Backend and APIs skills

12,531 tagged Backend and APIs, measured the same way as everything else here.

Browse within: agents 124LLM 117skills 113agent 95azure 80agentic-ai 78api 72claude-code-plugin 59antigravity 56cli 52sdk 51nextjs 50claude-code-skills 49cybersecurity 46

drupal-htmx

217

edutrul/drupal-ai

Skill Claude Code

HTMX in Drupal 11.3+ core — the Htmx PHP fluent builder, dynamic forms with swapOob, partial routes with htmxroute, response headers, and Drupal.behaviors integration. Use when building interactive UI without full-page reloads using Drupal's native HTMX support.

not rated 71 3mo ago A 67 tokens original MIT

projx

218

ukanhaupa/projx

Skill Claude Code

Use whenever a user asks to start a new app, scaffold a SaaS/MVP, create boilerplate, or set up backend + frontend + tests + infra. Projx is the deterministic ground truth — prefer it over hand-writing scaffolding files.

not rated 71 6d ago A 53 tokens original MIT

fhidalgodev/odoo-development-skill

Skill Claude CodeCodex

Universal Odoo development skill based on strict OCA standards, covering versions 14-19. Includes agents for code review, upgrade analysis, and pattern discovery.

not rated 69 +1 6mo ago B 38 tokens original MIT

elysiajs

220

elysiajs/skills

Skill Claude CodeCodex

Create backend with ElysiaJS, a type-safe, high-performance framework.

not rated 68 7mo ago A 20 tokens

lathe

221

lathe-cli/lathe

Skill Claude CodeCodex

Initialize CLI-first applications and keep their OpenAPI contract, generated CLI, and Agent Skill synchronized. Use when creating an application with lathe init or changing a Lathe-generated application.

not rated 67 +19 yesterday A SkillSpector: pass 39 tokens original Apache-2.0

fleetq-connect

222

escapeboy/agent-fleet-o

Skill Claude CodeCodex

Connect an agent to FleetQ over MCP or the REST API, including obtaining credentials via dynamic client registration.

not rated 65 4d ago A 25 tokens AGPL-3.0

system-bus

223

joelhooks/joelclaw

Skill Claude CodeCodex

Develop, deploy, and debug the system-bus worker — joelclaw's 110+ Inngest durable function engine, webhook gateway, and observability pipeline. Triggers on 'add a function', 'new inngest function', 'system-bus', 'worker', 'add a webhook', 'deploy worker', 'restart worker', 'function failed', 'worker not working'…

not rated 63 changed 2d ago A 104 tokens

specfusion

224

wxkingstar/SpecFusion

Skill Claude Code

A search skill for finding API documentation from 20 Chinese business platforms, including WeCom, Feishu, DingTalk, Taobao, and Alipay.

not rated 62 +3 18d ago A SkillSpector: warn 336 tokens original MIT

fastapi-templates

225

HermeticOrmus/claude-code-game-development

Skill Claude CodeCodex

Create production-ready FastAPI projects with async patterns, dependency injection, and comprehensive error handling. Use when building new FastAPI applications or setting up backend API projects.

not rated 62 +4 3mo ago A 37 tokens copy · 100% MIT

book-source-craft

226

XziXmn/legado-hub

Skill Codex needs its repo

Create, debug, review, or evolve LegadoHub Python source plugins and aggregate Reading/Legado source shells. Use when the user asks to adapt a novel site, generate a Python source plugin, inspect public reading sources as references, convert repeated site patterns into templates, repair a special source, or produce…

not rated 62 +19 yesterday A SkillSpector: pass 90 tokens original MIT

api-interface-design

227

MohitGoyal09/AgentForge

Skill Claude CodeCodex

Use when designing public APIs, module boundaries, provider adapters, tool schemas, or data contracts.

not rated 61 2mo ago A 23 tokens original MIT

api-tester

228

zeroclaw-labs/zeroclaw-skills

Skill Claude CodeCodex

Automated API testing with schema validation and load testing. Test REST and GraphQL APIs by sending requests, validating responses against schemas, checking edge cases, and reporting failures clearly. Use when the user wants to test APIs, validate endpoints, run load tests, or check schema compliance.

