mkl-bisect-regression SKILL.md skillA
This file is byte-identical to the first copy the registry indexed, one of 3 indexed copies. Same content hash, so the same checks give both the same grade.
mkl-bisect-regression from 00200200/maintainer-skills-lab is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add 00200200/maintainer-skills-lab/mkl-bisect-regression@git:20261016.4de5604Pins git:20261016.4de5604 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- 00200200/maintainer-skills-lab
- Path
skills/mkl-bisect-regression/SKILL.md- Versions recorded
- 2
- Latest version
- git:20261016.4de5604, committed Oct 16, 2026
- First version recorded
- Oct 6, 2026
- Size
- 3,132 bytes
- Repository stars
- 48
- License
- MIT
Pinpoint regressions using automated git bisect test scripts with zero prompt token waste.
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
# Pinpoint regressions with automated git bisect
When a bug or regression appears between releases or commits, never manually read commit diffs across history. Reading hundreds of commits burns tens of thousands of LLM prompt tokens, causes hallucinated attributions, and exhausts context.
Instead, leverage Git's binary search: `git bisect run <test_script>`. The local shell automatically tests commits in $\mathcal{O}(\log_2 N)$ steps with zero intermediate tokens sent to the model. Inspect only the single culprit commit diff.
## 1. Author a standalone bisect test script
Author an executable script (`bisect_test.sh`) returning standard Git exit codes:
- **`0` (Good)**: Commit is good (bug absent).
- **`1` through `124`, `126` through `255` (Bad)**: Commit is bad (regression observed).
- **`125` (Skip)**: Commit untestable (broken build, syntax error unrelated to bug). Git picks an adjacent commit.
### Flakiness and build mitigation in the script
1. **Trap compilation/build failures**: Return `125` if compilation or dependencies fail so Git skips intermediate broken commits.
2. **Loop flaky checks**: If timing-sensitive, run the test 3 to 5 times. If any run fails, exit `1`.
…Read the whole file at its exact version.
How to install
mdr add 00200200/maintainer-skills-lab/mkl-bisect-regression@sha256:ae579239bbdc74f2The line at the top of this page pins the label git:20261016.4de5604, 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.
[](https://markdownregistry.com/a/art_zod4z6fcxlmrmnxi)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 2 versions of this file, between Oct 6, 2026 and Oct 16, 2026, about one every 10 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261016.4de5604 latest | 2026-10-16 | 4de5604 | 3,132 B | A | view · diff |
| git:20261006.ca56570 | 2026-10-06 | ca56570 | 4,789 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (3132 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
00200200/maintainer-skills-lab · 48 stars · license MIT · pushed 2026-11-07 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_zod4z6fcxlmrmnxi GET https://markdownregistry.com/api/v1/resolve?ref=00200200/maintainer-skills-lab/mkl-bisect-regression GET https://markdownregistry.com/api/v1/blob/ae579239bbdc74f27665cbadafc0705db423677b36b623238460226ac991c1c2
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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