13,257 tagged Backend and APIs, measured the same way as everything else here.
Browse within: LLM 148agents 116skills 116agent 88agentic-ai 85api 80azure 68antigravity 65claude-code-plugin 61ai-coding 57cursor 54cli 53cybersecurity 53javascript 52
Skill Claude CodeCodex
Reference for the Ada Diamonds public REST API (https://www.adadiamonds.com/api/v1) covering every endpoint, self-serve API keys and OAuth 2.1 scopes, the public sandbox key, rate limits, error shapes, versioning, and working curl examples. Use when integrating with Ada Diamonds over HTTP, generating client code…
Skill Codex
Provides the official Protobuf specifications and gRPC/REST service definitions for the Gemini API (Google Generative Language API v1beta). Use this skill when you need precise schema definitions for requests/responses (e.g., GenerateContent, Tools, FunctionCalling), multimodal content structures (Content, Part)…
Skill Claude CodeCodex
Control and monitor a libp2p node (peer discovery, messaging, file sharing, network monitoring, and DeFi coordination) via Claude Desktop.
Ratnam-Mishra/canvas-apps-plugin-codex
Skill Claude Code
Guide the user to add a data source, connection, or API connector to a Canvas App via Power Apps Studio, then verify and continue. USE WHEN the user asks to add a data source, add a connection, add an API, add a connector, connect to SharePoint / Dataverse / SQL / Excel / OneDrive / Teams / Office 365, or any similar…
Skill Claude Code
Create branded architecture, IT current-state, flowchart, sequence, state machine, ER/data model, timeline, swimlane, quadrant, radar/spider, polar chart (polar/radial lollipop), loop/flywheel, nested, tree, org chart, layer stack, Venn, pyramid/funnel, treemap, bar, line, Gantt and scatter charts, high-level…
Skill Claude CodeCodex
CLI for the Make.com automation platform. Manage organizations, teams, folders, scenarios, webhooks, connections, data stores, functions, and sync entire orgs to local disk for analysis. Also covers Make.com MCP server setup, zone configuration, blueprint analysis, and searching for properties across synced scenario…
Skill Claude CodeCodex
Use when asked to check, audit, or review a web application's security, authentication, permissions, access control, error handling, API/endpoint surface, or database management — including "is my app secure", "check my auth", "review my permissions", "find vulnerabilities", or a pre-launch/pre-handover review.
SpillwaveSolutions/using-firebase
Skill Claude Code
Comprehensive Firebase development guidance for GCP-hosted applications. Covers Firestore database operations (CRUD, queries, transactions, data modeling), Cloud Functions (1st and 2nd generation, TypeScript and Python, all trigger types), Firebase CLI operations, emulator setup and data persistence, security rules…
Skill Claude CodeCodex
Expert Omeka S developer assistant for Docker-based installations. Covers theme development (SCSS/CSS, templates), module creation (PHP, events, database), configuration management, and troubleshooting. Use for Omeka S customization from simple CSS tweaks to advanced module development.
oquidave/production-ready-agent-skills
Skill Claude CodeCodex
Send an SMS via the Africa's Talking SMS API. Use whenever the user wants to send a text message, alert, OTP, notification, "send SMS to ", or any phrasing that involves delivering a short message to a mobile phone in Africa. The skill posts to Africa's Talking's REST endpoint and returns the delivery status.
Skill Claude Code
Scaffolds a new Express.js REST API application with TypeScript, structured routing, middleware, and error handling. Guides through project creation, configuration, and initial setup. Use when the user wants to create, start, or scaffold a new Express server, API, or backend project.
Skill Claude CodeCodex
Guide agents through the OutboundSync API v1 and hosted MCP: auth, scopes, Sources vs destinations vs Sync Monitoring Webhooks vocabulary, discovery, pipeline metrics, and which specialized skill to run. Use when the user asks how to use the OutboundSync API, what their API key can access, which endpoint or MCP tool…
Skill Claude CodeCodex
Reference for litd (Lightning Terminal) gRPC API in Go: managing accounts, baking macaroons, listing payments, and creating LNC sessions.
grasscaograss/AwesomeWeldoneSkills
Skill Claude CodeCodex
A reference guide to the ModelBase finite-state machine, a program structure that moves through named states when events occur. It documents the states, transitions, workflow data, services, and execution flow for the system.
Skill Claude CodeCodex
Review backend code that integrates with external/third-party APIs (payment providers, banks, KYC, card networks, crypto exchanges, SMS/OTP, any outbound HTTP/gRPC to a system you do not own). Checks planning of failure modes, idempotency, timeout and retry strategy, response code classification, duplicate-transaction…
Skill Claude CodeCodex
Build integrations with Snippe (api.snippe.sh), a Tanzania payment processing API. Use this skill whenever the user mentions Snippe, is working on payment integrations for Tanzania (mobile money via M-Pesa, Airtel Money, Mixx by Yas, Halotel; credit/debit cards via Visa/Mastercard; dynamic QR codes), needs to accept…
Skill Claude Code
Use when writing Python code that imports from inkbox, uses pip install inkbox, or when adding email, phone, or agent identity features using the Inkbox Python SDK.
Ahmustufa/nestjs-best-practices-skill
Skill Claude CodeCodex
NestJS expert best practices for writing, reviewing, or refactoring NestJS code. Triggers on tasks involving NestJS modules, controllers, services, DTOs, guards, interceptors, TypeORM entities, authentication, configuration, or performance patterns.
Skill Claude CodeCodex
You are an expert at building applications with the Anthropic Claude API. Help the user write correct, idiomatic code using the latest API patterns and SDK conventions.
Skill Claude CodeCodex
Build, debug, and optimize Claude API / Anthropic SDK apps. Apps built with this skill should include prompt caching. Also handles migrating existing Claude API code between Claude model versions (4.5 → 4.6, 4.6 → 4.7, retired-model replacements). TRIGGER when: code imports anthropic/@anthropic-ai/sdk; user asks for…
MCKRUZ/intent-driven-development
Skill Claude Code
Add a new endpoint / route / use case / service the way this Node + TypeScript codebase already does it. Use when building an API surface, a request handler, a validator, a port/adapter, or a container registration in a Node/TypeScript repo. Finds the one canonical example and mirrors its layering, validation, error…
Skill Claude CodeCodex
Best practices for building with the Perigon News Intelligence API. Use this skill when searching or filtering news articles, tracking evolving stories, generating AI-powered summaries, performing semantic vector search over news or Wikipedia, querying people, companies, journalists, or sources databases, or…
Skill Claude CodeCodex
Scaffold a production-ready REST API endpoint with CRUD operations, input validation, error handling, rate limiting, and test skeletons. Supports Express and Fastify.
Skill Claude CodeCodex
House conventions for writing code in a Django codebase: formatter and linter compliance (black, isort, djlint, flake8), imports at module top with real refactors for circular imports, docstrings over comment blocks, maintained libraries over hand-rolled code, full test coverage as a merge gate, one squashed migration…
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: