NazarKalytiuk/tarn MCP server](https://glama.ai/mcp/servers/NazarKalytiuk/tarn/badges/score.svg)](https://glama.ai/mcp/servers/NazarKalytiuk/tarn) 🦀 🏠 🍎 🪟 🐧 - CLI-first API testing tool with structured JSON failures (failure_category, error_code, hints) so AI agents can branch on the taxonomy without parsing stderr. MCP tools: tarn_run, tarn_validate, tarn_fix_plan, tarn_inspect, tarn_rerun_failed, and more. Tests are .tarn.yaml. Single static binary (musl), MIT.
Getting started
Add tarn to your MCP-capable client — Claude Code, Cursor, Codex, and others — by following the setup at the source, which documents the exact command, configuration, and any required API keys.
