Backend and APIs skills

13,244 tagged Backend and APIs, measured the same way as everything else here.

Browse within: LLM 148agents 117skills 114agent 88agentic-ai 85api 80azure 68antigravity 66ai-coding 63claude-code-plugin 61cursor 54cli 53cybersecurity 53javascript 52

momen-baas

409

momen-tech-org/momen-cursor-rules

Skill OpenCode

Instructions and authentication code for building headless BaaS applications with Momen.app. Use when integrating Momen backend features like GraphQL, actionflows, AI agents, binary assets, and Stripe payments, or when you need developer authentication.

not rated 16 6mo ago A 53 tokens

ha-api

410

nodnarbnitram/claude-code-extensions

Skill Claude Code

Integrate with Home Assistant REST and WebSocket APIs. Use when making API calls, managing entity states, calling services, subscribing to events, or setting up authentication. Activates on keywords REST API, WebSocket, API endpoint, service call, access token, Bearer token, subscribeevents.

not rated 16 6mo ago A 62 tokens original MIT

Knuckles-Team/vector-mcp

Skill Claude CodeCodex

Select and connect the right vector-store backend for the vector-mcp MCP server — chromadb, postgres/pgvector, qdrant, couchbase, or mongodb — and supply the correct dbtype/connection parameters that every collection and search call needs. Use when the agent must decide which engine to target, wire up…

not rated 16 today A SkillSpector: pass 113 tokens original MIT

rails-api-controllers

412

Shoebtamboli/rails_claude_skills

Skill Claude CodeCodex

RESTful API controller patterns for Ruby on Rails. Use when: (1) Building JSON APIs, (2) API versioning, (3) Error handling and status codes, (4) Authentication with tokens/JWT, (5) Rate limiting, (6) CORS configuration, (7) Pagination and filtering, (8) API documentation, (9) Testing API endpoints.

not rated 16 +1 4mo ago A 82 tokens original MIT

odoo-mcp

413

rachmataditiya/odoo-rust-mcp

Skill Claude CodeCodex

Autonomous Odoo ERP operations, schema inspection, workflow actions, reporting, and database queries via the Odoo MCP Server. Use whenever the user asks to query Odoo models (sale.order, account.move, stock.picking, purchase.order, res.partner, hr.employee, etc.), inspect fields and relations, perform safe data…

not rated 16 +2 5d ago A 100 tokens original MIT

svg-chart

414

NUGURI-7/CoCoWork

Skill Claude CodeCodex

Render data into a standalone SVG chart file — bar, line, or pie. Use when the user provides numbers (inline, JSON, or CSV) and asks for a chart, graph, plot, trend, comparison, breakdown, or any visual summary of the data. Produces a self-contained .svg viewable in any browser; no external libraries required.

not rated 15 10d ago A SkillSpector: pass 75 tokens original MIT

nats

415

kaustavdm/nats-skill

Skill Claude CodeCodex

Use when developing with NATS messaging, deploying or embedding a NATS server, working with JetStream streams/consumers/KV/object-store, configuring NATS security or clustering, or building microservices on the NATS protocol.

not rated 15 7mo ago A 48 tokens original MIT

s-gw

416

sgateway/s-gw

Skill Claude CodeCodex

Use s-gw when working with credentials, private keys, API tokens, SSH identities, browser credentials, or other sensitive data in agentic coding workflows. Prefer typed handles and local approved execution over exposing raw secret values to a model.

not rated 15 5d ago A 51 tokens original Apache-2.0

cpipe

417

stefanwebb/named-pipes

Skill Claude Code

Use cpipe to discover, inspect, and send commands to named-pipe tool servers.

not rated 15 1mo ago A 21 tokens CC-BY-SA-4.0

charlesmu99/speccrew

Skill Claude CodeCodex

Unified Feature Analysis & Design SOP. Performs complete feature analysis (read PRD, load system knowledge, function breakdown with [NEW]/[MODIFIED]/[EXISTING] markers) followed by detailed design (frontend/backend/data) and generates complete Feature Spec document using template-first workflow. Combines analysis and…

not rated 15 6mo ago A 99 tokens original Apache-2.0

courier

419

trycourier/courier-skills

Skill Claude CodeCodex

Use when building notifications with Courier across email, SMS, push, in-app inbox, Slack, Teams, and WhatsApp: sends, templates, translations, email client previews, Elemental, journeys, preferences, routing, CLI and MCP.

not rated 15 changed 8d ago A SkillSpector: pass 51 tokens original MIT

clasp-setup

420

mathruffian-dot/clasp-gas-skill

Skill Codex

Instructions for connecting a coding agent to Google Apps Script through `clasp`, Google’s command-line tool for downloading and uploading Apps Script code.

