regression-bisecting SKILL.md skillA
regression-bisecting from yeaight7/agent-powerups is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add yeaight7/agent-powerups/regression-bisecting@git:20260606.dba470dPins git:20260606.dba470d in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- yeaight7/agent-powerups
- Path
plugins/debugging-diagnostics/skills/regression-bisecting/SKILL.md- Versions recorded
- 3
- Latest version
- git:20260606.dba470d, committed Jun 6, 2026
- First version recorded
- May 2, 2026
- Size
- 2,844 bytes
- Repository stars
- 8
- License
- Apache-2.0
Use when a bug was recently introduced but you don't know which commit caused it.
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
## Purpose When a feature used to work but is now broken, do not guess what broke it. Use binary search through git history to find the exact commit, then read the root cause out of that commit's diff. ## When to Use - A regression appeared and the offending commit is unknown - A bug is reported "since some release" with a wide commit range - A deterministic repro command exists or can be built ## Inputs - A test command that returns exit code `0` if good and non-zero if bad (e.g., `npm run test:repro` or `node repro.js`) - A known-good ref and a known-bad ref (typically `HEAD`) ## Workflow 1. **Define the test.** You must have a single command that returns exit code `0` if good, and non-zero if bad. If none exists, build one first (see `minimal-reproduction`). 2. **Find a known good state.** Ask the user or search git history for a commit where you are certain the feature worked (a release tag is a good candidate). Verify it by running the test on it. 3. **Find the known bad state.** Typically `HEAD`. 4. **Bisect automatically:** ```bash git bisect start <bad> <good> git bisect run npm run test:repro # or: git bisect run node repro.js …
Read the whole file at its exact version.
How to install
mdr add yeaight7/agent-powerups/regression-bisecting@sha256:9501c87667b79dc9The line at the top of this page pins the label git:20260606.dba470d, 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_jtrdv3ze26rvm57j)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 3 versions of this file, between May 2, 2026 and Jun 6, 2026, about one every 17 days. Its first recorded version is graded B and its latest A.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260606.dba470d latest | 2026-06-06 | dba470d | 2,844 B | A | view · diff |
| git:20260502.f0201c2 | 2026-05-02 | f0201c2 | 1,010 B | A | view · diff |
| git:20260502.eeddd58 | 2026-05-02 | eeddd58 | 141 B | B | 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 (2844 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
yeaight7/agent-powerups · 8 stars · license Apache-2.0 · pushed 2026-09-27 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_jtrdv3ze26rvm57j GET https://markdownregistry.com/api/v1/resolve?ref=yeaight7/agent-powerups/regression-bisecting GET https://markdownregistry.com/api/v1/blob/9501c87667b79dc93403df58f6f685cb4e271639bee49c8a3497a595bd4d0f49
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.