name: repo-mapping description: "Use when user asks to "create repo map", "generate repo map", "update repo map", "repo map status", or "map symbols/imports". Builds and validates an AST-based repo map using ast-grep." argument-hint: "[action] [--force]"

OpenCode Note: Invoke agents using @agent-name syntax. Available agents: task-discoverer, exploration-agent, planning-agent, implementation-agent, deslop-agent, delivery-validator, sync-docs-agent, consult-agent Example: @exploration-agent analyze the codebase

Repo Mapping Skill

Build and maintain a cached AST-based map of repository symbols and imports using ast-grep.

Parse Arguments

(JavaScript reference - not executable in OpenCode)

Primary Responsibilities

1. •Generate map on demand (/repo-map init)
2. •Update map incrementally (/repo-map update)
3. •Check status and staleness (/repo-map status)
4. •Validate output with the map-validator agent

Core Data Contract

Repo map is stored in the platform state directory:

• •Claude Code: .opencode/repo-map.json
• •OpenCode: .opencode/repo-map.json
• •Codex CLI: .codex/repo-map.json

Minimal structure:

{
  "version": "1.0.0",
  "generated": "2026-01-25T12:00:00Z",
  "updated": "2026-01-25T12:05:00Z",
  "git": { "commit": "abc123", "branch": "main" },
  "project": { "languages": ["typescript", "python"] },
  "stats": { "totalFiles": 142, "totalSymbols": 847 },
  "files": {
    "src/auth/login.ts": {
      "hash": "deadbeef1234abcd",
      "language": "typescript",
      "symbols": { "exports": [], "functions": [], "classes": [] },
      "imports": [ { "source": "./utils", "kind": "named" } ]
    }
  }
}

Behavior Rules

• •Never run ast-grep without user approval if it is not installed
• •Never install dependencies without explicit user consent
• •Always validate map output with map-validator after init/update
• •Prefer incremental update unless map is stale or history rewritten

When to Suggest Repo Map

If a user asks for drift detection, documentation alignment, or repo analysis and repo-map is missing:

Repo map not found. For better analysis, run:
  /repo-map init

Staleness Signals

• •Map commit not found (rebased)
• •Branch changed
• •Git hooks marked stale
• •Commits behind HEAD

Output Expectations

Keep outputs concise:

• •init/update: file count, symbol count, commit, warnings
• •status: staleness, commits behind, last updated