Skip to main content
A CCC domain is a router skill. When you invoke a domain, it does not give Claude Code a single set of instructions — it dispatches to the right specialist sub-skill based on what your task actually needs. Think of a domain as an expert team lead who reads the brief and assigns the right specialist, rather than trying to do everything themselves. Each domain comes pre-loaded in the essential tier, so you have access to all 11 out of the box without installing anything extra.

All 11 domains

ccc-code

18 sub-skills — code generation, refactoring, review, patterns, and quality gates.

ccc-testing

15 sub-skills — TDD, Playwright E2E, Vitest, coverage reports, visual regression, load testing, and accessibility testing.

ccc-devops

20 sub-skills — GitHub Actions, Docker, AWS deploy, Terraform, Kubernetes, monitoring, logging, Nginx, SSL certs, rollback strategies.

ccc-saas

20 sub-skills — auth systems, billing/Stripe, API design, database schema, multi-tenancy, onboarding flows, admin dashboards, role-based access, webhooks, rate limiting, usage tracking, feature flags.

ccc-design

39 sub-skills — landing pages, UI audit, animation, responsive layout, color systems, typography, wireframes, component library, accessibility, dark mode, micro-interactions, design tokens.

ccc-seo

19 sub-skills — meta tags, JSON-LD schema, sitemap, robots.txt, Core Web Vitals, internal linking, keyword research, content optimization, image SEO, page speed, canonical URLs.

ccc-marketing

45 sub-skills — CRO, email campaigns, ad copy, social media, SEO content, blog posts, landing page copy, A/B testing, funnel optimization, lead magnets, newsletter, brand voice, press releases, case studies, video scripts.

ccc-security

9 sub-skills — OWASP top 10, secrets scanning, dependency audit, container security, penetration testing, CSP headers, rate limiting, auth hardening.

ccc-data

8 sub-skills — SQL optimization, data pipelines, analytics setup, data visualization, machine learning ops, reporting, data quality, vector search.

ccc-research

8 sub-skills — competitive analysis, market research, user research, technology evaluation, trend analysis, SWOT, stakeholder interviews, data synthesis.

ccc-mobile

8 sub-skills — React Native, Expo, mobile UI, push notifications, deep linking, app store optimization, offline-first, gesture handling.

Domain summary table

DomainSub-skillsPrimary focus
ccc-code18Code generation, refactoring, review
ccc-testing15TDD, E2E, coverage, regression
ccc-devops20CI/CD, Docker, deploy, monitoring
ccc-saas20Auth, billing, multi-tenant, schema
ccc-design39UI/UX, components, accessibility
ccc-seo19Meta tags, schema, Core Web Vitals
ccc-marketing45CRO, email, ads, content
ccc-security9OWASP, pen-test, compliance
ccc-data8SQL, analytics, visualization
ccc-research8Competitive analysis, market research
ccc-mobile8React Native, Expo

How to invoke a domain

ccc
Select Browse domains from the main menu, then pick the domain that matches your task. The domain router reads your task description and dispatches to the right sub-skill automatically.

How routing works inside a domain

When you invoke a domain, the router skill reads your task and selects the specialist sub-skill that best matches. You do not need to know which sub-skill to ask for — the router infers it from your description. For example, invoking ccc-saas with a task like “add Stripe billing with usage-based pricing” routes to the billing sub-skill rather than the auth or multi-tenancy sub-skill. The router uses keyword matching against the sub-skill directory structure to make this decision.
Individual skills inside CCC domains are still accessible directly by their original names via symlinks. If you know the exact sub-skill you need, you can load it without going through the router.

The Intelligence Layer and domains

The Intelligence Layer’s skill recommender is domain-aware. If your task description triggers domain-level keyword signals (such as “authentication”, “billing”, or “deploy”), the relevant domain router ranks highly in the skill recommendation output. You will often see a domain recommended before you even open the domain browser.
Domains are included in the essential install tier. You get all 11 routers by default without any additional install steps.