# Ca Create Context

> Brownfield back-fill — scout an existing codebase and populate .codearbiter/, then lock it initialized.

- Skill: `majiayu000/ca-create-context` (Agent Skill, multi-file: 2 files)
- Install (CLI): `npx skillmds add majiayu000/ca-create-context`
- Raw SKILL.md: https://api.skillmd.com/api/skills/majiayu000/ca-create-context/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: majiayu000 (https://skillmd.com/u/majiayu000)
- Updated: 2026-09-09
- Page: https://skillmd.com/skills/majiayu000/ca-create-context

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# /ca-create-context — brownfield populate

Wraps an existing codebase in project state without guessing. Dispatches parallel scouts to read the repository, synthesizes their findings into the surviving `.codearbiter/` doc set, resolves gaps via a targeted interview, and locks the project initialized. No arguments — the skill reads the repo and asks only what it cannot determine.

The only permitted path to populate `.codearbiter/` when meaningful source code already exists. For a greenfield project with no source, use `/ca-decompose`.

## Routes to

The `context-creation` skill (`<plugin-root>/routines/context-creation/SKILL.md`) — six gated
phases: pre-flight, scout dispatch, synthesis, gap interview, write, lock. Scouts return paths, line
numbers, and named values only — never raw source or secret values. The skill is canonical for the
phases and their gates.

## When NOT to use

- Project already initialized (`<!--INITIALIZED-->` in `CONTEXT.md`) → `/ca-status`.
- Greenfield project, no source → `/ca-decompose`.
- `.codearbiter/` not yet scaffolded → `/ca-init` first.
- Update one doc → edit `<project-root>/.codearbiter/` directly or use `/ca-feature`.

## Hard gate

BLOCK if `<!--INITIALIZED-->` is already present in `CONTEXT.md`. BLOCK if no meaningful source exists
(route to `/ca-decompose`). BLOCK if any scout fails to return before synthesis. BLOCK if any
`[CONFIRM-NN]` exits the gap interview unresolved and undeferred. MUST NOT write `<!--INITIALIZED-->`
until every gap is resolved or deferred to `open-questions.md`.