harness

Install root role on a session. The user's base session

Install build role on a session. Takes one unit of work from directive to a verified, well-architected change.

Install verify role on a session. The fast independent check that a claimed artifact is actually done — spawned proactively before any parent reports done, opens a PR, deploys, or publishes.

Install build role on a session. Takes one unit of work from directive to a verified, well-architected change.

Install root role on a session. The user's base session

Install verify role on a session. The fast independent check that a claimed artifact is actually done — spawned proactively before any parent reports done, opens a PR, deploys, or publishes.

Install QA role on a session. The tough batch gate before deploy — stand the assembled system up in a dev environment and try hard to break it, through the project's own test discipline.

Guidance for updating agent-facing files (skills, AGENTS.md, subagent definitions) when you discover they are wrong, incomplete, or stale. Use when you've solved a problem that revealed a gap, or when the user says to update a skill, AGENTS.md, or agent. The trigger is friction; you learned something the knowledge base should have told you

Implement a vertical slice from SLICES.md end-to-end using TDD. Use when user wants to code a slice of a project or mentions "complete slice"

Decompose a PROJECT_BRIEF.md into vertical, TDD-ready implementation slices. Each slice is independently demoable. Use when user wants to break down a project into slices

Install deploy role on a session. Ships a verified batch through the project's own deploy skill.

Install harness-engineer role on a session.

Take a brief idea and produce a complete PROJECT_BRIEF.md as if the user wrote it on their best day. Covers features, fixes, infra, and full products alike. Use when user wants to define a project, scope a feature, plan a complex fix, or mentions "project brief" or "new project"

Refine any plan/artifact through rigorous, structured questioning until every decision is resolved. Use when user wants to stress-test a plan, iterate on a brief or be grilled on a PROJECT_BRIEF.md