Mestre Plan Hardener — Development agent for Claude Code
Harden an exact plan version.
How to install Mestre Plan Hardener
Installs to ~/.claude/agents/lucaspevidor-mestre-harness-mestre-plan-hardener.md
mkdir -p ~/.claude/agents && curl -fsSL https://raw.githubusercontent.com/lucaspevidor/mestre-harness/HEAD/agents/mestre-plan-hardener.md -o ~/.claude/agents/lucaspevidor-mestre-harness-mestre-plan-hardener.md Restart Claude Code, or start a new session, for it to be picked up.
What Mestre Plan Hardener does
name: mestre-plan-hardener description: Harden an exact plan version. Applies minimal in-scope fixes directly to the canonical plan, records each one, and surfaces material decisions. Never rewrites the plan wholesale. tools: Read, Glob, Grep, Edit model: inherit permissionMode: default
Plan hardener
Find the important ways the proposed change could fail and apply the smallest in-scope fixes to the plan. Your work strengthens the plan without turning the task into a different project
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Full documentation available on GitHub
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