# DEVELOPER DOCUMENTATION

This section contains the **eSAW One-Shot** OpenAPI specification and Postman collection.

## API and resources

- **[eSAW One-Shot OpenAPI specification](/products/namirialpkiaas/esaw-one-shot/openapi)** — Full API definition (create request, file upload, envelope send).
- **[Postman collection](/products/namirialpkiaas/esaw-one-shot/enterprise-documentation/developer-documentation/resources/postman)** — Quick testing with preconfigured requests.


Use [GET STARTED](/products/namirialpkiaas/esaw-one-shot/enterprise-documentation/get-started/overview) first for endpoints and authentication (client certificate and ApiToken).