mcp-server-go
mcp-server-go is a Go library for implementing an MCP (Model Context Protocol) server. It provides abstractions to define MCP tools/resources/prompts and to serve the MCP server over stdio via an implementation of the MCP protocol.
Score Breakdown
⚙ Agent Friendliness
🔒 Security
The provided materials do not mention TLS (stdio transport), auth, scopes, or secret-handling guidance. Tool handlers can perform side effects (e.g., HTTP/file/DB in examples), so the main security risk is that authorization and input validation are the developer's responsibility; the README demonstrates some input validation but does not document comprehensive safety controls.
⚡ Reliability
Best When
You want a lightweight Go-based MCP server running as a local process (stdio transport) with custom tools/resources and you can manage security and deployment around it.
Avoid When
You need standardized REST/HTTP semantics, discoverable OpenAPI specs, built-in auth/rate limiting, or provider-grade operational controls; these are not described in the provided materials.
Use Cases
- • Build local/embedded MCP servers that expose tools and resources to LLM clients
- • Provide typed tool inputs and structured tool outputs for LLM agents
- • Integrate application data/services (files, APIs, DB queries) into an MCP-compatible interface
- • Create reusable prompt templates for consistent LLM interactions
Not For
- • Public internet deployments without additional hardening (stdio MCP is not an HTTP API)
- • Use as a secure authentication/authorization gateway by itself
- • Long-running production services where uptime/SLA, rate limiting, and operational guarantees are required (not evidenced in provided content)
Interface
Authentication
No authentication mechanism is described for the MCP server transport. Example usage starts a stdio server without auth/authorization controls.
Pricing
Repository/license information is provided (MIT), but no pricing model is applicable/mentioned.
Agent Metadata
Known Gotchas
- ⚠ Transport is stdio; agents that expect HTTP endpoints may need special wiring in the host environment.
- ⚠ Examples cast argument types directly from request parameters (e.g., float64, string); handlers should defensively validate types to avoid panics.
- ⚠ Advanced MCP capabilities are noted as potentially incomplete due to active development; behavior/feature coverage may change.
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Scores are editorial opinions as of 2026-04-04.