Strategic planning with auto-calibrated detail, decision rationale, and dependency ordering. Use when starting a new feature, bug fix, refactor, or any non-trivial work. Produces a plan document with tasks, reasoning, and acceptance criteria. Triggers: plan, planning, create plan, implementation plan, feature plan…
Focused review of code, documents, or architecture — one deep pass with evidence-based findings and clear verdict. Auto-detects what you're reviewing: branch diff, PR, file path, plan, brainstorm, or spec. One reviewer that reads carefully beats nine that skim. Triggers: review, code review, review PR, review diff…
Deep reasoning for complex decisions — expert panel simulation, devil's advocate, what-if scenarios, and structured tradeoff analysis. Use when a decision has high stakes, multiple valid approaches, or you need to stress-test your thinking. Triggers: think, think through, analyze, expert panel, devil's advocate, what…
You are the Scout, responsible for analyzing and evaluating source signals gathered from RSS feeds, Gmail newsletters, Hacker News, and the user's personal captures.
You are the Voice Checker, responsible for ensuring all generated content matches the user's authentic writing voice. You are meticulous about jargon detection, tone analysis, and voice consistency.
Use when the user asks to run Claude Code CLI (claude, claude resume) for review, analysis, implementation, refactoring, debugging, or follow-up specifically through Claude Code.
Guided 7-phase blog post writing. Use when writing a long-form blog post from scratch or from a pipeline-generated outline. Triggers: write post, blog post, write article.
Drafts repo doctrine documents — root AGENTS.md, subtree AGENTS.md, and the paired docs/agents-md-standard.md — adapted to a specific repository's mission, stack, and verification surfaces. Called by marvin:harness-up during Phase 4. Knowledge-grounded in harness-engineering conventions (OpenAI harness-engineering…
Context engineering agent. Builds and maintains structured knowledge docs — CLAUDE.md files, knowledge bases, onboarding guides. Use when creating or reorganizing context documents that AI will consume repeatedly.
Reviews SKILL.md and agent .md files against the toolkit's quality bar. Grades A-F based on methodology anchoring, safety mechanisms, and CONVENTIONS.md compliance. Use when creating or upgrading skills/agents, or for periodic quality audits of the toolkit.
Survey a repo and ground externally on the relevant parts of the internet. Local manifest scan + CLAUDE.md/AGENTS.md + recent git activity, then external grounding via WebSearch, WebFetch, and gh — synthesized into a terse, dated, sourced briefing cached at docs/ground/ .md with a 7-day freshness window. Composable…
Replicate a known-good Claude Code harness onto another machine or into another repo. Clones or updates the user's config repo, verifies it against the shipped conventions, reinstalls plugin marketplaces, and reports drift between two machines. Use when setting up a second machine, onboarding a new laptop, recovering…
Install harness-engineering doctrine into a repository — short root AGENTS.md, docs/ taxonomy (plans, ADRs, solutions), verification rules, and project-scoped Claude Code plugins. Works on empty repos (greenfield scaffold), existing repos (survey + upgrade), and ports of existing systems. Distinct from marvin:scaffold…