What is codebase-mapper?

A plugin that creates and maintains a structured map of a software project. The map is made of small documents that a coding agent loads at the start of each session and updates as the code changes.

Use it for documentation, onboarding, architecture analysis, and providing context to coding agents in new or existing projects.

It reduces the time spent re-understanding an unfamiliar project and helps keep architecture and project notes aligned with the code.

codebase-mapper — Plugin by Eigenwise

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods

npx agentmods add plugins/eigenwise/eigenwise-toolshed/codebase-mapper

Claude Code

/plugin marketplace add Eigenwise/eigenwise-toolshed

Clone the repo

git clone --depth 1 https://github.com/Eigenwise/eigenwise-toolshed

Made for: Claude Code.

Per session not measured What this adds to a session before it is invoked.

When invoked not measured Not applicable: nothing here is loaded into a session.

Security scan A 0 findings. Scan, not verified.

Origin original No closer match found in the catalogue.

Security

Grade A, and why

codebase-mapper scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured yesterday.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

plugins/codebase-mapper/.claude-plugin/plugin.json · 23 lines

What it actually says

{
  "name": "codebase-mapper",
  "version": "2.15.7",
  "description": "A self-maintaining codebase map: atomic docs Claude loads at the start of each session and keeps in sync as the code changes. Any stack; greenfield or existing.",
  "author": {
    "name": "Eigenwise",
    "email": "[email protected]"
  },
  "homepage": "https://github.com/Eigenwise/eigenwise-toolshed/tree/main/plugins/codebase-mapper",
  "repository": "https://github.com/Eigenwise/eigenwise-toolshed",
  "license": "MIT",
  "keywords": [
    "documentation",
    "codebase",
    "mapping",
    "context",
    "grounding",
    "onboarding",
    "architecture",
    "self-maintaining"
  ]
}

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

yesterday First seen · 23 lines scan A 0280f608fa58

Subscribe to this mod's changes

codebase-mapper is a plugin published in the GitHub repository Eigenwise/eigenwise-toolshed (36 stars, last pushed 3d ago), licensed MIT. Its token cost is not measured: this kind of file is read by the harness, not the model. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

Planning Writing and docs

codebase-mapper

Getting it into your agent

Grade A, and why

Nothing flagged

What it actually says

What this file has done since we first saw it

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