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

# Authenticate

> Verify participant identity through an approved authentication integration.

Use **Authenticate** before steps that require verified participant identity. A participant stating a name or account number is not verification.

## Configure

1. Select the **MCP connection**, **Authentication challenge**, and **Trusted verifier**.
2. Bind the inputs required by the selected integration.
3. Route both `authenticated` and `denied`, and handle `error` and `timeout`.

Use the trusted verification result to admit the participant to protected steps. Keep denied routes away from account-specific information and actions.

## Outcomes

| Outcome | Meaning |
| - | - |
| `authenticated` | The configured integration verified the participant. |
| `denied` | Verification did not grant access. |
| `error` / `timeout` | Verification failed to run or exceeded its execution limit. |

## Scenario: protect an account lookup

A support workflow needs to read account-specific order details. Collect the integration's required challenge information, then run Authenticate before the lookup [Call MCP tool](https://docs.livefaces.ai/workflows/nodes/call-mcp-tool.md).

Connect `authenticated` to the lookup. Connect `denied` to a general support message that does not reveal account data, then finish or provide an alternative support route. Authentication verifies identity; pair a later write action with [Confirm action](https://docs.livefaces.ai/workflows/nodes/confirm-action.md) to obtain approval for that specific change.


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