> ## 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.

# Providers

> Provider information endpoints

## Overview

Provider information endpoints

### Available Operations

* [list](#list) - List all providers

## list

List all providers

### Example Usage

```python theme={null}
from openrouter import OpenRouter
import os


with OpenRouter(
    http_referer="<value>",
    x_open_router_title="<value>",
    x_open_router_categories="<value>",
    api_key=os.getenv("OPENROUTER_API_KEY", ""),
) as open_router:

    res = open_router.providers.list()

    # 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.<br />This is used to track API usage per application.<br /> |
| `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.<br />                                                          |
| `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.<br />                                                 |
| `retries`                  | [Optional\[utils.RetryConfig\]](../../models/utils/retryconfig.mdx) | :heavy\_minus\_sign: | Configuration to override the default retry behavior of the client.                                                                                         |

### Response

**[operations.ListProvidersResponse](../../operations/listprovidersresponse.mdx)**

### Errors

| Error Type                         | Status Code | Content Type     |
| ---------------------------------- | ----------- | ---------------- |
| errors.InternalServerResponseError | 500         | application/json |
| errors.OpenRouterDefaultError      | 4XX, 5XX    | \*/\*            |