| name | external-resource-context |
| description | Records where resources outside the repository live (design source, design system, API schema, IaC source, secret store) and how design, implementation, and verification reach them. Use when work depends on an external resource, or when the user mentions design source, design system, API schema, IaC source, secret store, or canonical source. |
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. Feature-tier sections list only feature-specific identifiers (node id within the design source, specific endpoint path within the API, specific IaC module name) and reference project-tier entries by label; URLs, MCP names, and access commands remain in the project-tier file. When the environment changes, only the project-tier file is updated.
