guild-learn-map

A codebase map builder that scans an existing project and creates a basic architecture map with confidence labels.

In plain words
What is it for?
Use it to run the initial project scan through `/guild:init` or `/guild:learn map`. It is for existing projects, not new ones or deeper tasks such as dependency graphs, onboarding tours, change analysis, or file explanations.
Why use it?
It gives an agent a quick, shared view of an unfamiliar codebase without repeating the same scan for different learning tasks.

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/lookatitude/guild/learn-map
Any agent
npx skills add lookatitude/guild --skill learn-map
Clone the repo
git clone --depth 1 https://github.com/lookatitude/guild

Made for: Claude Code, Codex.

Per session 232 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 4,533 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 $0.00232 $0.04533
Opus 5 $0.00116 $0.02266
Sonnet 5 $0.00046 $0.00907
Haiku 4.5 $0.00023 $0.00453

Measured 2d ago against content hash 9818bd209d68, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

guild-learn-map 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.

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/knowledge/learn-map/SKILL.md · 257 lines

How it starts

The opening of the file, as written. The whole thing — 257 lines — stays where its author put it; the contents beside it link to each section on GitHub.

When to use it

Use to produce the cheap-scan tier of the brownfield derived indexes (the authoritative 7-stage spec is implemented in scripts/learn/) and to anchor the rest of the learn-* family. This skill is invoked two ways, running the same implementation (D3):

  • /guild:init (default). Stage 1 only → CodebaseMap + a confidence-tagged architecture-map.md stub. This is Init-DONE. The deep tiers are NOT built here and are NOT required for Init to complete.
  • /guild:learn map, or /guild:init --learn / defaults.auto_learn: true. The cheap scan still runs here; the deep tiers (guild:learn-graph, learn-onboard, learn-diff, learn-explain) run as the same family, on demand or at bootstrap. There is no second codebase-understanding implementation — init --learn and /guild:learn invoke these same skills.

When not to use it

Not for greenfield (interview-first; the graph build is skippable there). Not for the deep semantic graph or reverse-spec (guild:learn-graph), tour narration (guild:learn-onboard), diff/blast-radius (guild:learn-diff), or file/module explanation (guild:learn-explain). Not for ingesting a single external source (guild:wiki-ingest) or querying an already-built graph/wiki — that is the bounded kg-query retrieval path (wired into guild:context-assemble) / guild:wiki-query. Not a competing memory: every index is a derived projection over .guild/wiki/ (canonical) + the repo, rebuildable and deletable with zero data loss.

/guild:learn map emits NO capability proposals. The guild.project_capability_profile.v1 emission (D1) belongs to the FULL Learn pipeline (guild:learn step 12b), not to the cheap-scan tier. The cheap scan has not built the evidence a candidate must cite — proposing a role from a file inventory alone is exactly the "invented professions" failure the sparse-project guard (cap-loc-D04) exists to prevent. Map maps; it does not propose.

Required inputs

Read the full file on GitHub · 257 lines

Files

What ships with it

1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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 · 257 lines · 232 tokens per session scan A 9818bd209d68

Subscribe to this mod's changes

guild-learn-map is a skill published in the GitHub repository lookatitude/guild (7 stars, last pushed 2d ago), licensed MIT. It adds 232 tokens to every session and 4,533 once invoked, about $0.0012 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 2026-08-31.

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