ln-113-backend-docs-creator

OpenAPI-style API specifications are generated automatically from your project's backend context. This Skill creates an api_spec.md file in OpenAPI 3.0 format, extracting endpoint definitions, request/response schemas, and authentication details from coordinator-provided backend data to produce standards-compliant API documentation.

Yes, this Skill generates database_schema.md with Mermaid ER diagrams and a data dictionary. It automatically produces entity relationships, field definitions, and cardinality from your database context, requiring only that hasDatabase is true and the coordinator supplies the schema data.

Your project needs backend and/or database context supplied by the project docs coordinator (ln-110). The Skill operates conditionally: it generates api_spec.md only if hasBackend is true and database_schema.md only if hasDatabase is true. Both templates are applied idempotently with placeholder substitution.

The Skill produces idempotent file creation and includes self-validation with phase checks and status reporting. Documentation is generated from coordinator-provided context snapshots; staying synchronized depends on re-running the Skill when your backend or database context changes.

The Skill returns file paths (docs/project/api_spec.md and docs/project/database_schema.md) for downstream linking and integration. These files use OpenAPI 3.0 format and Mermaid syntax respectively, making them compatible with documentation sites, API gateways, and schema visualization tools.