agentbisect SKILL.md skillA
agentbisect from test-bit-sys/agentbisect is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add test-bit-sys/agentbisect/agentbisect@git:20261102.748a508Pins git:20261102.748a508 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- test-bit-sys/agentbisect
- Path
skills/agentbisect/SKILL.md- Versions recorded
- 1
- Latest version
- git:20261102.748a508, committed Nov 2, 2026
- Size
- 3,119 bytes
- Repository stars
- 3
- License
- MIT
Autonomous trajectory debugging and binary-search regression locator for AI coding agents. Enables agents to locate the exact step that broke tests and rewind the workspace to a clean state.
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
# AgentBisect Skill
Use this skill whenever an agent coding session encounters test failures, compilation errors, or broken functionality after multi-step autonomous modifications.
## Core Problem Solved
When agents execute 10 to 50 sequential steps, a subtle mistake at Step $k$ often causes compounding hallucinations in subsequent steps. Instead of scrapping the entire workspace or manually guessing which tool call introduced the bug, `AgentBisect` applies deterministic binary search over the session steps to isolate the first broken step in $\mathcal{O}(\log N)$ evaluations and rewinds the workspace.
---
## Available MCP Tools
### 1. `agentbisect_snapshot`
Creates a non-polluting shadow git snapshot before or after significant workspace edits.
```json
{
"summary": "Refactored database query to use connection pooling",
"files": ["src/db/connection.py"]
}
```
### 2. `agentbisect_bisect`
Executes automated binary search over the recorded steps to locate the exact step that caused a test regression.
```json
{
"test_command": "pytest tests/test_auth.py",
"timeout_seconds": 45
}
```
**Returns:**
- The first faulty step number and summary.
…Read the whole file at its exact version.
How to install
mdr add test-bit-sys/agentbisect/agentbisect@sha256:279d460555d25408The line at the top of this page pins the label git:20261102.748a508, 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_l7ztf6w62has7mjb)
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Versions
The registry has recorded 1 version of this file, committed on Nov 2, 2026.
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 (3119 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
test-bit-sys/agentbisect · 3 stars · license MIT · pushed 2026-11-07 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_l7ztf6w62has7mjb GET https://markdownregistry.com/api/v1/resolve?ref=test-bit-sys/agentbisect/agentbisect GET https://markdownregistry.com/api/v1/blob/279d460555d25408d405614cf2bf0853ab11242a74fc5d6c6e4033eae9f59077
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.