not rated 15 2mo ago A SkillSpector: warn 103 tokens original MIT

assemblyai

421

AssemblyAI/assemblyai-skill

Skill Claude CodeCodex

Use when implementing speech-to-text, audio transcription, real-time streaming STT, dictation (spoken notes turned into cleaned-up text), text-to-speech (TTS, speech synthesis), audio intelligence features, or voice AI using AssemblyAI APIs or SDKs. Use when user mentions AssemblyAI, Blurt (AssemblyAI's Mac dictation…

not rated 15 +1 changed yesterday A Socket: passSnyk: pass 160 tokens

architecture-patterns

422

garrettw/php-arch-skills

Skill Claude CodeCodex

Use this skill when choosing a system-level architecture (monolith, modular monolith, microservices, event-driven, serverless, clean/hexagonal, or DDD) for a new or growing PHP application, or when weighing a premature move to a more distributed style. Provides a decision guide and the common pitfalls that cause…

not rated 15 +1 3mo ago A 77 tokens original MPL-2.0

2api-skill

423

69gg/2api-skill

Skill Codex

A method for turning a web chat service into a local server that accepts common OpenAI- or Anthropic-style API requests.

not rated 15 +1 3mo ago B 141 tokens original MIT

code-review-gate

424

wangheng19901021/skills

Skill Claude CodeCodex

Use when generating or reviewing Java backend code (Service/Controller/Mapper) that touches a database, Redis, MQ, RPC, SMS/email, or file writes. Applies a 5-gate checklist (requirements review, concurrency safety, transaction boundaries, null-safety, security) distilled from real production incidents, so…

not rated 15 10d ago A 76 tokens

whatsapp-cloud-api

425

bellopushon/whatsapp-cloud-api

Skill Claude CodeCodex

Official WhatsApp Cloud API reference for building messaging integrations. Covers sending messages (text, media, templates, interactive), receiving webhooks, conversation lifecycle, phone number management, and error handling. Use when building WhatsApp integrations, sending messages, processing webhooks, or working…

not rated 15 4mo ago A Socket: passSnyk: warn 68 tokens original MIT

routir

426

hltcoe/routir

Skill Claude CodeCodex

Use RoutIR — call a running endpoint with the client, stand up a local server that mixes locally-hosted services with services proxied from a remote master server, and extend RoutIR with new bi-encoders, rerankers, and document collections by writing a small config (and optionally one Python file referenced via…

not rated 15 4mo ago A 83 tokens original MIT

razbor-servisa

428

Ntmib/razbor-servisa

Skill Claude Code

A method for turning a third-party online service into a command-line tool by studying its documented API or the requests made by its web browser.

not rated 14 2mo ago A 322 tokens original MIT

greendesertsnow/pocketbase-skills

Skill Claude CodeCodex

PocketBase development best practices covering collection design, API rules, authentication, SDK usage, query optimization, realtime subscriptions, file handling, deployment, and server-side extending (Go + JSVM). Current as of PocketBase v0.40 and JS SDK v0.28. Use when building PocketBase backends, designing…

not rated 14 +1 2mo ago A Socket: warnSnyk: pass 87 tokens original MIT

nbox-serve

430

lance0/nbox

Skill Claude CodeCodex

Run nbox as an MCP server (read-only by default; optional local stdio writes with --local-writes, or shared HTTP/OIDC writes with --allow-writes + nbox:write + [serve.vault]) so an agent host can query NetBox over JSON-RPC — stdio or HTTP+OIDC transport, the read tools (search/get/getinterface/history/…), the…

not rated 14 +1 changed 9d ago A SkillSpector: pass 128 tokens original Apache-2.0

opencode-server-api

431

kevinlin/cowork-z

Skill Claude CodeCodex

Read-only queries against your own OpenCode 2.x server API (server info, sessions, message history, pending permissions and questions, MCP status, skills, agents). Use when you need to inspect your own state, or when the user asks about your session, tools, MCP servers or skills.

not rated 13 changed 2d ago A SkillSpector: warn 65 tokens original MIT

rails-llm-integration

432

nagstler/rails-llm-integration

Skill Claude CodeCodex

Production-grade LLM integration patterns for Ruby on Rails applications. USE THIS SKILL when the user needs to: integrate OpenAI, Claude, or any LLM API into a Rails app; use rubyllm gem or langchain-rb gem in Rails; build AI-powered features in Rails; manage prompts as templates; route between LLM models for cost…

not rated 13 7mo ago A 313 tokens original MIT

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