A coding agent with no harness does what any model does by default: copies whatever pattern is closest in the repo, skips the tests nobody asked for, and burns tokens on the wrong files. The harness is what turns that into a colleague.

What you're aiming for

• –Every engineer's agent producing the same architecture, not five styles.
• –A junior with an agent shipping at the level of your senior.
• –Knowing what a task cost before the invoice.
• –One playbook the whole team uses instead of private prompt folders.

The harness we build

The harness is everything between the model and your codebase.

• –Skills and playbooks: your conventions encoded so the agent reads them before it writes.
• –Guardrails: what it can run, what it can touch, what needs a human.
• –Evals: a suite that tells you when a model update made things worse.
• –Observability: every step logged, every failure traceable.
• –Cost control: budgets per task, and the numbers to back them.

What we've shipped this way

Pilot's harness is the one we ship to ourselves: quality gates, autopilot rules, retry ladders and a cost ledger per issue. Navigator, our open-source Claude Code plugin, is the playbook layer of that harness and is on GitHub.

How to start

We start from your repo and your team's actual agent sessions, not from a template. Scope and price are fixed before we build.