Look up External Partner API endpoints, parameters, schemas, and error codes.

The External Partner API is a REST API that uses standard HTTP methods and returns JSON responses. Use the topics in this section to look up endpoints, query parameters, request body fields, response schemas, and error codes.

For the exact schema name and structure of any request or response object, including envelope schemas like FilingsListEnvelope or TransactionImportCreateEnvelope, see the linked OpenAPI reference in the next section.