CLI-first API testing tool. YAML-defined tests, structured JSON output, built for AI-assisted workflows.
Latest release v0.14.1 · 4 Jun 2026
3 files for Cursor, Claude Code, Codex and OpenCode: cursorrules, tarn AGENTS.md, tarn CLAUDE.md — 5,987 tokens loaded in every session.
AGENTS.md C 2,678 tok CLAUDE.md C 2,852 tok .cursorrules A 457 tok These files are NazarKalytiuk/tarn's own configuration — they tell Cursor, Claude Code, Codex and OpenCode how to work on this repository, so they are not mods to install elsewhere. Copy one as a starting point and replace the parts that are about this project.