codemap

codemap 🗺️

codemap — structural ground truth for coding agents. Resolves what your code actually imports, tells you what breaks if you change it, and is explicit about what it couldn't figure out.

Your agent's first minute

brew tap JordanCoin/tap && brew install codemap   # one static binary
cd your-repo && codemap setup                      # hooks, MCP, and skills for the agents it finds
codemap doctor                                     # verify the wiring

Other MCP clients can launch codemap mcp (stdio) directly.

After codemap setup, the agent gets three answers it cannot get from the source text, at session start, before an edit, and on request.

Where things are. codemap .

╭─────────────────────────────── codemap ────────────────────────────────╮
│ Files: 372 (all types, after ignore rules and filters) | Size: 2.9MB   │
│ Top Extensions: .go (293), .md (45), .yml (29), .sh (3), .ps1 (1)      │
╰────────────────────────────────────────────────────────────────────────╯
codemap
├──   analysis/ (2 files, 4.1KB, all .go)
│   └── ⭐️ contracts.go ←45 (+1 test)
├──   ⭐️ cmd/ ←6 (59 files, 533.1KB, all .go)
│   ...
├──   config/ (2 files, 25.1KB, all .go)
│   └── ⭐️ config.go 328L ←42 (+1 test)
...
⭐️ ←N = imported by N files, 3+ of them non-test (Go: package count, on its dir); NL = lines, shown at 100+ (text files up to 2MB)
Hubs (top 10 of 15, by importers):
  ←79  scanner/
  ←48  internal/projectpath/
  ←45  analysis/contracts.go
  ...
Next: codemap --deps · codemap --importers scanner/astgrep.go

Who depends on this. codemap --importers config/config.go

⚠️  HUB FILE: config/config.go
   Imported by 42 files (package codemap/config: Go imports name packages, not files) - changes have wide impact!

   Dependents:
   • blast_radius.go
   • blast_radius_fixes_test.go
   • cmd/config.go
   • cmd/config_more_test.go
   • cmd/config_test.go
   ... and 37 more
   Imports 2 hub(s): internal/projectpath/ (2 files), limits/ (2 files)
Coverage: complete

Where is X defined. codemap find "hub importers" ranks files by path and function/type names, then by body text; hits that matched only in a body are tagged (body). For an exact bug symptom, grep too.

importers_go_package_test.go
  matched: importers_go_package_test.go, TestImportersCLIReportsGoPackageGranularity, TestImportersCLIGoPackageHubIsNotAFileHub, TestImportersCommandListsMultiFilePackageImporter
  importers: 0 (of package codemap)
cmd/hooks_test.go
  matched: TestHubInfoIsHub, TestCheckFileImportersOutput, formatFileImportersOutput, TestHubInfoWithMultipleHubs, TestGetHubInfoNoDeps
  importers: 0 (of package codemap/cmd)
main.go
  matched: resolveImportersInvocation, buildImportersReport, runImportersMode, isGitHubURL
  importers: 0 (of package codemap)
...
Coverage: complete

Ranked by path and symbol match, each hit tagged with its importer count. Lexical only, and it says so.

And the one line every answer carries. Every dependency answer reports a coverage status: complete, partial, or unavailable, with the source that could not be trusted. A partial graph never reads as a complete one, so "nothing imports this" and "I couldn't tell" are different answers. The full contract is in docs/RESOLUTION.md.

What it's for

An agent reading your repo can see what a file says. It can't cheaply see what depends on that file. That answer lives in go.mod, Cargo workspace membership, package.json exports maps, and tsconfig path aliases, not in the source text.

codemap computes three things:

Install

# macOS/Linux
brew tap JordanCoin/tap && brew install codemap

# Windows
scoop bucket add codemap https://github.com/JordanCoin/scoop-codemap
scoop install codemap

Tarballs, CI, and what codemap setup writes: docs/INSTALL.md.

Commands

codemap .                   # structure view
codemap --diff              # what changed vs main
codemap --deps .            # dependency flow
codemap --importers <file>  # who imports a file
codemap blast-radius        # review bundle: diff + deps + importers
codemap find "<query>"      # where is X defined
codemap handoff .           # save a handoff for the next agent
codemap doctor              # validate agent integrations

Agent integration

• Hooks: automatic context at session start, before and after edits, and at compaction. docs/HOOKS.md
• MCP: codemap mcp serves 19 tools over stdio. docs/MCP.md
• Codex: codemap setup configures it; trust the hooks once from /hooks. docs/MCP.md

Go deeper

Roadmap

Shipped: diff/skyline/deps modes, project config, Claude + Codex hooks and MCP, cross-agent handoff, remote repos, intent routing, skills framework, context protocol, HTTP API, build-system-aware resolution for Go/Rust/JS/TS, and the versioned coverage contract.

Next:

• Per-query coverage — report only the gaps that affect this answer, not the whole scan (#111)
• Per-edge provenance — which resolver produced each edge, so "why does codemap think A imports B?" is answerable
• Community skill registry (codemap skill add <name>)
• Enhanced analysis (entry points, key types)

Peers

sem does symbol-level impact analysis. serena and codebase-memory-mcp are broader MCP servers with semantic retrieval, and zvec-grep is hybrid search. codemap's difference: imports resolved through each ecosystem's real rules, a coverage status on every answer, and hub warnings before an edit.

Contributing

Fork → branch → commit → PR. See CONTRIBUTING.md before adding a new language.

License

MIT