investigate SKILL.md skillA

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

Install it, pinned
mdr add andyed/session-cartographer/investigate@git:20260923.767e202

Pins git:20260923.767e202 in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
andyed/session-cartographer
Path
plugins/session-cartographer/skills/investigate/SKILL.md
Versions recorded
8
Latest version
git:20260923.767e202, committed Sep 23, 2026
First version recorded
Jul 13, 2026
Size
3,007 bytes
Repository stars
8
License
MIT

Bring past diagnoses to a bug before fixing it, record the new root-cause hypothesis, and close it as confirmed or refuted once the fix is verified. Use when a bug could come from more than one layer, or looks like something seen before.

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

# Investigate

Cartographer's part of bug work is memory: what was diagnosed before, which
hypotheses turned out wrong, and what finally fixed it. How to debug is left to
you. This skill adds three steps around your own diagnosis.

Resolve `ROOT` from `CARTOGRAPHER_ROOT`, `CLAUDE_PLUGIN_ROOT`, or `PLUGIN_ROOT`;
otherwise use this skill's base directory (`../..` from `skills/investigate`).

## 1. Recall before diagnosing

Search for the symptom and for the files or components involved:

```bash
bash "$ROOT/scripts/cartographer-search.sh" "Investigated <symptom words>" --limit 10
bash "$ROOT/scripts/cartographer-search.sh" "<file or component name>" --limit 10
```

For each earlier `investigation` result, search its event id to find how it
ended. An `investigation_outcome` event names it in its summary:

```bash
bash "$ROOT/scripts/cartographer-search.sh" "evt-abc123def456" --limit 5
```

Use `--get <ids>` for the full records. Report what bears on this bug, most of
all hypotheses that were **refuted** for a similar symptom, and a confirmed
cause that could be recurring. An investigation with no outcome is an open
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add andyed/session-cartographer/investigate@sha256:01b06229ed425feb

The line at the top of this page pins the label git:20260923.767e202, 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_l7uio3t6cn4f4ohp.svg)](https://markdownregistry.com/a/art_l7uio3t6cn4f4ohp)

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

Versions

The registry has recorded 8 versions of this file, between Jul 13, 2026 and Sep 23, 2026, about one every 10 days.

versioncommittedcommitsizeaudit
git:20260923.767e202 latest2026-09-23 767e202 3,007 BA view · diff
git:20260910.889ea9c2026-09-10 889ea9c 7,522 BA view · diff
git:20260902.1d1f6a12026-09-02 1d1f6a1 6,768 BA view · diff
git:20260829.d0f524a2026-08-29 d0f524a 6,741 BA view · diff
git:20260814.9f975892026-08-14 9f97589 6,426 BA view · diff
git:20260814.b61c6f92026-08-14 b61c6f9 4,901 BA view · diff
git:20260713.966aafa2026-07-13 966aafa 4,715 BA view · diff
git:20260713.a87f0b92026-07-13 a87f0b9 4,507 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 (3007 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

andyed/session-cartographer · 8 stars · license MIT · pushed 2026-10-23 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_l7uio3t6cn4f4ohp
GET https://markdownregistry.com/api/v1/resolve?ref=andyed/session-cartographer/investigate
GET https://markdownregistry.com/api/v1/blob/01b06229ed425febd29c23f79a37c18a9f6d2ce2ad0380d28bcfc2acf2ea78e6

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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Every file in andyed/session-cartographer

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