Backend and APIs skills

13,243 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

SalesforceDiariesBySanket/Copilot-Skills-Salesforce

Skill Claude CodeCodex

Designs and architects Salesforce solutions using the Well-Architected framework (Trusted, Easy, Adaptable), Architect Decision Guides, and integration patterns. Use when the user mentions Salesforce architecture, solution design, org strategy, data modeling, integration patterns, multi-cloud design, Agentforce…

not rated 39 +1 8mo ago A 131 tokens

nodejs-sdk

290

pontjs/pontx

Skill Claude CodeCodex

Type-safe Node.js API client SDK with validation, mocking, retry, and logging. Use when building API clients for Node.js applications.

not rated 38 2mo ago A 31 tokens

Supabase Developer

291

daffy0208/ai-dev-standards

Skill Claude CodeCodex

Build full-stack applications with Supabase (PostgreSQL, Auth, Storage, Real-time, Edge Functions). Use when implementing authentication, database design with RLS, file storage, real-time features, or serverless functions.

not rated 38 10mo ago A 49 tokens original MIT

compose-python-stack

292

leynier/python-template

Skill Codex

Design and generate a compatible project from the Python Template component layers or presets. Use when choosing a workload, framework, AI providers, data engines, interfaces, training and serving tools, deployment target, or IaC option; also use when a user wants a simple library, CLI, or API without AI.

not rated 37 28d ago A SkillSpector: pass 65 tokens original MIT

flowllm-dev

293

FlowLLM-AI/flowllm

Skill Claude CodeCodex

FlowLLM repository development guidance. Use when working in the flowllm codebase to implement, debug, test, review, or document FlowLLM runtime behavior, including CLI/client calls, services, application wiring, jobs, steps, components, configuration, streaming, registry registration, and tests.

not rated 37 +1 4mo ago A 65 tokens original Apache-2.0

odds-api

294

odds-api/odds-api

Skill Claude CodeCodex

Build custom apps, bots, dashboards, scanners, and MCP workflows using Odds API data access.

not rated 37 1mo ago A 23 tokens original Apache-2.0

quarkusio/skills

Skill Claude CodeCodex

Scaffold a new Quarkus MCP server project with greeting tools, integration tests, and README. Use when the user wants to create, scaffold, or generate a Quarkus MCP server, mentions "quarkus mcp", "quarkus mcp server", "quarkiverse mcp", or asks to generate a Quarkus project with MCP tools.

not rated 37 yesterday A 84 tokens original Apache-2.0

integrate-unprice-sdk

296

jhonsfran/unprice

Skill Codex

Integrate and troubleshoot the @unprice/api TypeScript SDK in server-side Node.js, Next.js, Hono, or edge applications. Use when onboarding Unprice customers, checking access, enforcing or recording usage, reserving budgets for multi-step workloads, handling Unprice API results, reviewing an existing Unprice…

not rated 36 changed 1mo ago A 97 tokens AGPL-3.0

add-test

297

KhaledSaeed18/node-express-boilerplate

Skill Claude CodeCodex needs its repo

Scaffold unit and integration tests for an existing resource or service. Use when the user asks to add tests, write tests, or improve test coverage for a specific resource, service, controller, or route.

not rated 36 4d ago A SkillSpector: warn 44 tokens original MIT

orders-domain

298

mrlm-xyz/demo-claude-marketplace

Skill Claude Code

Project-knowledge skill for orders-api. The order lifecycle, invariants, and money handling specific to this codebase. Loads when working on order logic in this service.

not rated 35 1mo ago A SkillSpector: pass 37 tokens original Apache-2.0

bunny-cli

299

BunnyWay/cli

Skill Claude CodeCodex

Manage bunny.net resources from the command line (databases, DNS, Edge Storage, Edge Scripts, static sites, sandboxes, Stream video libraries and imports, authentication, and raw API requests) and query a Bunny Database from application code with @bunny.net/database-client. Use when working with bunny.net (pullzones…

not rated 34 +1 changed 14d ago A 164 tokens original MIT

web-application

300

ludo-technologies/python-best-practices

Skill Claude Code

FastAPI web application best practices covering authentication and authorization, SQLAlchemy 2.0 async sessions, transactions, eager loading, and Alembic migrations, non-blocking I/O and shared HTTP clients, request/response schemas, error responses, pagination, typed settings, app factory and lifespan, request-ID…

not rated 34 +1 9d ago A 112 tokens original MIT

codex-fast-proxy

301

gaoguobin/codex-fast-proxy

Skill Claude Code

Codex App Fast proxy and auth-split for third-party OpenAI-compatible APIs. Supports Sign in with ChatGPT, priority servicetier, Responses API benchmark, enable/check/update/uninstall.

