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arch-index

Build and validate .arch/index.json — a committed map from each architectural component of this repository to the real directories and files that implement…

Skill by coco-research

IndexedNOASSERTION★ 784
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Install

Works with Claude Code, Claude apps, Codex, Cursor, Gemini CLI, GitHub Copilot, VS Code, OpenCode, Goose, Windsurf. Read the repository before you give any tool access to your data.

npx agentmarket install skill/coco-research-arch-index

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About

Build and validate .arch/index.json — a committed map from each architectural component of this repository to the real directories and files that implement it, pinned to a git commit, with every path verified to exist. Also detects structural drift between that index and the current code. Use when asked to map a codebase, produce a component or code-ownership index, find which files implement a component, check whether architecture docs are stale, or detect architecture drift after a refactor. Triggers include 'map the codebase', 'component index', 'which files implement X', 'is the architecture still accurate', 'architecture drift', 'refresh the architecture index'.

Use cases: frontend

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Permissions

What this skill can do and what it asks for, from its SKILL.md and code. Checked Oct 25, 2026.

Tools
No tools found
Secrets
None asked for
Install scripts
None found
Runs as
Python package

Network hosts it talks to 1

  • codeload.github.com · found in install command

Files it touches

  • ~/.claude/skills/arch-index

What's inside

Skill name
arch-index
Description
Build and validate .arch/index.json — a committed map from each architectural component of this repository to the real directories and files that implement it, pinned to a git commit, with every path verified to exist. Also detects structural drift between that index and the current code. Use when asked to map a codebase, produce a component or code-ownership index, find which files implement a component, check whether architecture docs are stale, or detect architecture drift after a refactor. Triggers include 'map the codebase', 'component index', 'which files implement X', 'is the architecture still accurate', 'architecture drift', 'refresh the architecture index'.
License
NOASSERTION
Instructions
207 lines in SKILL.md · view on GitHub

Before installing

  • Ships executable scripts

Files (19)

  • SKILL.md
  • analysis-taxonomy.md · references/
  • arch-plan.md · references/
  • component-rules.md · references/
  • schema.md · references/
  • tool-frugality.md · references/
  • arch_drift.py · scripts/
  • bad-invariants.json · scripts/fixtures/
  • bad-paths.json · scripts/fixtures/
  • good.json · scripts/fixtures/
  • plan-bad-shape.json · scripts/fixtures/
  • plan-good.json · scripts/fixtures/
  • plan-unbuilt.json · scripts/fixtures/
  • repo_tree.py · scripts/
  • run_fixtures.sh · scripts/
  • validate_index.py · scripts/
  • verify_arch_plan.py · scripts/
  • ARCH-EVIDENCE.md.template · templates/
  • INDEX.md.template · templates/

The license isn't open source, so the instructions aren't shown here. Read SKILL.md on GitHub

More from coco-research/coco

Signals

Stars
784
Forks
13
Open issues
55
Last commit (this folder)
Sep 18, 2026 (1 month ago)
Last release
Oct 23, 2026 (7 days ago)

From GitHub (fetched Oct 24, 2026).

Details

License
NOASSERTION
Repository
github.com/coco-research/coco
Website
cocoresearch.org/coco/
First seen
Oct 24, 2026
Last checked
Oct 24, 2026
Source
GitHubgithub-graphql

More from coco-research

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Cite this page

arch-index skill. Agent Mart. https://agentmart.dev/skills/coco-research-arch-index (last updated 2026-10-24)