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dx-harness

Developer-experience friction auditing and fixing — slow onboarding, repeated manual setup steps, missing bootstrap/reset/seed scripts, undiscoverable conventions. Audits the repo, scores findings, scaffolds canonical fixes (bootstrap.sh, reset.sh, seed.sh, AGENTS.md, task-runner entries), then verifies the harness end-to-end in a scratch worktree against a 60-second time-to-first-commit target. Triggers on phrases like "audit dx", "fix dev friction", "time to first commit", "set up the harness", "I keep doing X manually", "every time I reset the db I have to...", and on new-repo bootstrapping. Even if the user doesn't say "DX" — if they describe a repeated manual chore in their dev loop, this skill applies.

skills/.experimental/dx-harness/SKILL.md

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Aug 15, 2026
License
MIT

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# DX Harness

Audits, scaffolds, and maintains the developer-experience harness of a repository. The harness is the meta-tooling that makes a dev loop fast: one-command bootstrap, one-command reset, one-command seed, discoverable conventions, agent-friendly entry points.

This skill exists because dev-experience attrition is real: harnesses rot, manual steps creep back in, conventions drift, and the cost is paid in micro-friction every day. The skill detects attrition systematically and applies canonical fixes.

## When to Apply

Trigger this skill when:

- A user describes a **repeated manual chore** ("every time I reset the db I have to re-register", "I always run these three commands before working")
- A user mentions **slow onboarding** or asks "how do I get this running"
- A new repo is being **bootstrapped** and needs a harness from day one
- A user explicitly asks to **audit DX** or **measure time-to-first-commit (TTFC)**
- A user asks to **fix** missing bootstrap/reset/seed scripts or AGENTS.md