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

# One-time access

> Give one Action temporary provider access without saving a reusable credential.

One-time access is the default when a provider and capability support it. The user signs in or supplies a credential for the current interaction, and Darwin expires or consumes that assignment after the bounded work finishes.

## Bind the temporary grant

```text theme={null}
connection_required -> review provider and scopes -> authorize once
                    -> resolve during execution -> expire assignment
```

The grant is limited to the current user, AI, capability revision, Action, interaction, provider, and requested scopes. It cannot silently become reusable access.

## Save only by a separate choice

If the user later chooses “Save in Darwin Vault,” Darwin requests explicit consent and creates a new Vault item and grant. Conversation text, a tool argument, or the remote AI cannot upgrade one-time access into persistent access.

For provider authorization-code flows, continue with [OAuth](/docs/act/connections/oauth).