project-structure

A compact map of a TypeScript or Swift repository that lists its files, exported code, typed signatures, and plugin boundaries.

In plain words
What is it for?
Use it to plan refactors, investigate repository structure, find repeated code, or provide another agent with a project overview.
Why use it?
It gives an AI coding agent a whole-project view within its context limit, making it easier to spot duplication and understand architecture without reading every file.

Skill for Claude CodeCodex

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 skills/steipete/agent-scripts/project-structure
Any agent
npx skills add steipete/agent-scripts --skill project-structure
Clone the repo
git clone --depth 1 https://github.com/steipete/agent-scripts

Made for: Claude Code, Codex.

Per session 64 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,867 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00064 $0.01867
Opus 5 $0.00032 $0.00933
Sonnet 5 $0.00013 $0.00373
Haiku 4.5 $0.00006 $0.00187

Measured 2d ago against content hash cb3a169bb404, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

project-structure 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 2d ago.

The scan reads SKILL.md. This mod also ships 3 executable files (fixtures/ts/destructured.ts, map.ts, selftest.mjs), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

skills/project-structure/SKILL.md · 70 lines

How it starts

The opening of the file, as written. The whole thing — 70 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Project Structure

Compress a TS or Swift repo into one map file an agent can load whole. Backed by map.ts next to this file. TS: parse-only TS compiler, no type-check; ~8k files in ~5s; resolves the typescript package from the target repo, falling back to this skill dir. Swift: zero-dependency regex/brace-depth scanner built into map.ts (no typescript needed for pure-Swift repos). Requires Node >= 23.6 (native type stripping) or npx tsx. .ts/.tsx and .swift files are detected by extension; a repo may mix both.

Run

node <this-skill-dir>/map.ts <repoRoot> [flags]

<this-skill-dir> is the base directory of this skill as announced when the skill loads (canonical: ~/Projects/agent-scripts/skills/project-structure).

Output: one map file (default project-structure-map.txt in cwd) plus a JSON stats line (files, symbols, bytes, approxTokens) on stdout.

Flags

  • --out <file> — output path.
  • --mode dense|skeleton|exports|sigs|full — default dense.
    • dense: dir-grouped, one line per file: file fn:a,b ty:T cl:C c:x re:./y. Recon tier. File extensions are stripped for compactness, so a same-basename TS and Swift file in one dir share a line prefix (theoretical in practice; grep the repo to disambiguate).
    • skeleton: one symbol per line, names only.
    • exports: exported symbols with full typed signatures, type bodies, first doc-comment line. Refactor-decision tier. TS-only — Swift files fall back to their dense-style line (no fabricated signatures).
    • sigs: exports but type/interface bodies collapsed to member names (only ~10% smaller than exports; rarely worth it). TS-only, same Swift fallback.
    • full: exports + non-exported top-level symbols (marked internal; internal consts appear only when function-valued or explicitly typed — untyped internal consts are filtered as noise). TS-only, same Swift fallback.
  • --include a,b,c — paths to map, relative to repoRoot (default: all top-level dirs, minus skips/boundaries). Accepts nested paths, not just top-level dirs: --include src/channels/turn maps exactly that subtree. Headers stay repoRoot-relative, so running from repo root with --include <subsystem> is the recommended way to map a subsection.
  • --boundary x,y — dirs listed as boundary index only: child module names + one-line package.json descriptions, no symbol content. Use for plugin/extension trees.
  • --include-tests — keep test files and test-support infra (default: both excluded; Swift test detection is path-based: Tests?/ dirs and *Tests.swift).
  • --no-docs — strip doc comments (saves ~13% on typed modes).
  • --fn-consts-only — drop non-function const exports (on Swift files: drops every let/var symbol — closure-valued consts are indistinguishable without type info). Caution: silently drops files whose only exports are consts (plugin definition objects, schemas, registries). Prefer keeping consts in dense (names are cheap).
  • --re-counts — collapse re-export path lists to a count (dense; saves ~10%).
  • --max-per-kind N — cap each symbol-kind list per file with +n overflow marker (dense; 10–12 is safe).
  • --members — Swift only (ignored for TS files): additionally emit one-level-deep methods/properties as Type.member; extension members appear under their target type.
  • --public-only — Swift only (ignored for TS files): keep only symbols whose written access is open/public.

Read the full file on GitHub · 70 lines

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.

  1. 2d ago First seen · 70 lines · 64 tokens per session scan A cb3a169bb404

Subscribe to this mod's changes

project-structure is a skill published in the GitHub repository steipete/agent-scripts (6,580 stars, last pushed 2d ago), licensed MIT. It adds 64 tokens to every session and 1,867 once invoked, about $0.0003 per session on Opus 5. 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.

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