> For clean Markdown of any page, append .md to the page URL.
> For a complete documentation index, see https://developers.hellosign.com/llms.txt.
> For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://developers.hellosign.com/_mcp/server.

> Quick reference for the Dropbox Sign .NET SDK — install, authenticate, and find links to docs and examples.

# .NET SDK

The official Dropbox Sign .NET SDK is generated from our [OpenAPI specification](https://github.com/hellosign/hellosign-openapi/blob/main/openapi.yaml) and provides full API coverage.

## Install

```bash
dotnet add package Dropbox.Sign
```

Package: [`Dropbox.Sign`](https://www.nuget.org/packages/Dropbox.Sign) on NuGet

## Authenticate

Create a configuration, then pass it to API classes:

```csharp
var config = new Configuration();
config.Username = "YOUR_API_KEY";

var signatureRequestApi = new SignatureRequestApi(config);
```

```csharp
var config = new Configuration();
config.AccessToken = "YOUR_ACCESS_TOKEN";

var signatureRequestApi = new SignatureRequestApi(config);
```

## Resources

* [GitHub repository](https://github.com/hellosign/dropbox-sign-dotnet)
* [Per-method reference docs](https://github.com/hellosign/dropbox-sign-dotnet/tree/main/docs)
* [Working examples](https://github.com/hellosign/dropbox-sign-dotnet/tree/main/examples)
* [Migration guide](/docs/sdks/migration-guides/net) (for users of the legacy `HelloSign` package)