example-go-mcp-server
Provides an example Model Context Protocol (MCP) server in Go that exposes basic calculator tools: add, sub, mul, and div (with division-by-zero protection). Includes a Cobra-based CLI entrypoint to run the MCP server and logs tool inputs/outputs to a temp-file log in JSON-lines format.
Score Breakdown
⚙ Agent Friendliness
🔒 Security
No auth is described, so access control is unclear. It logs tool inputs/outputs (potentially sensitive values if generalized beyond arithmetic). TLS/encryption and transport security are not documented in the README. Dependencies are only listed, not audited in the provided content.
⚡ Reliability
Best When
You want a minimal MCP server example to integrate and verify MCP tool-calling flows for arithmetic operations.
Avoid When
You need strong security guarantees (authentication/authorization), strict operational controls, or high assurance around error semantics and logging privacy for untrusted environments.
Use Cases
- • Demonstration of building MCP servers in Go
- • Sandboxing simple arithmetic tool calls for agent testing
- • Low-stakes examples for tool schema/parameter handling via MCP
Not For
- • Production-grade financial/scientific computation requiring robust numeric handling beyond basic float operations
- • Use as a secure remote service without additional transport/auth controls
- • General-purpose public API for untrusted users
Interface
Authentication
No authentication/authorization mechanism is described for the MCP server in the provided README.
Pricing
This appears to be an open-source example project; no pricing model is described.
Agent Metadata
Known Gotchas
- ⚠ No authentication is mentioned; using it against untrusted clients may be unsafe.
- ⚠ Logging is enabled to a file under the temp directory; agents running repeatedly may produce large logs.
Alternatives
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Scores are editorial opinions as of 2026-04-04.