# Repo

> Repository operating rules for verified Mythos edits.

- Skill: `thewaltero/repo` (Agent Skill)
- Install (CLI): `npx skillmds@latest add thewaltero/repo`
- Raw SKILL.md: https://api.skillmd.com/api/skills/thewaltero/repo/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: thewaltero (https://skillmd.com/u/thewaltero)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/thewaltero/repo

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# repo Skill

## Purpose
Use this skill when Mythos is working inside a real project repository and must preserve the shape of the existing system.

## Read First
- README.md
- CHANGELOG.md
- package.json
- src/cli.ts
- src/commands/
- src/commands/swd.ts
- src/swd.ts
- src/security-policy.ts

## Rules
- Follow the current architecture and naming conventions before adding new patterns.
- Keep edits scoped to the requested behavior.
- Do not change public CLI flags, package scripts, CI, deploy files, or secret-handling files unless the task explicitly requires it.
- Prefer small, reviewable changes over broad refactors.
- Preserve dry-run behavior for every command that can write files.
- Treat `mythos swd apply` as the external-agent execution boundary: no model calls, fail-closed path checks, and JSON-safe output for automation.

## Verification
- If the task affects CLI behavior, suggest the narrowest command the maintainer should run.
- If the task affects external-agent SWD behavior, include `mythos swd apply --stdin --json` coverage or an equivalent test.
- If tests or builds cannot be run safely, state that clearly and name the exact check to run manually.
- Treat SWD receipts as the audit record for any successful filesystem mutation.