Yichus / Reference / API MCP tools

api_world_shape

Describe the in-memory world api_why and api_conformance_check run IO handlers in: per table, the row type, whether the row under an id is one record or the whole list, the record's fields, the id rule, the principal's JSON form and the enum form. Facts about the declared types, never about a run; read it before writing rows or inputs.

Kind: WorldShape. Origin: Yichus/Mcp::catalog.

CLI: yichus why --shape — the same world shape behind the why command's --shape flag.

Parameters

• sources (required, array) — JSON array of {fileName, source} Bosatsu files for the module.

Read the result according to this tool’s scope: static checks, bounded execution checks, and descriptive diagrams answer different questions. A successful call is not a general approval of the program. The safety and permissions guide compares the checks and provides editable ownership, guard, and role examples.