use when the user wants to search pla…

    3,897 installs
  18. contract-first affaan-m/ecc

    Coordinate frontend/backend or service-to-service work through one authoritative machine-checkable contract (OpenAPI, AsyncAPI, Protocol Buffers, or JSON Schema), with generated consumer types and contract-verified inte…

    3,885 installs
  19. spring-boot-crud-patterns giuseppe-trisciuoglio/developer-kit

    Provides and generates complete CRUD workflows for Spring Boot 3 services. Creates feature-focused architecture with Spring Data JPA aggregates, repositories, DTOs, controllers, and REST APIs. Validates domain invariant…

    3,873 installs
  20. zod-validation-utilities giuseppe-trisciuoglio/developer-kit

    Creates reusable Zod v4 schemas, validates API payloads, forms, and configuration input, transforms and coerces data safely, and handles validation errors with strong type inference for TypeScript applications. Use when…

    3,853 installs
  21. instagram-scraper fetcher-sh/fetcher-skills

    An Instagram API alternative on fetcher.sh — pay-per-call in USDC via x402, or prepaid credits with a Bearer key, no login and no session cookies. Use when the user wants to resolve an Instagram profile by @handle, sear…

    3,852 installs
  22. spring-boot-event-driven-patterns giuseppe-trisciuoglio/developer-kit

    Provides Event-Driven Architecture (EDA) patterns for Spring Boot — creates domain events, configures ApplicationEvent and @TransactionalEventListener, sets up Kafka producers and consumers, and implements the transacti…

    3,845 installs
  23. api-recon-and-docs yaklang/hack-skills

    API reconnaissance and documentation review playbook. Use when discovering endpoints, schemas, versions, OpenAPI specs, hidden docs, and surface area for API testing.

    3,844 installs
  24. nestjs-best-practices giuseppe-trisciuoglio/developer-kit

    Provides comprehensive NestJS best practices including modular architecture, dependency injection scoping, exception filters, DTO validation with class-validator, and Drizzle ORM integration. Use when designing NestJS m…

    3,841 installs
  25. spring-boot-cache giuseppe-trisciuoglio/developer-kit

    Provides patterns for implementing Spring Boot caching: configures Redis/Caffeine/EhCache providers with TTL and eviction policies, applies @Cacheable/@CacheEvict/@CachePut annotations, validates cache hit/miss behavior…

    3,831 installs
  26. extension-http-endpoints caffeinelabs/skills

    Serve inbound HTTP from a Motoko canister (webhooks, curl POST/GET, bot callbacks, ingest/health APIs) via the IC HTTP Gateway methods `http_request` / `http_request_update`. Load whenever the user or spec needs a canis…

    3,828 installs
  27. tiktok-scraper fetcher-sh/fetcher-skills

    A TikTok API alternative on fetcher.sh — pay-per-call in USDC via x402, or prepaid credits with a Bearer key, no login and no app review. Use when the user wants to search TikTok posts by keyword and sort by most-liked…

    3,815 installs
  28. x-api fetcher-sh/fetcher-skills

    An X API alternative and Twitter API alternative on fetcher.sh — pay-per-call in USDC via x402, or prepaid credits with a Bearer key, no OAuth and no developer application. Use when the user wants to search X posts by k…

    3,806 installs
  29. api-authorization-and-bola yaklang/hack-skills

    API authorization and BOLA testing playbook. Use when APIs expose object identifiers, nested resources, hidden writable fields, or weak function-level authorization.

    3,792 installs
  30. reddit-api fetcher-sh/fetcher-skills

    A Reddit API alternative on fetcher.sh — pay-per-call in USDC via x402, or prepaid credits with a Bearer key, no OAuth app registration. Use when the user wants to search Reddit posts across every subreddit by keyword a…

    3,787 installs
  31. google-play fetcher-sh/fetcher-skills

    A Google Play Store API alternative on fetcher.sh — pay-per-call in USDC via x402, or prepaid credits with a Bearer key, no Google Play Console access. Use when the user wants to search Android apps by keyword with pric…

    3,778 installs
  32. spring-boot-saga-pattern giuseppe-trisciuoglio/developer-kit

    Provides distributed transaction patterns using the Saga Pattern for Spring Boot microservices. Use when implementing distributed transactions across services, handling compensating transactions, ensuring eventual consi…

    3,761 installs
  33. spring-data-neo4j giuseppe-trisciuoglio/developer-kit

    Provides Spring Data Neo4j integration patterns for Spring Boot applications. Use when you need to work with a graph database, Neo4j nodes and relationships, Cypher queries, or Spring Data Neo4j. Creates node entities w…

    3,758 installs
  34. qdrant giuseppe-trisciuoglio/developer-kit

    Provides Qdrant vector database integration patterns with LangChain4j. Handles embedding storage, similarity search, and vector management for Java applications. Use when implementing vector-based retrieval for RAG syst…

    3,732 installs
  35. playwright-dev microsoft/playwright

    Explains how to develop Playwright - add APIs, MCP tools, CLI commands, and vendor dependencies.

