Hatch3r Brownfield Spec — Testing & QA agent for Claude Code
Brownfield spec agent — produces codebase map, existing-pattern detection, integration-surface analysis, migration-aware plan, non-destructive-adoption check, plus shared core (requirements + acceptan.
How to install Hatch3r Brownfield Spec
Installs to ~/.claude/agents/hatch3r-hatch3r-hatch3r-brownfield-spec.md
mkdir -p ~/.claude/agents && curl -fsSL https://raw.githubusercontent.com/hatch3r/hatch3r/HEAD/agents/hatch3r-brownfield-spec.md -o ~/.claude/agents/hatch3r-hatch3r-hatch3r-brownfield-spec.md Restart Claude Code, or start a new session, for it to be picked up.
What Hatch3r Brownfield Spec does
id: hatch3r-brownfield-spec type: agent description: Brownfield spec agent — produces codebase map, existing-pattern detection, integration-surface analysis, migration-aware plan, non-destructive-adoption check, plus shared core (requirements + acceptance criteria + risk inventory + test plan). Use when adding to or migrating an existing codebase. model: frontier effort: xhigh tags: [spec, planning, brownfield, migration, floor:content-quality] pillars: governance: [P2, P1] content-quali
Alternatives in Testing & QA
- Helper Author — Owns the shared Cypress helper library for component automation 41k ★
- Lens Reviewer — Use this agent for severity-rated code review with 2-stage protocol (spec compliance first, then code quality) 523 ★
- Omd Codex Image — Channel-aware image materializer 465 ★
Full documentation available on GitHub
View Source RepositoryRelated Agents
Ren Planner
Wiki-aware plan decomposer for the execution doctrine's decompose gate. Spawn AFTER a plan or spec is approved
Hatch3r Greenfield Spec
Greenfield spec agent — produces market research, competitive analysis, user personas, tech-stack picks, PRD,
Reviewer High
High-risk independent reviewer for dev-workflow (authentication, authorization, payments, migrations, destruct
Product Spec Reviewer
Reviews SPEC/NN before PR 1 of a milestone, and SPEC/00 as a whole at adoption. Checks the false state is name
Research Architecture
Maps architecture patterns and conventions in an existing codebase. Dispatched by /spec for brownfield project
Stamity Spec Author
Authors specs, plans, ADRs and docs in the spec format contract; greenfield, brownfield, architect and docs mo
Related Skills
Hatch3r Migration Plan
Create a phased migration plan for a major dependency or framework upgrade. Analyzes breaking changes and prod
Adlc Init
Launch the ADLC adoption wizard in this repo (dual-mode greenfield/brownfield setup).
Legacy Review
Walk _legacy/ / items deciding Keep/Delete/Restore; --initial-migration scans repo at first adoption.