go-sdk
Official Go SDK for building MCP servers and clients
The Lens
Official Go SDK for building MCP servers and clients. Handles the JSON-RPC transport, tool registration, resource management, and OAuth primitives so you write the business logic.
Standard Go module install. Well-documented with example implementations. Supports the full MCP specification including streaming and sampling.
Maintained by the Model Context Protocol organization. Free, open source. If you're building MCP servers in Go, this is the canonical choice. Equivalent to FastMCP for Python but for the Go ecosystem.
Free vs Self-Hosted vs Paid
fully freeFree Tier
The MCP server itself is completely free and open source. Install it, configure your MCP client, and use it without any cost.
Self-Hosted
Runs locally or on your own infrastructure. No external dependencies beyond the service it connects to.
Paid
No paid tier. The MCP server is free. The underlying service may have its own pricing.
Free and open source.
Get tools like this every Wednesday
One featured tool, three on the radar. No fluff.
A low score is not a verdict on quality. Young and niche tools start low by design. How we calculate scores
Trust Signals
About
- Owner
- modelcontextprotocol (Organization)
- Stars
- 4,798
- Forks
- 476
Explore Further
More tools in the directory
openclaw
Your own personal AI assistant. Any OS. Any Platform. The lobster way. 🦞
383.0k ★everything-claude-code
The agent harness performance optimization system. Skills, instincts, memory, security, and research-first development for Claude Code, Codex, Opencode, Cursor and beyond.
230.2k ★hermes-agent
The agent that grows with you
215.6k ★