Pester Failure Analysis
PowerShell/PowerShell
Investigates failing Pester tests in PowerShell CI jobs by following a six-step workflow from pull request status to documented fix recommendations.
Fix bugs, crashes, errors, or failing tests. An agent skill from av/mi.
Install Debug
$ npx skills add av/mi --skill debug -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install av/mi debug --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/av/mi.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/debug .claude/skills/debug && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "debug" agent skill from https://github.com/av/mi/tree/master/skills/debug into .claude/skills/debug/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "debug", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/av/mi/tree/master/skills/debugType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add av/mi --skill debug -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install av/mi debug --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/av/mi.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/debug .agents/skills/debug && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "debug" agent skill from https://github.com/av/mi/tree/master/skills/debug into .agents/skills/debug/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "debug", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add av/mi --skill debug -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install av/mi debug --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/av/mi.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/debug .cursor/skills/debug && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "debug" agent skill from https://github.com/av/mi/tree/master/skills/debug into .cursor/skills/debug/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "debug", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/av/mi.git --path skills/debug--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add av/mi --skill debug -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install av/mi debug --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/av/mi.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/debug .gemini/skills/debug && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "debug" agent skill from https://github.com/av/mi/tree/master/skills/debug into .gemini/skills/debug/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "debug", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install av/mi debugInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add av/mi --skill debug -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/av/mi.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/debug .github/skills/debug && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "debug" agent skill from https://github.com/av/mi/tree/master/skills/debug into .github/skills/debug/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "debug", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add av/mi --skill debug -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install av/mi debug --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/av/mi.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/debug .opencode/skills/debug && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "debug" agent skill from https://github.com/av/mi/tree/master/skills/debug into .opencode/skills/debug/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "debug", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
debug- GitHub stars
- 102
- Token cost
- ~871 tokens
- SKILL.md length
- 476 words
- Files
- 1
- Skills in repo
- 20
- Repo updated
- First seen
- Licence
- None found
At a glance
Fix bugs, crashes, errors, or failing tests. An agent skill from av/mi.
- Works in 6 steps: Reproduce. Write a minimal repro before… → Observe. Capture actual vs expected… → Hypothesize. State one explanation… → …
- Getting an error
- Calls python3
- Test is failing
What it does
Debug is an agent skill from av/mi. Fix bugs, crashes, errors, or failing tests. Use when "it's broken", "getting an error", "test is failing", or the cause isn't obvious.
Its SKILL.md is about 870 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.
It sits in Testing & QA, covering Debugging and Failing and flaky tests. The repository describes itself as: self-extending sandboxed agentic harness. a loop, two tools and an llm.
When your agent uses it
- Getting an error
- Test is failing
- The cause isnt obvious
Example prompts
- “s broken”
- “getting an error”
- “test is failing”
- “/debug”
Requirements
- Python 3
Workflow steps
6 steps, taken from the first numbered list in SKILL.md.
- Reproduce. Write a minimal repro before touching the suspected code. Either
- Observe. Capture actual vs expected side-by-side. Collect stack traces, logs, and intermediate state (print/console.log, set -x, a…
- Hypothesize. State one explanation explicitly: "I believe X because Y." One at a time. If you have several, pick the cheapest to test…
- Test the hypothesis. Change exactly one variable, re-run the repro, record the result. If the hypothesis is wrong, revert the change…
- Verify the fix. The repro now passes AND nothing else broke. Before declaring done, call skill("verify") and follow its body for the…
- Add tests if requested. If the original prompt included "add tests" or "write tests", the fix is confirmed — now call skill("tdd") and…
What it can do on your machine
Read from SKILL.md and the folder at commit 2bf50c9. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
Shell commands in SKILL.md call:
python3
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Debug loads about 871 tokens when it runs. Until then it costs about 35 tokens; SKILL.md has 476 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check passed
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
SKILL.md
Without a licence we can't republish the file, so here is its outline and opening line. It has 476 words (~871 tokens).
“Do not propose a fix before step 1 completes. A bug you cannot reproduce is a bug you cannot fix.”
- name
- debug
Files
Just SKILL.md in skills/debug of av/mi.
Open the folder on GitHubat commit 2bf50c9
Compare with similar skills
Debug next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Debug this skillav/mi | 102 | — | ~871 | Automated safety check: Pass | None | |
| Pester Failure AnalysisPowerShell/PowerShell | 56k | — | ~5.1k | Automated safety check: Pass | MIT | |
| Testingkortix-ai/suna | 20k | — | ~3.6k | Automated safety check: Notes | Custom licence | |
| OpenLogi Change VerificationAprilNEA/OpenLogi | 23k | — | ~1.4k | Automated safety check: Pass | Apache-2.0 | |
| RustPython Test Failure InvestigationRustPython/RustPython | 22k | — | ~467 | Automated safety check: Pass | MIT | |
| Issue To Regression Testbrunosabot/streamline-card | 269 | — | ~529 | Automated safety check: Pass | MIT |
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Plans the smallest check that could disprove a code change in the OpenLogi project, then escalates through reproduction, focused tests and a final gate before a push.
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Investigates a failing RustPython test by comparing it with CPython, then either fixes it or gathers the details for an incompatibility report.
Issue To Regression Test
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A skill your agent uses when the user asks to fix a bug, references a GitHub issue number, or describes an issue and wants a fix.
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Related
Categories
Questions about Debug
What does Debug do?
Fix bugs, crashes, errors, or failing tests. An agent skill from av/mi. Debug is an agent skill from av/mi. Fix bugs, crashes, errors, or failing tests.
When should I use Debug?
Debug fits situations like: getting an error; test is failing; the cause isnt obvious.
How do I install Debug in Claude Code?
Run `npx skills add av/mi --skill debug -a claude-code`. Or copy the skill folder (skills/debug in av/mi) into .claude/skills/debug in your project. Claude Code loads it when a task matches its description.
How do I install Debug in Codex?
Run `npx skills add av/mi --skill debug -a codex`. Or copy the skill folder (skills/debug in av/mi) into .agents/skills/debug in your project. Codex loads it when a task matches its description.
Can I use Debug in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add av/mi --skill debug -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/debug, .gemini/skills/debug, .github/skills/debug and .opencode/skills/debug in your project.
What does Debug need to run?
Going by SKILL.md and its folder, Debug needs the command-line tools its instructions call (python3). Our summary lists: Python 3.
Does Debug access the network?
SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.
Is Debug safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.
What licence does Debug use?
No licence was found for Debug or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.
How many tokens does Debug use?
About 871 tokens (SKILL.md is roughly 3.5k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
What are the alternatives to Debug?
Skills that share tags, products or a category with Debug: Pester Failure Analysis (PowerShell/PowerShell, 56k stars), Testing (kortix-ai/suna, 20k stars), OpenLogi Change Verification (AprilNEA/OpenLogi, 23k stars) and RustPython Test Failure Investigation (RustPython/RustPython, 22k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Debug?
av (a GitHub user) maintains it in av/mi, which has 102 GitHub stars. The repository holds 20 skills in this directory. The repository was last updated on September 26, 2026.
Source: av/mi on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.