> For the complete documentation index, see [llms.txt](https://docs.fastrouter.ai/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.fastrouter.ai/api-reference/list-providers.md).

# List Providers

## List Providers

> Returns the list of providers (e.g. OpenAI, Anthropic, Google AI Studio) available through FastRouter, with their machine-readable \`provider\_id\` and human-readable \`label\`.\
> \
> Use the returned \`provider\_id\` values with the \`provider.only\` / \`provider.order\` fields in chat/completions and other endpoints.

```json
{"openapi":"3.1.0","info":{"title":"FastRouter API Reference","version":"1.0.0"},"tags":[{"name":"Models","description":"List and retrieve available AI models with pricing and capability information."}],"servers":[{"url":"https://api.fastrouter.ai","description":"Production API"}],"security":[],"paths":{"/api/v1/providers":{"get":{"operationId":"listProviders","tags":["Models"],"summary":"List Providers","description":"Returns the list of providers (e.g. OpenAI, Anthropic, Google AI Studio) available through FastRouter, with their machine-readable `provider_id` and human-readable `label`.\n\nUse the returned `provider_id` values with the `provider.only` / `provider.order` fields in chat/completions and other endpoints.","parameters":[],"responses":{"200":{"description":"List of providers","content":{"application/json":{"schema":{"type":"object","properties":{"data":{"type":"array","items":{"type":"object","properties":{"provider_id":{"type":"string"},"label":{"type":"string"}}}}}}}}},"429":{"$ref":"#/components/responses/RateLimitError"},"500":{"description":"Internal Server Error"}}}}},"components":{"responses":{"RateLimitError":{"description":"Rate Limited - You have exceeded your request limits (TPM/RPM). Slow down or increase your limits.","content":{"application/json":{"schema":{"type":"object","properties":{"error":{"type":"object","properties":{"message":{"type":"string"},"type":{"type":"string"},"code":{"type":"string"},"status":{"type":"integer"}}}}}}}}}}}
```


---

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