UI over MCP. Create next-gen UI experiences with the protocol and SDK!

C++ MCP SDK - build Model Context Protocol (MCP) servers and clients in C++ / CPP. Enterprise-grade security, observability, connectivity. Stdio, HTTP+SSE, Streamable HTTP, WebSocket, TCP transports. Bindings for Python, TypeScript, Go, Rust, Java, C#.

The Rust SDK for building coding agents. Tools, streaming, graph, sub-agent orchestration, MCP — as composable functions

Create AI Agents in a No-Code Visual Builder or TypeScript SDK with full 2-way sync. For shipping AI assistants and multi-agent AI workflows.

Computer-Use SDK for E2E QA Testing

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.

An open-source, code-first Go toolkit for building, evaluating, and deploying sophisticated AI agents with flexibility and control.

Model Context Protocol management suite/factory. An MCP that can generate and manage other local MCPs in multiple languages. Uses the official SDKs for code gen.

MCPSharp is a .NET library that helps you build Model Context Protocol (MCP) servers and clients - the standardized API protocol used by AI assistants and models.

a lib to build MCP clients and MCP servers in Clojure(script)

Qt C++ library for working with AI/LLM Providers and MCP

JavaScript in-page GUI agent. Control web interfaces with natural language.

Feedback widget with screenshots, annotations, and AI triage

Astrid is a portable, capability-secure operating system for composable software.

Trigger.dev – build and deploy fully‑managed AI agents and workflows

Building blocks for frontier OpenAI agents in Rust. Nanocodex empowers you with Codex-level performance anywhere.

C# coding-agent harness (.NET 10, Microsoft Agent Framework) — sessions, tools, permissions, providers, MCP, plugins

🚀Apache RocketMQ build in Rust🦀. Faster, safer, and with lower memory usage. ⭐ Star to support our work❤️!

Real time communication for agents. Wake on message, channels, DMs and actions. Useful for orchestrating agents.

Control 1 or more machines using computer use tools that integrates with your agents

Multi-language agent runtime and library for execution scope management, lifecycle events, and middleware on tool and LLM calls.

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

🌐Web Agent Protocol (WAP) - Record and replay user interactions in the browser with MCP support

Skybridge is a full-stack TypeScript framework for MCP Apps and ChatGPT Apps. Type-safe. React-powered. Platform-agnostic.