> ## Documentation Index > Fetch the complete documentation index at: https://openrouter.ai/docs/llms.txt > Use this file to discover all available pages before exploring further. # Endpoints > Endpoint information ## Overview Endpoint information ### Available Operations * [list\_zdr\_endpoints](#list_zdr_endpoints) - Preview the impact of ZDR on the available endpoints * [list](#list) - List all endpoints for a model ## list\_zdr\_endpoints Preview the impact of ZDR on the available endpoints ### Example Usage ```python theme={null} from openrouter import OpenRouter import os with OpenRouter( http_referer="", x_open_router_title="", x_open_router_categories="", api_key=os.getenv("OPENROUTER_API_KEY", ""), ) as open_router: res = open_router.endpoints.list_zdr_endpoints() # Handle response print(res) ``` ### Parameters | Parameter | Type | Required | Description | | -------------------------- | ------------------------------------------------------------------- | -------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------- | | `http_referer` | *Optional\[str]* | :heavy\_minus\_sign: | The app identifier should be your app's URL and is used as the primary identifier for rankings.
This is used to track API usage per application.
| | `x_open_router_title` | *Optional\[str]* | :heavy\_minus\_sign: | The app display name allows you to customize how your app appears in OpenRouter's dashboard.
| | `x_open_router_categories` | *Optional\[str]* | :heavy\_minus\_sign: | Comma-separated list of app categories (e.g. "cli-agent,cloud-agent"). Used for marketplace rankings.
| | `retries` | [Optional\[utils.RetryConfig\]](../../models/utils/retryconfig.mdx) | :heavy\_minus\_sign: | Configuration to override the default retry behavior of the client. | ### Response **[operations.ListEndpointsZdrResponse](../../operations/listendpointszdrresponse.mdx)** ### Errors | Error Type | Status Code | Content Type | | ---------------------------------- | ----------- | ---------------- | | errors.ForbiddenResponseError | 403 | application/json | | errors.InternalServerResponseError | 500 | application/json | | errors.OpenRouterDefaultError | 4XX, 5XX | \*/\* | ## list List all endpoints for a model ### Example Usage ```python theme={null} from openrouter import OpenRouter import os with OpenRouter( http_referer="", x_open_router_title="", x_open_router_categories="", api_key=os.getenv("OPENROUTER_API_KEY", ""), ) as open_router: res = open_router.endpoints.list(author="openai", slug="gpt-4") # Handle response print(res) ``` ### Parameters | Parameter | Type | Required | Description | Example | | -------------------------- | ------------------------------------------------------------------- | -------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------- | ------- | | `author` | *str* | :heavy\_check\_mark: | The author/organization of the model | openai | | `slug` | *str* | :heavy\_check\_mark: | The model slug | gpt-4 | | `http_referer` | *Optional\[str]* | :heavy\_minus\_sign: | The app identifier should be your app's URL and is used as the primary identifier for rankings.
This is used to track API usage per application.
| | | `x_open_router_title` | *Optional\[str]* | :heavy\_minus\_sign: | The app display name allows you to customize how your app appears in OpenRouter's dashboard.
| | | `x_open_router_categories` | *Optional\[str]* | :heavy\_minus\_sign: | Comma-separated list of app categories (e.g. "cli-agent,cloud-agent"). Used for marketplace rankings.
| | | `retries` | [Optional\[utils.RetryConfig\]](../../models/utils/retryconfig.mdx) | :heavy\_minus\_sign: | Configuration to override the default retry behavior of the client. | | ### Response **[operations.ListEndpointsResponse](../../operations/listendpointsresponse.mdx)** ### Errors | Error Type | Status Code | Content Type | | ---------------------------------- | ----------- | ---------------- | | errors.ForbiddenResponseError | 403 | application/json | | errors.NotFoundResponseError | 404 | application/json | | errors.InternalServerResponseError | 500 | application/json | | errors.OpenRouterDefaultError | 4XX, 5XX | \*/\* |