investigate SKILL.md skillA

investigate from geiserx/agent-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add geiserx/agent-skills/investigate@git:20260929.133011b

Pins git:20260929.133011b in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
geiserx/agent-skills
Path
codex/skills/investigate/SKILL.md
Versions recorded
2
Latest version
git:20260929.133011b, committed Sep 29, 2026
First version recorded
Sep 29, 2026
Size
4,615 bytes
Repository stars
4
License
GPL-3.0

Investigates a bug or unexpected behavior from reproduction to root cause with a panel of independent hypothesis agents, then fixes it only when the request asks for a fix. Use when invoked explicitly to debug, diagnose, or fix a reported failure.

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

## Running in Codex

This is the Codex copy of this skill. Read the rest of it with these translations:

- Agents launched in parallel: spawn each one with `spawn_agent` before waiting on any, then collect the
  results with `wait_agent`. Tell every agent you spawn not to spawn agents of its own. If subagents are
  unavailable, run each lane yourself, one after another.
- "Your default model" and "your strongest model": spawn the agent with an `agent_type` whose role file in
  `~/.codex/agents/` sets `model` and `model_reasoning_effort`. An agent without a role runs on the
  session's model.
- A slash command such as `/name`: mention the skill as `$name`.
- This repository's hooks and `.claude/` paths are for Claude Code only, and nothing here installs a Codex
  hook. A loop runs one pass per invocation, saves its state and reports how to resume.
- `CLAUDE.md`: also read `AGENTS.md`, which is the file Codex loads.

# investigate

Investigate the reported behavior from reproduction to root cause. Fix it only when the request authorizes a change.

The task is the text given with this invocation.

---

## Authorization

Infer the terminal condition from the request:
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add geiserx/agent-skills/investigate@sha256:ebd2c0c3795c196b

The line at the top of this page pins the label git:20260929.133011b, 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.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_zssuw7ost5mtbfo2.svg)](https://markdownregistry.com/a/art_zssuw7ost5mtbfo2)

3 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 2 versions of this file, all committed on Sep 29, 2026.

versioncommittedcommitsizeaudit
git:20260929.133011b latest2026-09-29 133011b 4,615 BA view · diff
git:20260929.bdaf1442026-09-29 bdaf144 4,584 BA view

Audit of the latest version

A  17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (4615 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

GitHub

geiserx/agent-skills · 4 stars · license GPL-3.0 · pushed 2026-10-14 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_zssuw7ost5mtbfo2
GET https://markdownregistry.com/api/v1/resolve?ref=geiserx/agent-skills/investigate
GET https://markdownregistry.com/api/v1/blob/ebd2c0c3795c196bae0daa1e176f13e493fb031d3b9a1b089639ccd7d9b190ef

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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