investigating-a-codebase SKILL.md skillA
investigating-a-codebase from ed3dai/ed3d-plugins is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add ed3dai/ed3d-plugins/investigating-a-codebase@git:20260616.eb1d79cPins git:20260616.eb1d79c in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- ed3dai/ed3d-plugins
- Path
plugins/ed3d-research-agents/skills/investigating-a-codebase/SKILL.md- Versions recorded
- 3
- Latest version
- git:20260616.eb1d79c, committed Jun 16, 2026
- First version recorded
- Jan 15, 2026
- Size
- 5,204 bytes
- Repository stars
- 253
- License
- none declared
Use when planning or designing features and need to understand current codebase state, find existing patterns, or verify assumptions about what exists; when design makes assumptions about file locations, structure, or existing code that need verification - prevents hallucination by grounding plans in reality.
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
# Investigating a Codebase
## Overview
Understand current codebase state to ground planning and design decisions in reality, not assumptions. Find existing patterns, verify design assumptions, and provide definitive answers about what exists and where.
## When to Use
**Use for:**
- Verifying design assumptions before implementation ("Design assumes auth.ts exists - verify")
- Finding existing patterns to follow ("How do we currently handle API errors?")
- Locating features or code ("Where is user authentication implemented?")
- Understanding component architecture ("How does the routing system work?")
- Confirming existence definitively ("Does feature X exist or not?")
- Preventing hallucination about file paths and structure
**Don't use for:**
- Information available in external docs (use internet research)
- Questions answered by reading 1-2 specific known files (use Read directly)
- General programming questions not specific to this codebase
## Core Investigation Workflow
…Read the whole file at its exact version.
How to install
mdr add ed3dai/ed3d-plugins/investigating-a-codebase@sha256:86dacad6e9d20625The line at the top of this page pins the label git:20260616.eb1d79c, 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_zauksxrftg54atfy)
2 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 3 versions of this file, between Jan 15, 2026 and Jun 16, 2026, about one every 76 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260616.eb1d79c latest | 2026-06-16 | eb1d79c | 5,204 B | A | view · diff |
| git:20260204.611bfd1 | 2026-02-04 | 611bfd1 | 4,978 B | A | view · diff |
| git:20260115.cf17c55 | 2026-01-15 | cf17c55 | 4,956 B | A | view |
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 (5204 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
ed3dai/ed3d-plugins · 253 stars · license none declared · pushed 2026-09-06 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_zauksxrftg54atfy GET https://markdownregistry.com/api/v1/resolve?ref=ed3dai/ed3d-plugins/investigating-a-codebase GET https://markdownregistry.com/api/v1/blob/86dacad6e9d20625e9750ee9b7add02d7ca76eb241aaed8e5f963329a0652c90
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.