Backend and APIs agents

kiali/kiali

Agent

The business layer sits between HTTP handlers (handlers/) and the Kubernetes / Prometheus client packages. Its responsibilities are.

davepoon/buildwithclaude

Agent

Develop enterprise blockchain solutions with Hyperledger Fabric v2.5 LTS and v3.x. Expertise in chaincode development, network architecture, BFT consensus, and permissioned blockchain design. Use PROACTIVELY for enterprise blockchain, supply chain solutions, or private network implementations.

microsoft/skills

Agent ✓ vendor

FastAPI/Python specialist for CoreAI DIY backend development with Pydantic, Cosmos DB, and Azure services.

rohitg00/awesome-claude-code-toolkit

Agent

Senior API architect specializing in RESTful design, GraphQL schemas, and API-first development.

microsoft/foundry-local

Agent ✓ vendor

Use when: designing C ABI APIs with opaque types and function pointer tables, creating header-only C++ wrappers over C APIs, adding new API surface area to the SDK, reviewing ABI stability, implementing vtable-based versioned interfaces, wrapping opaque handles with RAII C++ classes.

NVIDIA-AI-Blueprints/video-search-and-summarization

Agent Claude Code

VIOS REST API agent. Queries a running VIOS/VST backend over HTTP to list sensors, fetch recording timelines, download clips, capture snapshots, add/delete sensors and RTSP streams, and upload video files. Use whenever the user wants to interact with VIOS data via its REST API rather than through the UI or source code.

kubb-labs/kubb

Agent

Sets up and maintains Kubb code generation in a consuming app, from choosing plugins to authoring kubb.config.ts and running the kubb CLI. Use for end-to-end "add Kubb to my project" or "generate a typed client from this spec" tasks.

Dicklesworthstone/pi_agent_rust

Agent

Expert backend architect specializing in scalable API design, microservices architecture, and distributed systems. Masters REST/GraphQL/gRPC APIs, event-driven architectures, service mesh patterns, and modern backend frameworks. Handles service boundary definition, inter-service communication, resilience patterns, and…

hesreallyhim/a-list-of-claude-code-agents

Agent

Use this agent when you need expert backend development work in TypeScript with Bun runtime, including API design, database integration, server architecture, performance optimization, or any backend-focused development tasks. Examples: Context: User needs to implement a REST API endpoint for user authentication. user…

hesreallyhim/a-list-of-claude-code-agents

Agent

Use this agent when you need to develop, refactor, or optimize Python backend systems using modern tooling like uv. This includes creating APIs, database integrations, microservices, background tasks, authentication systems, and performance optimizations. Examples: Context: User needs to create a FastAPI application…

uluckyXH/OpenMOSS

Agent

A backend engineering agent that builds server-side features such as APIs, databases, and command-line tools.

first-fluke/oh-my-agent

Agent Codex

PM requirements analysis, task decomposition, API contract definition agent.

Ido-Levi/Hephaestus

Agent Claude Code

Use this agent when you need a comprehensive backend task completed from start to finish in a Python codebase. This includes implementation, testing, validation, and proper integration. Examples:\n\n \nContext: User needs a new API endpoint implemented with full test coverage.\nuser: "I need to add a POST /api/users…

open-gsd/gsd-pi

Agent

Modern JavaScript specialist for browser, Node.js, and full-stack applications requiring ES2023+ features, async patterns, or performance-critical implementations. Use when building WebSocket servers, refactoring callback-heavy code to async/await, investigating memory leaks in Node.js, scaffolding ES module libraries…

nspady/google-calendar-mcp

Agent Claude Code

Implements Google Calendar MCP features based on research findings from gcal-api-research skill. Use after completing API research to write handlers, schemas, tests, and documentation. Specializes in following established patterns and ensuring comprehensive test coverage.

microsoft/skills-for-fabric

Agent ✓ vendor

Build full-stack applications on top of Microsoft Fabric using Python, ODBC, XMLA, and REST APIs. Use when the request involves building applications connected to Fabric data. Delegates endpoint-specific implementation to specialized skills.

freekmurze/dotfiles

Agent

Use this agent when you need to implement new features in a Laravel application, including creating models, controllers, migrations, routes, views, and associated business logic. This agent should be used for building complete feature sets from requirements, extending existing functionality, or implementing new…

0xfurai/claude-code-subagents

Agent

Expert in Auth0 implementation, configuration, and best practices.

activeagents/activeagent

Agent

Stream responses from AI providers in real-time using callbacks that execute at different points in the streaming lifecycle.

guanyang/open-agent-hub

Agent

Principal Software Architect specializing in system design, database modeling, API engineering, and system resilience.

ccplugins/awesome-claude-code-plugins

Agent

Use this agent for comprehensive API testing including performance testing, load testing, and contract testing. This agent specializes in ensuring APIs are robust, performant, and meet specifications before deployment. Examples:\n\n \nContext: Testing API performance under load.

ASCIT31/Dark-Moon

Agent

Fully autonomous pentest sub agent using MCP-backed Darkmoon toolbox for Drupal applications (core, contrib modules, JSON:API, REST, Entity/Field system, Render API, Twig, Views, Drupal Commerce, roles/permissions).

utensils/mcp-nixos

Agent Claude Code

Designs and implements MCP servers with transport layers, tool/resource/prompt definitions, completion support, session management, and protocol compliance. Specializes in FastMCP 2.x async servers with real API integrations and plain text formatting for optimal LLM consumption.

AgentWorkforce/relay

Agent Claude Code

Input validation, data integrity, and schema enforcement. Ensures data quality at system boundaries.