The

id_token

and

id_token_hint

are related but serve different purposes in the OpenID Connect (OIDC) flow. Let me explain their differences and relationship: 1. `id_token`: This is an OpenID Connect token issued by the authorization server that contains claims about the authentication of an end-user [OAuth2 authorization code flow](https://www.ory.sh/docs/oauth2-oidc/authorization-code-flow#modifying-the-authorization-code-flow). It's obtained during the authentication process when you include the

openid

scope in your request. 2. `id_token_hint`: This is an optional parameter used in OIDC logout requests. It's a previously issued ID token that's passed as a hint about the user's current or past authenticated session with the client [OpenID Connect logout](https://www.ory.sh/docs/oauth2-oidc/oidc-logout#send-the-id-token-in-id_token_hint). To answer your questions directly: 1. No, the

id_token

is not the same as

id_token_hint

. The

id_token

is the actual token containing user information, while

id_token_hint

is a parameter used in logout requests that contains a previously issued

id_token

. 2. Yes, you can use the

id_token

you have as the

id_token_hint

. In fact, it's recommended to always send the

id_token_hint

parameter in the logout request to avoid issues with multiple sessions or when the session cookie is no longer available [OpenID Connect logout](https://www.ory.sh/docs/oauth2-oidc/oidc-logout#send-the-id-token-in-id_token_hint). So, while they're not the same thing, you can use your

id_token

as the

id_token_hint

when making a logout request to help identify the user's session and ensure proper logout.

To set the max-age of an Ory Hydra session cookie, you need to configure the session lifespan. Here's how you can do it: 1. Using the Ory CLI: You can set the session lifespan using the Ory CLI by updating the OAuth2 configuration. Here's an example command:

ory patch oauth2-config --project <project-id> --workspace <workspace-id> \   --replace "/ttl/access_token=\"2h\"" \   --format yaml

In this example, the access token (which is related to the session) is set to expire after 2 hours [Configure token expiration time](https://www.ory.sh/docs/hydra/guides/client-token-expiration). 2. Using the configuration file: If you're working with a configuration file, you can set the

ttl.access_token

value. Here's an example snippet:

yaml ttl:   access_token: "1h0m0s"

This sets the access token (and related session) to expire after 1 hour [Ory OAuth2 unavailable on new project](https://github.com/ory/network/issues/185). It's important to note that the session cookie's max-age is typically tied to the access token's lifespan in Ory Hydra. By setting the access token's TTL (Time To Live), you're effectively setting the session cookie's max-age. Remember that the exact behavior might depend on your specific Ory Hydra configuration and version. If you need more precise control over the cookie settings, you might want to check the

serve.cookies

configuration section in your Ory Hydra setup [Ory OAuth2 unavailable on new project](https://github.com/ory/network/issues/185).

Based on the information provided in the knowledge sources, the default TTL (Time To Live) for access tokens in Ory Hydra is 1 hour (1h0m0s). This can be seen in the configuration snippet from the [Ory OAuth2 unavailable on new project](https://github.com/ory/network/issues/185) issue:

yaml "ttl": {   "access_token": "1h0m0s",

Additionally, this is confirmed in the [Configure token expiration time](https://www.ory.sh/docs/hydra/guides/client-token-expiration) documentation, which states: "By default, the access token in Ory lasts for one hour." It's important to note that while this is the default setting, it can be customized using the Ory CLI or by modifying the configuration file as needed for your specific use case.

I apologize, but I don't have enough information to definitively answer why ListRelationTuples is working for subject queries but not for object queries in your specific case. However, I can provide some general information about the ListRelationTuples functionality in Ory Keto (which implements the Zanzibar model) that might help you troubleshoot the issue. The ListRelationTuples API in Ory Keto allows you to query relationships based on various parameters, including both subjects and objects. According to the [Ory Keto API Reference](https://www.ory.sh/docs/keto/reference/rest-api), the ListRelationTuples endpoint (GET /relation-tuples) accepts the following query parameters: - namespace - object - relation - subject_id - subject_set.namespace - subject_set.object - subject_set.relation All of these parameters are optional, which means you should be able to query by object as well as by subject. If you're experiencing issues when querying by object, here are a few things to consider: 1. Make sure you're using the correct parameter name:

object

(not

object_id

or something similar). 2. Check that the object you're querying for actually exists in the namespace you're querying. 3. Ensure that you have the necessary permissions to query the relationships involving that object. 4. Verify that you're not hitting any pagination limits. The API supports pagination with

page_size

and

page_token

parameters [Ory Keto API Reference](https://www.ory.sh/docs/keto/reference/rest-api). 5. If you're using the CLI, make sure you're using the correct command syntax. The [ory list relationships](https://www.ory.sh/docs/cli/ory-list-relationships) command supports an

--object

flag for querying by object. If you're still experiencing issues, you might want to check the Ory Keto logs for any error messages or unexpected behavior. Additionally, you could try using the [expand API](https://www.ory.sh/docs/keto/concepts/api-overview#expand-subject-sets) as an alternative way to retrieve relationships involving a specific object. Without more specific information about your setup and the exact queries you're trying to run, it's difficult to pinpoint the exact cause of the problem. If the issue persists, you might want to reach out to Ory's support channels or community forums with more details about your specific use case and the queries you're attempting.

Based on the provided Go gRPC query, it appears that you're trying to list relation tuples for a subject, not an object. Let me explain: The query you've shown is using the

ListRelationTuples

method, which is part of the Ory Keto API. However, the structure of your query is set up to search for relationships where the given UUID is the subject, not the object. Here's a breakdown of your query:

go ListRelationTuples(ctx, &rts.ListRelationTuplesRequest{     RelationQuery: &rts.RelationQuery{         Namespace: proto.String("role"),         Relation:  proto.String("member"),         Subject:   &rts.Subject{Ref: &rts.Subject_Id{Id: uuid}},     }

This query is asking for all relationships in the "role" namespace where: - The relation is "member" - The subject is the provided UUID If you want to query for an object instead, you should modify your query to use the

Object

field instead of the

Subject

field. Here's how you could modify it to query for an object:

go ListRelationTuples(ctx, &rts.ListRelationTuplesRequest{     RelationQuery: &rts.RelationQuery{         Namespace: proto.String("role"),         Relation:  proto.String("member"),         Object:    proto.String(uuid),     }

This modified query would look for all relationships in the "role" namespace where: - The relation is "member" - The object is the provided UUID Remember, according to the [Ory Keto API Reference](https://www.ory.sh/docs/keto/reference/rest-api), the

ListRelationTuples

method allows you to query by various parameters, including both subject and object. The key is to use the correct field (

Object

instead of

Subject

) when you want to query by object. If you're specifically trying to query for an object and not a subject, make sure to use the

Object

field in your

RelationQuery

as shown in the modified example above.