external-resource-context

# External Resource Context ## Purpose Repository evidence does not contain every external resource surrounding a system. This skill captures, in a deterministic location, the **access methods** to resources outside the repository so downstream work (design, planning, implementation, review) can reach them without repeatedly rediscovering access details. Resources covered: design origin (where the canonical visual specification lives), design system (component library and tokens), guidelines (usage docs, accessibility rules), visual verification environment (how to confirm rendering), database schema source, migration history, secret store location, API schema source (OpenAPI / proto / GraphQL SDL), mock environment, IaC source, environment configuration. ## Storage Locations (Two-Tier) | Tier | Location | Holds | Update Frequency | |------|----------|-------|------------------| | Project | `docs/project-context/external-resources.md` | Environment-stable facts: which resources exist for this project and how to access them (URL, MCP name, file path, command) | Rare — only when the project's environment changes | | Feature | `## External Resources Used` section inside the relevant UI Spec or Design Doc | The subset of project-tier resources actually used by this feature, plus feature-specific identifiers (e.g., a specific node id within the design tool, a specific endpoint path) | Per feature | ### Single Source of Truth Rule The project tier owns environment facts. Fea...