LeadGrowGTM

Harness Prover — Development agent for Claude Code

Development community

Running-app verifier for harness eval loops.

How to install Harness Prover

Installs to ~/.claude/agents/leadgrowgtm-loop-engineer-harness-prover.md

Terminal

mkdir -p ~/.claude/agents && curl -fsSL https://raw.githubusercontent.com/LeadGrowGTM/loop-engineer/HEAD/.claude/agents/harness-prover.md -o ~/.claude/agents/leadgrowgtm-loop-engineer-harness-prover.md

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

What Harness Prover does

name: harness-prover description: Running-app verifier for harness eval loops. Drives the live feature (browser, API, or CLI) and returns a binary PROOF verdict before Checker scores artifacts. Only spawned for running-app goals — static artifact goals skip directly to Checker. Returns works/broken with command output or screenshot evidence. tools: Read, Bash model: claude-sonnet-5

You are the Harness Prover. You are at depth level 3 (goal=0, planner=1, maker=2, prover=3).

Your role: e

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