Backend and APIs skills

12,499 tagged Backend and APIs, measured the same way as everything else here.

Browse within: agents 125skills 114LLM 111agent 90azure 80cursor 78agentic-ai 77api 77claude-code-plugin 60ai-coding-agent 58cli 55antigravity 54sdk 51nextjs 50

harpist

481

kenobi-ai/harpist

Skill Codex

Use when a user asks an agent to inspect, refine, or generate an API/oRPC/OpenAPI contract from website recordings captured by the Harpist Chrome extension. Covers using the published harpist npm CLI through bunx/npx, avoiding sandboxed execution, starting or reusing the local Harpist bridge, syncing extension…

not rated 10 1mo ago A 102 tokens original MIT

Babatunde-Fatai/ai-agent-skills-library

Skill Claude CodeCodex

Implement Flutterwave payment processing for African markets (34+ countries). Use when integrating one-time payments (card, bank transfer, USSD, mobile money), subscriptions/recurring billing, or webhook handling. Covers Next.js and Express implementations with TypeScript. Triggers: payment integration, Flutterwave…

not rated 10 5mo ago A 109 tokens original MIT

build-django-apps

483

lordsarcastic/skills

Skill Codex

Build or modify Django and Django REST Framework applications using the user's preferred service-oriented structure. Use when working on Django settings, Pydantic environment validation, PostgreSQL, DRF APIs without viewsets, serializers, services, schemas, constants, media/static storage, Docker, tests, migrations…

not rated 10 3mo ago A 74 tokens original Apache-2.0

n8n

484

RamithaW/openclaw-skill-n8n

Skill Claude CodeCodex

Design, build, debug, and operate n8n automations. Use when working with n8n workflows (JSON), nodes, expressions, triggers/webhooks, executions, credentials, or when calling the n8n public REST API to list/create/update/activate workflows and inspect executions.

not rated 10 7mo ago A 62 tokens original MIT

golang-manual-di

485

soulcodex/agentic

Skill Claude CodeCodex

Guides manual dependency injection wiring for Go services: three-tier naming taxonomy (Provide/MustProvide/Must), Must-pattern entrypoints, OS-signal-driven context lifecycle, common provider structs, infrastructure must-builders, interface-segregated bus registration, decorator/tracing wrappers, and…

not rated 10 6d ago A SkillSpector: pass 97 tokens original MIT

cyberia-temple/singularity

Skill Claude CodeCodex

Apply this skill whenever writing, reviewing, or refactoring Laravel PHP code. This includes creating or modifying controllers, models, migrations, form requests, policies, jobs, scheduled commands, service classes, and Eloquent queries. Triggers for N+1 and query performance issues, caching strategies, authorization…

not rated 10 yesterday A 114 tokens GPL-3.0

fl-data-layer

487

phanbaohuy96/flutter_base_structure

Skill Claude CodeCodex

Builds the data layer with Freezed DTOs, Retrofit clients, the storage-seam local data manager, and repositories wired through injectable.

not rated 10 20d ago A 31 tokens

keodubo/PAW-Wiki

Skill Codex

Use when planning, implementing, auditing, reviewing, or closing a PAW TP final migration to REST API plus SPA/frontend, especially when the user says TP final, final delivery, pass the app to final, replace MVC/JSP with API+SPA, add Jersey/JAX-RS resources, stateless auth, frontend build…

not rated 10 1mo ago A 104 tokens original MIT

skills-il/developer-tools

Skill Claude CodeCodex

Build conversational AI chatbots with native Hebrew support, including WhatsApp Business API integration, Telegram bot scaffolding, web chat widgets, Hebrew NLP patterns, and RTL chat UI components. Prevents common Hebrew chatbot mistakes like broken RTL alignment, incorrect gender inflections, and poor tokenization…

not rated 10 yesterday A SkillSpector: warn 155 tokens original MIT

halo-plugin-dev

490

halo-dev/dev-skills

Skill Codex

Create or modify Halo CMS plugins, including Java backend code, plugin.yaml and extension resources, Gradle and DevTools configuration, plugin APIs and lifecycle, and Vue-based Console or User Center UI. Use for Halo plugin implementation, migration, debugging, or integration work; do not use for theme-only changes.

not rated 10 11d ago A 65 tokens

orion

491

GoPlasmatic/Orion

Skill Claude CodeCodex

Author, validate, test, deploy, inspect, roll out, and troubleshoot declarative services on Orion using orion-server and orion-cli. Use for Orion workflows, channels, connectors, packages, traces, or runtime operations; do not use for unrelated products also named Orion.

