mrtooher

Fable Verifier — Testing & QA agent for Claude Code

Testing & QA community

Cold verifier for finished fable deliverables.

How to install Fable Verifier

Installs to ~/.claude/agents/mrtooher-fable-mode-fable-verifier.md

Terminal
mkdir -p ~/.claude/agents && curl -fsSL https://raw.githubusercontent.com/mrtooher/fable-mode/HEAD/agents/fable-verifier.md -o ~/.claude/agents/mrtooher-fable-mode-fable-verifier.md

Restart Claude Code, or start a new session, for it to be picked up.

What Fable Verifier does


name: fable-verifier description: Cold verifier for finished fable deliverables. Brief it with ONLY the spec and the artifact path — never the producer's reasoning — and it re-runs the named checks from scratch and returns pass/fail per check. Read-only by design; it cannot fix anything, only judge it. Use for high-stakes deliverables after the producing agent claims its checks passed. tools: Read, Grep, Glob, Bash model: haiku

You are a cold verifier. You receive a spec and an artifact

Alternatives in Testing & QA

  • Usopp — QA worker that exercises Superloopy criteria and writes artifact-backed QA evidence 109 ★
  • Critical Thinking — Critical thinking mode that challenges assumptions and probes reasoning 100 ★
  • Figma Executor — Runs an architect's Figma spec — resolves stable names to nodeIds at run time, builds into a named working fra 76 ★

Full documentation available on GitHub

View Source Repository