Medplum

# Medplum GraphiQL This is the code for [https://graphiql.medplum.com](https://graphiql.medplum.com) ## Schema The FHIR GraphQL schema is approximately 40 MB of compact JSON. It is large, and computationally expensive. The Medplum production servers disable GraphQL schema queries to reduce the risk of service interruption. However, GraphiQL needs the schema for helpful functionality such as tooltips and autocomplete. To use GraphiQL on localhost, you need a copy of the schema. Historically to get the schema locally, you needed to manually download the schema yourself, but this is no longer the case. The schema will be retrieved automatically at runtime from the URL present in the `MEDPLUM_INTROSPECTION_URL` environment variable. By default, the `.env.defaults` dotenv file comes with `MEDPLUM_INTROSPECTION_URL` set to the official Medplum-hosted schema at https://graphiql.medplum.com/schema/schema-latest.json, so you don't need to configure anything yourself. ## Schema Regeneration Although almost never necessary, you can manually regenerate the schema from the current GraphQL model by following the following instructions: 1. Make sure your Medplum user account has access to GraphQL schema/introspection queries 2. Disable the `operationName === 'IntrospectionQuery'` guard in `src/index.tsx` 3. Start the GraphiQL dev server 4. Open the GraphiQL app in your web browser 5. Use your web browser "Network" tools to find the introspection query 6. Save the output of that request as "schema-x.json" 7. Update `src/index.tsx` with the new schema filename 8. Re-enable the `operationName === 'IntrospectionQuery'` guard in `src/index.tsx` TODO: Automate these steps