> 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

# Overview

> **Warning**
>
> Developing with the CLM API is only available for CLM customers with a production account. To purchase a plan to gain access to the CLM API, contact [Docusign Sales](https://www.docusign.com/contact-sales).

## API Base URLs

All API URLs use the following format:

>

```text
https://[base url]/[version]/[resource identifier]
```

Docusign CLM is distributed across several data centers. Base URLs for the Object, Task and Content APIs are data center specific. Base URLs for authentication are NOT data center specific. To prevent developers from having to store base URL information in their application code, the base URL for the Object and Task APIs is returned after a successful authentication request. Content API URLs are properties of the Document and Folder objects and are discoverable at run time.

The entry point for authentication regardless of data center is as follows:

>

**Production Authentication Endpoint**

```text
https://auth.springcm.com
```

**UAT Authentication Endpoint**

```text
https://authuat.springcm.com
```

As mentioned above, datacenter specific base URLs are passed back from a successful authentication call, however the URLs are also listed below for reference purposes. Note the datacenter of an account can be obtained by looking at the subdomain of the URL after logging into the Docusign CLM user interface (ie na11, na21, etc.). Additionally, the Docusign CLM API base URLs can be found within the Docusign CLM user interface by navigating to: **Help->SpringCM Resources**

## Production Endpoints

>

**Production Object API**

```text
https://api[datacenter].springcm.com
```

**Production Task API**

```text
https://api[datacenter].springcm.com
```

**Production Content Upload API**

```text
https://apiupload[datacenter].springcm.com
```

**Production Content Download API**

```text
https://apidownload[datacenter].springcm.com
```

## UAT Endpoints

>

**UAT Object API**

```text
https://apiuat[datacenter].springcm.com
```

**UAT Task API**

```text
https://apiuat[datacenter].springcm.com
```

**UAT Content Upload API**

```text
https://apiuploaduat[datacenter].springcm.com
```

**UAT Content Download API**

```text
https://apidownloaduat[datacenter].springcm.com
```

## Versioning

The authentication and application URLs are versioned separately. The current versions are:

>

**Authentication Current Version**

```text
v201606
```

**Application APIs Current Version**

```text
v201411
```

## Request/Response Formats

The Docusign CLM Object and Task APIs support JSON for all requests and responses. The Content API by default will download documents in the native format they were uploaded. For certain document types, Docusign CLM will also maintain a copy of the document in additional formats such as PDF, png, or text. See the [Content API](/docs/clm-api/clm.cm/clm101/content-api) documentation for more information.