This skill should be used when the user asks to "adopt C3", "onboard me to architecture", "scaffold C3 docs", "init C3", "audit architecture", "validate C3", or "check C3 docs". Also triggers when no .c3/ directory exists. Routes to c3-query for navigation, c3-alter for changes.
Sets up C3 architecture documentation by creating `.c3/` structure and filling layers (Context, Containers, Components, ADRs). Triggers on "adopt C3", "init C3", or missing `.c3/README.md`. Routes audit requests to validation checks, queries to navigation, and changes to alterations.
/plugin marketplace add lagz0ne/c3-skill/plugin install c3-skill@c3-skill-marketplaceThis skill inherits all available tools. When active, it can use any tool Claude has access to.
Load ../../references/skill-harness.md for routing and red flags.
| Condition | Mode |
|---|---|
No .c3/README.md | Adopt - Set up C3 |
Has .c3/ + "audit" intent | Audit - Validate docs |
Has .c3/ + other intent | Route to c3-query or c3-alter |
Two rounds:
User runs: PROJECT="MyApp" C1="backend" C2="frontend" ./scripts/c3-init.sh
Creates .c3/ with Context, Containers, ADR-000.
Dispatch subagent with ../../references/container-patterns.md to:
| Layer | Task |
|---|---|
| Context (c3-0) | Actors, containers, external systems, diagram, linkages |
| Container (c3-N) | Assess complexity first, then components, diagram, fulfillment |
| Component (c3-NNN) | Create from category template, add ## References |
| ADR-000 | Document adoption, list containers, verification |
Templates: ../../templates/component-{foundation,auxiliary,feature}.md
Rules:
REQUIRED: Load ../../references/audit-checks.md for full procedure.
| Scope | Command |
|---|---|
| Full system | audit C3 |
| Container | audit container c3-1 |
| ADR | audit adr adr-YYYYMMDD-slug |
Checks: Inventory vs code, categorization, reference validity, diagrams, ADR lifecycle
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