> You are reading the Docusign Developer Documentation. For clean Markdown of any page, append .md to the page URL.
>
> 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
> - Extension Apps: https://docusign.docs.buildwithfern.com/extension-apps/llms.txt
> - Docusign CLI: https://docusign.docs.buildwithfern.com/docusign-cli/llms.txt
>
> Authentication (OAuth, JWT Grant, M2M): https://docusign.docs.buildwithfern.com/platform/auth
> Webhooks and Connect: https://docusign.docs.buildwithfern.com/platform/webhooks
>
> OpenAPI specifications: https://docusign.docs.buildwithfern.com/openapi.json
> MCP server: https://docusign.docs.buildwithfern.com/_mcp/server

# Trust Service Provider (TSP) API

## Docs

- [TSP API 101 Overview](https://developers.docusign.com/docs/tsp-api/tsp101.md)
- [Trust Service Provider Concepts](https://developers.docusign.com/docs/tsp-api/tsp101/concepts.md)
- [Getting started with your TSP integration](https://developers.docusign.com/docs/tsp-api/tsp101/get-started.md)
- [TSP API Flow](https://developers.docusign.com/docs/tsp-api/tsp101/api-flow.md)
- [Long term validation of PDF signatures](https://developers.docusign.com/docs/tsp-api/tsp101/long-term-signature-validation.md)
- [CMS service API](https://developers.docusign.com/docs/tsp-api/tsp101/cms-service-api.md)
- [Authentication](https://developers.docusign.com/docs/tsp-api/tsp101/tsp-authentication.md): The TSP Partner program enables Trust Service Providers to integrate their solution directly into the Docusign eSignature experience.
- [Design Standards Overview](https://developers.docusign.com/docs/tsp-api/tsp101/design-standards-overview.md)
- [Design Standards Requirements](https://developers.docusign.com/docs/tsp-api/tsp101/design-standards-requirements.md)
- [TSP API Reference](https://developers.docusign.com/docs/tsp-api/reference.md)
- [Get TSP User Information](https://developers.docusign.com/docs/tsp-api/reference/get-tsp-user-information.md)
- [TSP Sign Hash Session Information](https://developers.docusign.com/docs/tsp-api/reference/sign-hash-session-information.md)
- [TSP Complete Sign Hash Session Information](https://developers.docusign.com/docs/tsp-api/reference/complete-sign-hash-session-information.md)
- [POST SignedAttributes](https://developers.docusign.com/docs/tsp-api/reference/post-signed-attributes.md)
- [POST CMS](https://developers.docusign.com/docs/tsp-api/reference/post-cms.md)
- [Update Transaction](https://developers.docusign.com/docs/tsp-api/reference/update-transaction.md)
- [Create Files](https://developers.docusign.com/docs/tsp-api/reference/create-files.md): Discover how to upload the evidence files to Docusign's secure storage system for use in digital signature transactions.


> **Note:** This page contains both a page directory (above) and the landing page content (below). The page directory is generated for agent use and does not appear on the landing page.

> You are reading the Docusign Developer Documentation. For clean Markdown of any page, append .md to the page URL.
>
> 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
> - Extension Apps: https://docusign.docs.buildwithfern.com/extension-apps/llms.txt
> - Docusign CLI: https://docusign.docs.buildwithfern.com/docusign-cli/llms.txt
>
> Authentication (OAuth, JWT Grant, M2M): https://docusign.docs.buildwithfern.com/platform/auth
> Webhooks and Connect: https://docusign.docs.buildwithfern.com/platform/webhooks
>
> OpenAPI specifications: https://docusign.docs.buildwithfern.com/openapi.json
> MCP server: https://docusign.docs.buildwithfern.com/_mcp/server

# TSP Partner Program

> The TSP Partner program enables Trust Service Providers to integrate their solution directly into the Docusign eSignature experience.

## TSP Partner Program

Enable seamless experience between Trust Service Providers and Docusign Digital Transaction Management. The TSP Partner Program allows you to keep your branding while having the security of Docusign solutions.

## Places to start

[API 101](/docs/tsp-api/tsp101)

[Design standards](/docs/tsp-api/tsp101/design-standards-overview)

[API Reference](/docs/tsp-api/reference)

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

## Features

### Optional Access Authentication

Secure your client’s information and ensure the correct person is looking at the document

### Room to show your branding

From header to footer, clients will know it is you

### Automatic screen adjustments

Modal width automatically adjusts with respect to narrow screens

## Discover more

* **[Read up on how Docusign reaches BCR Approval](https://www.docusign.com/blog/docusign-reaches-another-milestone-global-expansion-bcr-approval/)**