Codemap

Turns a codebase into an explorable isometric architecture diagram — a self-contained HTML artifact with blocks on a grid, a component index, a what-it-does/how-it's-built panel, and real data snippets travelling along the edges that the reader can stop and inspect. Use this whenever someone asks for a codemap by name — "create a codemap", "codemap this repo", "make a codemap of github.com/owner/name" — and equally when they want to see, map, diagram or visually explain how a system fits together: "diagram this codebase", "show me the architecture", "map how this works", "visualise the data fl

10 stars 1 forksSoftware Development

Install

skills CLI (Claude Code, Cursor, Codex and more)

npx skills add beadnall/codemap --skill codemap

Manual install

git clone --depth 1 https://github.com/beadnall/codemap.git /tmp/codemap
mkdir -p ~/.claude/skills
cp -r /tmp/codemap/. ~/.claude/skills/codemap

Personal skills live in ~/.claude/skills. Use .claude/skills in a project folder to share a skill with your team.

From the SKILL.md

# Codemap

A diagram of a system that someone can actually explore: isometric blocks on a
grid, an index of components down the left, an explanatory panel on the right,
and the system's own data moving along the edges as dots you can stop and read.

The point is not decoration. A map like this earns its place when it answers
questions faster than reading the source would — which means it lives or dies on
the **facts you put in it**, not on the rendering. A diagram of boxes labelled
"Service", "Database" and "API" tells a reader nothing they could not have
guessed, and takes an afternoon to produce. Budget your effort accordingly: most
of it goes into mining the repository, and very little into drawing.

## The shape of the work

1. Mine the repository for facts.
2. Choose the nodes and the edges.
3. Copy `assets/template.html`, replace four arrays.
4. Verify it, since you cannot see it.
5. Publish as an artifact.

## 1. Mine the repository for facts

Do this before you think about layout. You are looking for the things a reader
could not get from the file listing:

- **Measured numbers.** Anything the project established by running rather than
  by assuming — throughput, hit rates, limits, counts. `git log`, test files and
  long code comments are where these hide.
- **Failures and their causes.** Comments explaining why something is the way it
  is, commits that say "fix", constants with a paragraph above them. A constant

Read the full skill on GitHub

Details

Skill name: codemap
Repository: beadnall/codemap
License: MIT
Repo updated: 16 August 2026

FAQ

What does the Codemap skill do?

How do I install the Codemap skill?

skills CLI (Claude Code, Cursor, Codex and more): npx skills add beadnall/codemap --skill codemap. Skills go in ~/.claude/skills (personal) or .claude/skills (project), and Claude loads them automatically when a task matches the description.

Is Codemap popular?

It lives in beadnall/codemap, which has 10 GitHub stars and 1 forks.

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