Code, Build and Evaluate agents - excellent Model and Skills/MCP/ACP/A2A Support

Plan-then-build AI coding for Claude Code & Codex CLI — you approve the plan before the model writes a line of code. SPEC → PLAN → TEST → CODE → REVIEW → LEARN

The AI toolkit for building reliable browser automations

End-to-end, code-first tutorials for building production-grade GenAI agents. From prototype to enterprise deployment.

MCP Server Framework and Tool Development library for building custom capabilities into agents.

A Model Context Protocol (MCP) client library and debugging toolkit in Rust. This foundation provides both a production-ready SDK for building MCP integrations and the core architecture for an interactive debugger.

🌋 Build AI agents that seamlessly combine LLM reasoning with real-world actions via MCP tools — in just a few lines of TypeScript.

The agent IDE that builds itself

Collaborative multi-agent AI coding workspace: aggregate sessions from Claude Code, Codex, OpenCode, Pi, Grok Build, etc. Desktop app, self-hosted server, or Docker.

A Go framework for building production agent systems with graph workflows, tools, memory, A2A, AG-UI, MCP, evaluation, and observability.

One-stop handbook for building, deploying, and understanding LLM agents with 60+ skeletons, tutorials, ecosystem guides, and evaluation tools.

MCP Server for the Bitrise API, enabling app management, build operations, artifact management and more.

Agent skills and an AGENTS.md workflow template — isolate in worktrees, build to a service layer, prove with evidence, ship with before/after proof and Greptile review loops. For Claude Code, Cursor, and Codex.

Fast, flexible, and open tooling for building intelligent workflows with Cypress.

A skill for coding agents that build, review, and refactor Web UI that should be easier for humans, screen readers, browser automation, Playwright tests, and AI agents to understand and operate.

Build an agent harness and control it end-to-end. Open-source SDK for production AI agents in Python & TypeScript - any model, any cloud.

Build Secure and Compliant AI agents and MCP Servers. YC W23

A kit for building with AI agents and also the engineering patterns around it.

Building a Senior Staff Engineer with Sub-Agent Teams in Claude Code

Your Intelligence, Orchestrated. Every builder. Every team. Every agent. For Everyone.

An IOS Simulator Skill for ClaudeCode. Use it to optimise Claude's ability to build, run and interact with your apps, and to proxy xcodebuild to save token and context wastage.

A builder, not just a researcher. Agent skills that turn top-grossing app patterns into native-quality mobile screens.

Semi-Structured Agentic Framework. Workflows build themselves as agents discover what needs to be done, not what you predicted upfront.

MCP server for TouchDesigner — build, wire, and debug networks with AI. Plus git-diffable externalization.