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> Documentation indexes by section:
> - APIs and SDKs: https://docusign.docs.buildwithfern.com/docs/llms.txt
> - Platform 101: https://docusign.docs.buildwithfern.com/platform/llms.txt
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> - Docusign CLI: https://docusign.docs.buildwithfern.com/docusign-cli/llms.txt
>
> Authentication (OAuth, JWT Grant, M2M): https://docusign.docs.buildwithfern.com/platform/auth
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>
> OpenAPI specifications: https://docusign.docs.buildwithfern.com/openapi.json
> MCP server: https://docusign.docs.buildwithfern.com/_mcp/server

# eSignature SOAP API Overview

Request signatures and sign documents using the most mature and robust SOAP API in the industry. The Docusign eSignature SOAP API has helped banks, credit unions, health care firms, and other security-focused companies automate their business-critical workflows for over 10 years.

## Places to start

[API 101](/docs/esign-soap-api/esign101)

[How-to guides](/docs/esign-soap-api/how-to)

[API reference](/docs/esign-soap-api/reference)

![](/_fern-files/_img/5f1e33e31149cb7ceffba5d335d37d2fd963b0442e1ca4bd496f3b13ff477208.webp)

## Features

### Compatible with other Docusign APIs and workflows

Use it with Docusign Admin to centralize user management and eSignature for Salesforce to seal the deal

### Integrates with the enterprise

Use it to implement digital signature solutions with your existing SOAP infrastructure

### Full-featured and robust

Take advantage of a wealth of API calls to implement virtually any scenario

## Discover more

* **[Test with SOAPUI](https://www.soapui.org/)**

* **[Test with Postman](https://www.postman.com/)**

* **[See how UD Group powered productivity and broker sales with Docusign eSignature API](https://www.docusign.com/sites/default/files/resource_event_files/Case%20Study-UD%20Group%20API.pdf)**