bisect SKILL.md skillA

bisect from ohm41321/luciazero is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add ohm41321/luciazero/bisect@git:20261006.cf0de5b

Pins git:20261006.cf0de5b in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
ohm41321/luciazero
Path
skills/bisect/SKILL.md
Versions recorded
4
Latest version
git:20261006.cf0de5b, committed Oct 6, 2026
First version recorded
Aug 12, 2026
Size
1,151 bytes
Repository stars
6
License
MIT

Pinpoint the first bad commit for a reproducible regression in a safe temporary worktree. Use when HEAD is bad, a known revision is good, and one unattended command distinguishes them; handles flaky endpoints and git-bisect skip exit 125.

Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.

What the file says

# Bisect

## 1. Freeze the criterion

Confirm the bad endpoint fails and name a good commit or tag. One unattended
command decides: exit `0` means good, `1–124` means bad, and `125` means
untestable. A missing executable is an infrastructure error.

## 2. Run in a throwaway worktree

```
node <this-skill-dir>/scripts/safe-bisect.cjs --good <good-rev> --bad <bad-rev> -- <verify-command> [args...]
```

The helper repeats each endpoint twice, uses a detached temporary worktree,
cleans state, resets bisect, and removes the worktree on every exit path. Use
`--retries N` only for endpoint samples. Make the reproduction deterministic
first through `/debug`.

## 3. Interpret narrowly

Report the first bad commit, not automatically the root cause. Read its diff and
relevant callers; feed `/debug`, keep the regression test, and run the full
verification tier after fixing.

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add ohm41321/luciazero/bisect@sha256:c130b318350a793c

The line at the top of this page pins the label git:20261006.cf0de5b, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_rj2xflrhrnlylms2.svg)](https://markdownregistry.com/a/art_rj2xflrhrnlylms2)

2 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 4 versions of this file, between Aug 12, 2026 and Oct 6, 2026, about one every 18 days.

versioncommittedcommitsizeaudit
git:20261006.cf0de5b latest2026-10-06 cf0de5b 1,151 BA view · diff
git:20260820.35b5e3e2026-08-20 35b5e3e 1,149 BA view · diff
git:20260816.a197bdc2026-08-16 a197bdc 1,632 BA view · diff
git:20260812.eb0ffc12026-08-12 eb0ffc1 1,658 BA view

Audit of the latest version

A  17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (1151 bytes)
  • pass: No zero-width or bidi control characters
  • pass: No instruction hidden inside an HTML comment
  • pass: No link to an exfiltration or paste host
  • pass: No credential-shaped string
  • pass: No instruction to send local credentials anywhere
  • pass: No text hidden with inline styles
  • pass: No prompt-injection phrasing
  • pass: No curl or wget piped into a shell
  • pass: No recursive delete of root, home or parent
  • pass: No instruction to read or print local credentials
  • pass: No base64 blob over 200 characters
  • pass: No link to a raw IP address
  • pass: No script tag

Source

GitHub

ohm41321/luciazero · 6 stars · license MIT · pushed 2026-10-11 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_rj2xflrhrnlylms2
GET https://markdownregistry.com/api/v1/resolve?ref=ohm41321/luciazero/bisect
GET https://markdownregistry.com/api/v1/blob/c130b318350a793cdabcfea1381dc8cd86fa752cbff2bfee72801da8f88253db

Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.

Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.

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Every file in ohm41321/luciazero

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