> ## Documentation Index
> Fetch the complete documentation index at: https://developers.redo.com/llms.txt
> Use this file to discover all available pages before exploring further.

# ServiceUserCredential

> Something a service account authenticates with: an API key, a public key, or a federated policy. Each has the service account's scopes.

**Implemented by:** [`ServiceUserApiKey`](https://developers.redo.com/docs/api-reference/v3/reference/service-users/service-user-api-key), [`ServiceUserFederatedPolicy`](https://developers.redo.com/docs/api-reference/v3/reference/service-users/service-user-federated-policy), [`ServiceUserPublicKey`](https://developers.redo.com/docs/api-reference/v3/reference/service-users/service-user-public-key)

**createdAt** `[DateTime!](/docs/api-reference/v3/reference/common/date-time)` *required*

When the credential was created.

**id** `ID!` *required*

The id of this credential.

**lastUsedAt** `[DateTime](/docs/api-reference/v3/reference/common/date-time)`

When the credential last authenticated, or null if it never has.

**name** `String!` *required*

A label that helps recognize the credential.


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