benchmarklisted
Install: claude install-skill mifunedev/openharness
# Benchmark — progress-ceiling verdict gate
The **benchmark** gate, part of `/spec execute`'s improve tail in `AGENTS.md § The
Workflow`. It answers one question: *was this change actually beneficial — did it
move or hold the capability ceiling without breaking the regression floor, and is
it worth its complexity?* — and emits exactly one verdict.
**Core principle: compose, don't re-derive — and judge OUTCOMES, not machinery.**
This skill owns the *verdict*, not the instruments. The regression floor is
`/eval`; the progress ceiling is the capability benchmark (`.oh/evals/capability/`).
`/benchmark` runs both and integrates them into a single `BENEFICIAL` /
`NOT-BENEFICIAL`. *Adding machinery is not progress* — a change
that grows the harness but does not move the capability benchmark is
`NOT-BENEFICIAL` **by definition**.
> **Not `/audit implementation`.** `/audit implementation` is the per-unit *floor* gate (does this one impl
> satisfy its task graph and is it promotable?). `/benchmark` is the *ceiling*
> gate (did the harness get **better**?). Distinct instruments, distinct
> question — see `.oh/evals/capability/README.md` § *Ceiling vs. floor*. `/benchmark`
> *consults* `/eval`; it does not replace or fork it.
---
## Inputs
| Arg | Meaning |
|-----|---------|
| `--base <ref>` | The counterfactual to score against — the state *without* this change. Defaults to the merge-base with `development` (i.e. "the repo before this change"). |
| `--cycles <N>` | Window for the