12,386 tagged Backend and APIs, measured the same way as everything else here.
Browse within: agents 125LLM 116skills 111agent 97azure 79agentic-ai 77api 72antigravity 61claude-code-plugin 59sdk 51nextjs 50claude-code-skills 49cli 49ai-coding 47
Skill Claude CodeCodex
Use when building email features, emails going to spam, high bounce rates, setting up SPF/DKIM/DMARC authentication, implementing email capture, ensuring compliance (CAN-SPAM, GDPR, CASL), handling webhooks, retry logic, making emails accessible (alt text, headings, contrast, screen readers), or deciding transactional…
Skill Claude Code
Identify and select the right Ignite UI Web Components for your app UI, then navigate to official docs, usage examples, and API references.
dodo-reach/hermes-link-curator
Skill Claude CodeCodex needs its repo
Maintain and debug the link-curator web dashboard (port 8090). Separate process from the official Hermes dashboard.
Skill Claude CodeCodex
Write Telegram bots and userbots with Pytdbot (async TDLib Python client). Use when the user works with Pytdbot, TDLib, or pytdbot.Client.
Skill Claude CodeCodex
Build astrology features using the Astrologer API — natal charts, synastry, transits, composite charts, solar/lunar returns, moon phases, compatibility scores, and AI-optimized context. Use when the user asks to add astrology to an app, generate birth charts, calculate compatibility, render SVG charts, get planetary…
Skill Claude CodeCodex
Entry point for KeiRouter — local/remote AI gateway with OpenAI-compatible REST for chat, image, TTS, embeddings, web search, web fetch. Use when the user mentions KeiRouter, KEIROUTERURL, or wants AI without writing provider boilerplate. This skill covers setup + indexes capability skills; fetch the relevant…
totvs/engpro-advpl-tlpp-skills
Skill Claude CodeCodex needs its repo
Build optimized and safe SQL queries for Protheus tables. Automatically includes mandatory filters (DELET, branch), suggests appropriate indexes from SIX patterns, generates both Embedded SQL (preferring FWExecStatement) and Workarea (DBSelectArea/DBSeek) versions, and warns about common Protheus SQL pitfalls. Use…
Skill Codex
Add or change domain capabilities in this Invokta Action Engine with explicit contracts, authenticated access, engine-owned dependencies, migrations, and tests. Use when a user asks to add an action, tool, capability, domain behavior, repository operation, schema, or capability ID, or to expose behavior consistently…
smartcontractkit/chainlink-agent-skills
Skill Claude CodeCodex
Help developers build with Chainlink Data Streams, including credentials guidance, report decoding, REST and WebSocket report retrieval with official Go/Rust/TypeScript SDKs, High Availability streaming, on-chain report verification, real-time frontend displays, report schema guidance, SQLite persistence, and…
Skill Claude CodeCodex
Interact with third-party or self-hosted services (Slack, Google Workspace, Dropbox, GitHub, Linear, Coolify...) using their HTTP APIs on the user's behalf.
IgorWarzocha/Opencode-Workflows
Skill OpenCode
Review Convex security audit patterns for authentication and authorization. Use for auditing query/mutation auth, row-level security, and validators. Use proactively when reviewing Convex apps (convex/ directory present). Examples: user: "Audit these Convex mutations" → check for missing ctx.auth and input validators…
selmakcby/claude-agents-skills
Skill Claude Code
Backend API design specialist. Use when building REST/GraphQL APIs, designing endpoints, data models, or backend architecture. Covers RESTful principles, HTTP semantics, error handling, versioning, and OWASP-aligned security.
Skill Claude CodeCodex
AWS serverless and event-driven architecture expert based on Well-Architected Framework. Use when building serverless APIs, Lambda functions, REST APIs, microservices, or async workflows. Covers Lambda with TypeScript/Python, API Gateway (REST/HTTP), DynamoDB, Step Functions, EventBridge, SQS, SNS, and serverless…
revfactory/claude-code-harness
Skill Claude Code
Event-driven microservice architecture patterns guide. Use when the user requests implementing microservices, event bus, SAGA pattern, orchestration, compensating transactions, or distributed system coordination.
Skill Claude CodeCodex
Scaffold Spikard projects and generate code from OpenAPI, AsyncAPI, OpenRPC, GraphQL, and Protobuf schemas using the Spikard CLI or its MCP server. Use when building or updating Spikard-based apps, fixtures, test apps, or agent workflows that should prefer code generation over handwritten boilerplate.
Skill Claude CodeCodex
Use when building, testing, debugging, or reviewing Model Context Protocol servers, clients, transports, tools, resources, prompts, and agent host configuration.
Skill Codex
Operate Binance Spot market, account, and order APIs through UXC with a curated OpenAPI schema, Binance query signing, and separate mainnet/testnet link flows.
Skill Claude CodeCodex
POST https://api.zoom.us/v2/users/me/meetings Authorization: Bearer {accesstoken}.
hellangleZ/burn-in-cceverywhere-ralph
Skill Claude CodeCodex
Backend architecture patterns, API design, database optimization, and server-side best practices for Node.js, Express, and Next.js API routes.
Skill Claude Code needs its repo
Implement a Django feature following the opinionated architecture — prefixed ULID IDs, repository pattern, Pydantic DTOs, svcs service locator, project-scoped django-ninja API, Celery reliable signals, and layered tests. Use when the user asks to add a new entity, endpoint, app, or business logic in a Django project…
wsimmonds/claude-nextjs-skills
Skill Claude Code
Guide for advanced Next.js App Router patterns including Route Handlers, Parallel Routes, Intercepting Routes, Server Actions, error boundaries, draft mode, and streaming with Suspense. CRITICAL for server actions (action.ts, actions.ts files, 'use server' directive), setting cookies from client components, and form…
Skill Claude CodeCodex
Framework-agnostic HTTP API route testing patterns, authentication strategies, and integration testing best practices. Supports REST APIs with JWT cookie authentication and other common auth patterns.
Skill Claude CodeCodex
Create or bootstrap an Elixir/Phoenix project or package with Igniter and VibeKit. Use only for new-project generation or applying initial quality/tooling setup; use elixir for an existing backend project and elixir-web for existing UI/frontend work.
filipebraida/adonisjs-starter-kit
Skill Claude Code
Build an end-to-end CRUD stack in AdonisJS + Inertia: resource route → thin controller → VineJS validator → Bouncer policy → single-purpose action → transformer variant → Inertia page. Trigger on: "add CRUD for X", "create resource", "list/create/edit/delete X", "resource endpoint".
At most 3 mods per repository are shown here, and a mod shipped inside a plugin is left to that plugin's page — the rest are on their repository pages: