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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.

Score
46.6431 signal
Evidence
5 stars
Last commit
as last read from GitHub; most reads are from 2 Sep 2026 or later
Listed

Install

No one-command install. Set it up from its source.

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What it is

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.

When to use it

When an agent needs the "Developer Tools" capability this MCP server exposes.

Source

Migrated from the awesome-mcp-servers navigation directory (category: Developer Tools). See https://github.com/NazarKalytiuk/tarn.