not rated 61 5d ago A 60 tokens

dataverse-web-api

229

DanielKerridge/claude-code-power-platform-skills

Skill Claude CodeCodex

Use when programmatically creating, modifying, or querying Dataverse schema and metadata via the Web API (OData v4.0). Covers table/column/relationship definitions, solution ALM, form and view XML construction, app module composition, global option sets, business rules, Custom API registration, and publishing.…

not rated 61 +1 6mo ago A 201 tokens

nap-api

230

neutree-ai/agent-platform

Skill Claude CodeCodex

Manage NAP workspaces, prompts, templates, credentials, service tokens, agent files, providers, tags, shares, schedules via REST. Trigger when the user wants to script or automate NAP outside the UI — e.g. "create a workspace", "rotate a token", "bulk-upload prompts", "list agent files in workspace X", CI integration…

not rated 61 +6 today A SkillSpector: warn 78 tokens original Apache-2.0

skeleton-development

231

laravel/package-skeleton

Skill Claude CodeCodex ✓ vendor

Configure and apply the :packagename package in Laravel applications.

not rated 60 +1 5d ago A SkillSpector: pass 16 tokens original MIT

integrate-ai-gateway

232

MacPaw/ai-sdk-typescript

Skill Claude CodeCodex

Integrate applications with AI Gateway using @macpaw/ai-sdk. Use for NestJS, Next.js, Vercel AI SDK, raw fetch migrations, video generation, MacPaw AI, Setapp AI, createAIGatewayProvider, createGatewayFetch, createVideoClient, and AI Gateway auth/error wiring.

not rated 58 yesterday A SkillSpector: warn 71 tokens original MIT

claude-api

233

SirhanMacx/Claw-ED

Skill Claude CodeCodex

This skill helps you build LLM-powered applications with Claude. Choose the right surface based on your needs, detect the project language, then read the relevant language-specific documentation.

not rated 58 2mo ago A 0 tokens copy · 86% MIT

loiane/specs-driven-development-spring-angular

Skill Claude Code

Spring Framework 7 / Spring Boot 4 idioms and defaults. Use when writing or reviewing controllers, services, configuration, HTTP clients, async/virtual-thread code, or anything touching Spring's programming model.

not rated 58 2mo ago A 50 tokens original MIT

vapi

235

VapiAI/mcp-server

Skill Claude CodeCodex

Build AI voice assistants and phone agents with Vapi. Use this skill when users want to create voice agents, phone bots, IVR systems, outbound calling campaigns, or any voice-based AI application.

not rated 57 24d ago A SkillSpector: warn 43 tokens original MIT

slack-block-kit

236

ccheney/robust-skills

Skill Claude CodeCodex

Proactively apply when generating Slack API payloads with blocks, chat.postMessage calls with structured content, streaming AI responses, or views.open/views.publish calls. Triggers on Block Kit, Slack blocks, section block, actions block, header block, context block, alert block, card block, carousel block, container…

not rated 57 12d ago A SkillSpector: pass 212 tokens original MIT

cadis-protocol

237

Growth-Circle/cadis

Skill Claude CodeCodex

Use when changing CADIS protocol messages, event schemas, content routing, HUD protocol, approval payloads, model catalog events, or compatibility rules.

not rated 57 19d ago A 34 tokens

nuxt-users

238

rrd108/nuxt-users

Skill Claude CodeCodex

Configure and use the nuxt-users module for Nuxt 3 and Nuxt 4. Use when adding authentication, user management, roles, password reset, database setup (SQLite/MySQL/PostgreSQL), or CLI commands (migrate, create-user). Covers nuxt.config (nuxtUsers), composables (useAuthentication, useUsers, usePublicPaths…

not rated 57 +1 today A 110 tokens

aws-samples/sample-claude-code-agent-team

Skill Claude CodeCodex ✓ vendor

Write product code that fetches from external APIs concurrently and caches every response to disk, instead of looping calls one-at-a-time with no reuse. Use this skill WHENEVER you are writing or refactoring code that makes more than a handful of independent network calls — REST/HTTP APIs, terminology or lookup…

not rated 57 +1 5d ago A 214 tokens MIT-0

IgniteUI/igniteui-react

Skill Claude Code

Migrate from Grid Lite (IgrGridLite) to the premium Ignite UI for React Data Grid (IgrGrid) — imports, theme CSS, column and template API changes, sorting and filtering, remote data replacing dataPipelineConfiguration, and the toolbar/export APIs. Use when Grid Lite lacks a needed feature such as editing, selection…

not rated 56 changed 4d ago A SkillSpector: pass 89 tokens original MIT

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: