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UHUltimate Harness

Ultimate Harness

The agent is fungible. The discipline is not. UH turns agentic coding work into schema-backed missions, supervised runs, verified results and recorded human decisions, whichever runtime does the work.
Install and first runHow it worksRoad to 1.0

What UH is

Section titled “What UH is”

Ultimate Harness (uh, npm @agenticengineeringagency/ultimate-harness) is a control plane that sits above coding agents. It does not write code itself. It standardizes what happens around an agent run:

request / issue / spec
  -> workflow profile          which procedure applies
  -> mission packet            what exactly to do, under which limits
  -> runtime adapter           Codex, Command Code, oh-my-pi, Hermes, Anthropic, ACP, ...
  -> supervised run            sandbox or worktree, tool guard, stall and loop detection
  -> verification              deterministic checks, then an optional model judge
  -> independent review        a second agent grades the report against the request
  -> promotion / land          a recorded human decision moves work into canonical state

Every step writes plain YAML or NDJSON under .harness/, validated by a versioned Zod schema. No daemon, no hidden state: if uh status cannot see it, it did not happen.

Portable discipline

Swap Codex for oh-my-pi or Command Code without losing specs, missions, sandboxes, audit trail or approval gates.

Supervised execution

A tool guard, fleet admission, route attestation, stall and loop probes keep a worker inside what it was assigned.

Evidence, not vibes

Diffs, receipts, verification and review records link every change to a prompt, model, sandbox and approver.

Run control

uh ps, wait, steer, kill, queue, land and the hive operate live runs and teams from the project root.

Where to go next

Section titled “Where to go next”
Mental modelThe nouns: project, workflow, mission, run, verification, promotion.
Architecture mapWhich module owns what, and how the CLI, harness, schemas and adapters connect.
Code map and explorerGenerated from a knowledge graph of every file and symbol: layers, a guided tour, hotspots, and an interactive graph.
Road to 1.0Open PRs, branch cleanup and the coordinated merge plan.
Technical debt registerWhat to pay down before and after 1.0.