root-cause-regression SKILL.md skillA
root-cause-regression from flutter/dart-intellij-third-party is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add flutter/dart-intellij-third-party/root-cause-regression@git:20260826.d57f620Pins git:20260826.d57f620 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- flutter/dart-intellij-third-party
- Path
.agents/skills/root-cause-regression/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260826.d57f620, committed Aug 26, 2026
- Size
- 2,109 bytes
- Repository stars
- 27
- License
- BSD-3-Clause
Investigates a GitHub issue reporting a regression, analyzes recent commits, and identifies possible root cause culprits. Use this when the user asks to find the cause of a regression or bug from an issue.
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
# Root Cause Regression Analysis
This skill guides you through investigating a GitHub issue to find the likely commit that caused a regression.
## Steps
1. **Read the Issue**:
* **Primary**: Use the `github` MCP server (`issue_read` or equivalent) to fetch the details of the issue.
* **Fallback**: If the `github` MCP server is not available, try using the `gh` CLI (e.g., `gh issue view <number>`) or ask the user to paste the issue description into the chat.
* Understand the symptoms of the regression and when it started happening.
2. **Identify the Timeframe**: Determine the approximate timeframe when the regression was introduced based on the issue description, comments, and reported version. If the timeframe isn't clear, ask the user or look at the repository's recent releases.
3. **Fetch Recent Commits**: Use `search_commits` or `list_commits` from the `github` MCP server. If unavailable, fall back to local git commands (e.g., `git log --since="<date>" --until="<date>"`) to fetch commits within the suspected timeframe.
4. **Analyze Commits**: Review the commit messages, changed files, and diffs for the suspected commits.
…Read the whole file at its exact version.
How to install
mdr add flutter/dart-intellij-third-party/root-cause-regression@sha256:ac11c81c6147577eThe line at the top of this page pins the label git:20260826.d57f620, 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_hy4pkesmq5mk6scn)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Aug 26, 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 (2109 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
flutter/dart-intellij-third-party · 27 stars · license BSD-3-Clause · pushed 2026-10-31 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_hy4pkesmq5mk6scn GET https://markdownregistry.com/api/v1/resolve?ref=flutter/dart-intellij-third-party/root-cause-regression GET https://markdownregistry.com/api/v1/blob/ac11c81c6147577edca2dc0f91bd924e5747f5cfb39ee636116caad604934303
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.