Graph

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The live code map

forge keeps a dependency graph of the whole repo — built once, then patched automatically as files change, so your structural context never goes stale. It's a zero-dependency, fully-local synthesis of the three things a code graph is good for:

• god-nodes — the most-depended-on files (highest fan-in); the architectural hotspots to touch with care.
• modules / clusters — the architecture at a glance (which directories form cohesive units, how many communities exist).
• neighbors / impact — who imports a file, and the transitive blast radius of changing it.
• cycles · dead files · orchestrators — dependency cycles (refactor hazards), orphaned files (0 in / 0 out, non-entry), and high-fan-out composition roots.

It updates itself: a SessionStart hook injects a fresh map and triggers a background refresh; the Stop hook patches changed files after every turn (mtime-diff — only changed files are reparsed). You usually read the injected map for free; reach for the CLI when you need a specific answer.

When to use it

• Before editing a shared file — run impact to see everything that could break.
• Entering an unfamiliar repo — run map to learn the hotspots and module layout in one call (cheaper and more accurate than grepping around).
• "Where is X / what uses X" — neighbors gives importers and imports directly.
• It's the structural layer forge:understand leans on — use the graph first, then read only the files on the path.

Commands

G=~/.claude/skills/forge/scripts/graph.js
node "$G" map                 # god-nodes + module map for this repo
node "$G" neighbors     # direct imports ↑ and importers ↓ of a repo-relative file
node "$G" impact        # transitive blast radius — who breaks if this changes
node "$G" stats               # files / deps / clusters / last-built
node "$G" refresh             # build if missing, else mtime-patch (the hooks do this for you)

Paths are repo-relative with / separators (e.g. src/api/client.ts), exactly as the map prints them.

What it does and doesn't see

• Edges = static imports/requires/includes, resolved to real repo files: JS/TS (import/require/dynamic-import, relative + index resolution + tsconfig/jsconfig baseUrl/paths aliases like @/…), Python (absolute + relative, incl. nested-package suffix match), C/C++ (#include "…"), Ruby (require_relative), Rust (mod). It respects the repo's .gitignore (single-name dir/file entries) so generated/ignored code isn't counted.
• It does not follow dynamic dispatch / runtime reflection, monorepo workspace-package imports (bare @scope/pkg → another package), or Go module-path imports. Languages without an extractor yet — Go, Java, Kotlin, PHP, C#, Swift — are counted as files but appear as edgeless nodes. Treat the map as a high-accuracy skeleton, not a completeness proof; confirm a critical call path by reading the code (forge:verify).
• If a deeper symbol-level call graph is available (e.g. CodeGraph MCP via /codegraph-here), prefer it for precise caller/callee analysis; forge:graph is the always-on, zero-setup baseline.

Freshness

The map is patched after each turn, so during a session it tracks your edits. If you've just made sweeping changes and want certainty before a big query, run node "$G" refresh first. Disable the whole subsystem with FORGE_GRAPH=off.

Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

• Author: vasu-devs
• Source: vasu-devs/Forge
• License: MIT

Install and usage instructions live in the source repository linked above.