marimo + openapi

The frontend of marimo communicates with the backend through an OpenAPI specification, which can be found in packages/openapi/api.yaml.

Printing the OpenAPI schema

marimo development openapi

Writing a new OpenAPI schema

To modify the schema, add the type under _generate_server_api_schema in commands.py and run

marimo development openapi > packages/openapi/api.yaml

Validating an OpenAPI schema

pipx install openapi-spec-validator
marimo development openapi | openapi-spec-validator -

Generating a client from an OpenAPI schema

make fe-codegen

You will then need to reinstall the package in /frontend:

cd frontend
pnpm update @marimo-team/marimo-api