    3,729 installs
  36. aws-sdk-java-v2-s3 giuseppe-trisciuoglio/developer-kit

    Provides Amazon S3 patterns and examples using AWS SDK for Java 2.x. Use when working with S3 buckets, uploading/downloading objects, multipart uploads, presigned URLs, S3 Transfer Manager, object operations, or S3-spec…

    3,711 installs
  37. platform-dataspace-access-configure forcedotcom/sf-skills

    Use this skill to configure or inspect Salesforce Data Cloud DataSpace access for permission sets. Grants dataspace-level access via MDAPI PermissionSet XML with dataspaceScopes elements, optionally grants object-level…

    3,702 installs
  38. aws-sdk-java-v2-dynamodb giuseppe-trisciuoglio/developer-kit

    Provides Amazon DynamoDB patterns using AWS SDK for Java 2.x. Use when creating, querying, scanning, or performing CRUD operations on DynamoDB tables, working with indexes, batch operations, transactions, or integrating…

    3,700 installs
  39. aws-rds-spring-boot-integration giuseppe-trisciuoglio/developer-kit

    Provides patterns to configure AWS RDS (Aurora, MySQL, PostgreSQL) with Spring Boot applications. Configures HikariCP connection pools, implements read/write splitting, sets up IAM database authentication, enables SSL c…

    3,696 installs
  40. aws-sdk-java-v2-messaging giuseppe-trisciuoglio/developer-kit

    Provides AWS messaging patterns using AWS SDK for Java 2.x for SQS queues and SNS topics. Handles sending/receiving messages, FIFO queues, DLQ, subscriptions, and pub/sub patterns. Use when implementing messaging with S…

    3,681 installs
  41. kamis-food-price nomadamas/k-skill

    KAMIS 농수축산물 유통 Open API를 k-skill-proxy 경유로 호출해 부류별 도소매 가격과 전일·주간·월간·연간 비교값을 조회한다. 조회 전용.

    3,650 installs
  42. consumer-price-safety-search nomadamas/k-skill

    한국소비자원 참가격과 소비자24 물품·리콜정보를 공식 API로 조회한다. 현재는 서비스별 인증키·메뉴 매핑을 검증하는 draft scaffold다.

    3,649 installs
  43. nestjs-drizzle-crud-generator giuseppe-trisciuoglio/developer-kit

    Generates complete CRUD modules for NestJS applications with Drizzle ORM. Use when building server-side features in NestJS that require database operations, including creating new entities with full CRUD endpoints, serv…

    3,638 installs
  44. better-auth giuseppe-trisciuoglio/developer-kit

    Provides Better Auth integration patterns for NestJS backend and Next.js frontend with Drizzle ORM and PostgreSQL. Use when setting up Better Auth with NestJS backend, integrating Next.js App Router frontend, configurin…

    3,595 installs
  45. feeds goldsky-io/goldsky-agent

    Query Goldsky Feeds for one wallet's balances and transfers, or for the metadata and current USD price of up to 100 EVM tokens in one call. Use for wallet holdings, portfolio value, transfer history, deposit checks, the…

    3,589 installs
  46. spring-boot-project-creator giuseppe-trisciuoglio/developer-kit

    Creates and scaffolds a new Spring Boot project (3.x or 4.x) by downloading from Spring Initializr, generating package structure (DDD or Layered architecture), configuring JPA, SpringDoc OpenAPI, and Docker Compose serv…

    3,556 installs
  47. using-ui-bundle-salesforce-data forcedotcom/sf-skills

    MUST activate when the project contains a uiBundles/*/src/ directory and the task involves ANY Salesforce record operation — reading, creating, updating, or deleting. Use this skill when building forms that submit to Sa…

    3,554 installs
  48. dynamodb-toolbox-patterns giuseppe-trisciuoglio/developer-kit

    Provides TypeScript patterns for DynamoDB-Toolbox v2 including schema/table/entity modeling, .build() command workflow, query/scan access patterns, batch and transaction operations, and single-table design with computed…

    3,525 installs
  49. komsa-ferry-info nomadamas/k-skill

    한국해양교통안전공단 KOMSA MTIS 공식 API로 연안여객선 운항 일정과 선박·항로 정보를 조회한다.

    3,467 installs
  50. db-migrate medusajs/medusa-agent-skills

    Run database migrations in Medusa

    3,464 installs