not rated 10 changed 3d ago A SkillSpector: pass 59 tokens original Apache-2.0

dotnet-grpc

492

Postpartum-genushyacinthus29/dotnet-skills

Skill Claude CodeCodex

Build or review gRPC services and clients in .NET with correct contract-first design, streaming behavior, transport assumptions, and backend service integration.

not rated 10 +1 today A SkillSpector: pass 33 tokens original MIT

dublyo/saas-skills

Skill Claude CodeCodex

Build complete Dublyobase backends through remote HTTP MCP, admin REST APIs, and public project APIs. Use when an AI agent needs to connect to a live Dublyobase instance, create projects, design Postgres collections and fields, configure rules, seed records, create app users, upload files, configure…

not rated 10 +1 2mo ago A 115 tokens original MIT

drupaltools/skills

Skill Claude CodeCodex

Generate comprehensive Drupal migration plans with entity mapping, ETL strategies, rollback procedures, and source analysis based on best practices from the Drupal migration guide.

not rated 10 1mo ago A 36 tokens

2api-skill

495

69gg/2api-skill

Skill Claude CodeCodex

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

not rated 10 +1 1mo ago B 141 tokens original MIT

processwire-memory

496

gebeer/processwire-ai-docs

Skill Claude CodeCodex

Stores and retrieves ProcessWire API patterns, gotchas, and conventions via memvid hybrid search. Use when starting PW tasks, hitting PW errors, or when user asks to remember/recall ProcessWire knowledge. Persistent cross-project memory at /.memvid/processwire.mv2.

not rated 10 3mo ago A 58 tokens original MIT

sending-emails

497

mailtrap/mailtrap-skills

Skill Claude CodeCodex

Use when integrating, configuring, or troubleshooting Mailtrap live email sending (Email API or SMTP). Use when wiring outbound mail from an application or choosing how to send.

not rated 10 1mo ago A 37 tokens original MIT

appwrite-python

498

appwrite/cursor-plugin

Skill Claude CodeCodex ✓ vendor

Appwrite Python SDK skill. Use when building server-side Python applications with Appwrite, including Django, Flask, and FastAPI integrations. Covers user management, database/table CRUD, file storage, and functions via API keys.

not rated 10 +1 1mo ago A 48 tokens copy · 83% BSD-3-Clause

create-ai-provider

499

markconroy/markie

Skill Claude CodeCodex

Scaffolds a new AI Provider plugin for the Drupal AI module. Asks which operation types the provider supports (chat, embeddings, text-to-image, etc.), then generates the plugin class with the correct interface implementations, authentication setup, and model discovery.

not rated 10 6d ago A 55 tokens GPL-2.0

18771050470/big-genius-skills

Skill Claude CodeCodex

An architecture guide for connecting legacy or third-party systems without letting their flaws shape the core of a new application.

not rated 10 21d ago A 200 tokens

sinch/skills

Skill Claude CodeCodex

Write C#/.NET Sinch Functions with the Sinch.Functions.Runtime NuGet package. Use when writing or editing a function controller: answering and controlling calls, IVR menus, placing or bridging calls, SMS/WhatsApp/RCS webhooks, custom HTTP endpoints, dependency injection, cache/storage/database and authorization. Also…

not rated 10 +1 today A 105 tokens original Apache-2.0

MacareuxDigital/concretecms-skills

Skill Claude CodeCodex

This skill provides instructions and best practices for implementing a CRUD (Create, Read, Update, Delete) interface for Doctrine entities within the Concrete CMS Dashboard, following standard core patterns.

not rated 9 3mo ago A 41 tokens original MIT

claude-api

503

adryanmoldokkr32-pixel/anthropics-skills

Skill Claude CodeCodex

Build, debug, and optimize Claude API / Anthropic SDK apps. Apps built with this skill should include prompt caching. TRIGGER when: code imports anthropic/@anthropic-ai/sdk; user asks to use the Claude API, Anthropic SDKs, or Managed Agents (/v1/agents, /v1/sessions, /v1/environments). DO NOT TRIGGER when: code…

not rated 9 3mo ago A 0 tokens

firestore-better-auth

504

yultyyev/better-auth-firestore

Skill Claude CodeCodex

Use Firestore as the database adapter for Better Auth (Firebase Admin SDK). Use when storing Better Auth users, sessions, accounts, and verification tokens in Firestore, migrating from Auth.js/NextAuth Firebase adapter to Better Auth, setting up Better Auth with a Firebase/Firestore backend, upgrading a…

not rated 9 9d ago A SkillSpector: warn 100 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: