---
title: OpenID Connect RP-initiated logout endpoint
description: The OpenID Connect RP-Initiated Logout endpoint provides OAuth clients a way to request that the OP perform a federated logout.
component: pingfederate
version: 13.0
page_id: pingfederate:developers_reference_guide:pf_openid_connect_rp_logout_endpoint
canonical_url: https://docs.pingidentity.com/pingfederate/13.0/developers_reference_guide/pf_openid_connect_rp_logout_endpoint.html
revdate: December 12, 2023
section_ids:
  endpoint-idpinit_logout-openid: "Endpoint: /idp/init_logout.openid"
---

# OpenID Connect RP-initiated logout endpoint

The OpenID Connect RP-Initiated Logout endpoint provides OAuth clients a way to request that the OP perform a federated logout.

## Endpoint: /idp/init\_logout.openid

This endpoint supports the HTTP GET and POST methods. When using the HTTP POST method, the required `Content-Type` value is `application/x-www-form-urlencoded`.

The following table describes the parameters for this endpoint.

| Parameter                  | Description                                                                                                                                                                                                                                                                                                                                                                                  |
| -------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| `id_token_hint`            | An optional parameter containing an ID Token previously issued by PingFederate to the relying party (RP). If this parameter is not included or cannot be validated, the user will be prompted to confirm the logout request.                                                                                                                                                                 |
| `client_id`                | An optional parameter containing the ID of the client that is requesting logout. This parameter must be included if an encrypted `id_token_hint` is provided.                                                                                                                                                                                                                                |
| `post_logout_redirect_uri` | An optional URI where the user's browser should be redirected after a logout has been performed. If this parameter is provided, either `client_id` or `id_token_hint` must also be included, so that PingFederate can determine the client that is requesting logout. The requested `post_logout_redirect_uri` must match one of the values registered for the client or it will be ignored. |
| `state`                    | An optional value used by the relying party to maintain state between the logout request and the callback to the `post_logout_redirect_uri`. If included in the logout request, PingFederate passes this value as the `state` parameter when redirecting back to the relying party.                                                                                                          |
| `ui_locales`               | An optional parameter indicating the user's preferred languages for the user interface, represented as a space-separated list of BCP47 (RFC5646) language tag values, ordered by preference. For instance, the value "fr-CA fr en" represents a preference for French as spoken in Canada, then French (without a region designation), followed by English (without a region designation).   |