not rated 33 +1 5mo ago B 45 tokens original MIT

algorand-devrel/algorand-agent-skills

Skill Claude CodeCodex

Builds x402 HTTP-native payment applications on Algorand using TypeScript. Covers clients (fetch, axios), servers (Express, Hono), facilitators, paywalls, Next.js integration, and the @x402/core library. Use when implementing x402 payment flows in TypeScript, creating payment-gated APIs, building x402 facilitators or…

not rated 33 changed 1mo ago A SkillSpector: pass 90 tokens original MIT

api-gateway

303

maton-ai/api-gateway-skill

Skill Claude Code

Call third-party APIs through the Maton gateway, which injects the credential for an app the user has already connected. Use this skill when the user names a connected app and a concrete action in it - read a mailbox, query a CRM, file an issue, update a spreadsheet, run a query through a connected search or scraping…

not rated 33 changed 27d ago A 173 tokens copy · 97% MIT

symvault

304

danieljustus/symaira-vault

Skill Claude CodeCodex

Use Symaira Vault as the credential manager for AI agents through native MCP tools. Prefer this when storing, retrieving, generating, or rotating passwords, tokens, API keys, and TOTP codes.

not rated 33 today A SkillSpector: warn 43 tokens original Apache-2.0

create-handler

305

girijashankarj/cursor-handbook

Skill Cursor

Create a new API handler following the handler pattern. Use when the user asks to create an endpoint, handler, or route.

not rated 33 2mo ago A SkillSpector: pass 28 tokens original MIT

Api Design

306

eftechcombr/glpi

Skill Claude CodeCodex

Design RESTful APIs following best practices.

not rated 33 7d ago A 10 tokens GPL-3.0

api-client

307

ocbunknown/fastapi-claude-template

Skill Claude Code

Use when integrating an external HTTP API (Stripe, GitHub, Twilio, a payment provider, etc.) into the project. Enforces the Client + Service split — Client lives in infrastructure and returns raw vendor-shaped Pydantic responses, Service lives in application and maps raw responses to application Result types. Covers…

not rated 32 6mo ago A 102 tokens original MIT

backend-patterns

308

joneqian/claude-skills-suite

Skill Claude CodeCodex

Backend architecture patterns, API design, database optimization, and server-side best practices for Node.js, Express, NestJS, FastAPI, and Next.js API routes.

not rated 32 8mo ago A 37 tokens original MIT

SwiftMesh

309

zjinhu/SwiftMesh

Skill Claude CodeCodex

SwiftMesh uses a builder pattern on the Mesh class. Every configuration method returns Self, enabling fluent chaining. The flow is.

not rated 32 5mo ago A 0 tokens original MIT

acme-cse

310

ankraft/ACME-oneM2M-CSE

Skill Claude CodeCodex

Answer questions about the ACME oneM2M CSE open source project — installation, configuration, runtime options, protocol bindings, plugins, scripting, and development. Use this skill whenever the user asks anything about ACME CSE, oneM2M, acmecse, acme.ini, CSE setup, or running/configuring the ACME middleware, even if…

not rated 31 yesterday A SkillSpector: warn 105 tokens original BSD-3-Clause

krivoox/agent-stack-template

Skill Claude CodeCodex

Configure multi-tenant organizations, manage members and invitations, define custom roles and permissions, set up teams, and implement RBAC using Better Auth's organization plugin. Use when users need org setup, team management, member roles, access control, or the Better Auth organization plugin.

not rated 31 1mo ago A SkillSpector: warn 61 tokens original MIT

maxnorm/magento2-agent-skills

Skill Claude CodeCodex

Implements scheduled tasks and background processing for Magento 2. Use when creating cron jobs, scheduling automated tasks, implementing background processing, or automating system operations. Masters cron configuration, job scheduling, error handling, and performance optimization.

not rated 31 9mo ago A 54 tokens original MIT

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