> ## Documentation Index
> Fetch the complete documentation index at: https://fastmcp-ts.docs.prefect.io/llms.txt
> Use this file to discover all available pages before exploring further.

# ClientSecretAuthMethod

```ts theme={null}
type ClientSecretAuthMethod = "client_secret_post" | "client_secret_basic";
```

Defined in: [client/auth.ts:501](https://github.com/PrefectHQ/fastmcp-ts/blob/e4b6038f642b529f601463a576229747afebe9a4/src/client/auth.ts#L501)

Token-endpoint authentication method for a shared client secret.