> ## Documentation Index
> Fetch the complete documentation index at: https://docs.4mica.io/llms.txt
> Use this file to discover all available pages before exploring further.

# List supported payment kinds

> List schemes, networks, and x402 versions accepted by the facilitator.

`GET /supported`

Check this endpoint before advertising a payment option or enabling a network.

## Responses

<ResponseField name="kinds" type="array" required />

<ResponseField name="kinds[].scheme" type="string" required />

<ResponseField name="kinds[].network" type="string" required />

<ResponseField name="kinds[].x402Version" type="number" />

<ResponseField name="kinds[].extra" type="object" nullable />

<ResponseField name="extensions" type="array" required />

<ResponseField name="signers" type="object" required />

<RequestExample>
  ```bash cURL theme={null}
  curl "https://x402.4mica.xyz/supported"
  ```

  ```javascript title="Fetch" theme={null}
  const response = await fetch("https://x402.4mica.xyz/supported");
  console.log(await response.json());
  ```

  ```javascript title="Axios" theme={null}
  import axios from "axios";
  const { data } = await axios.get("https://x402.4mica.xyz/supported");
  console.log(data);
  ```

  ```python Python theme={null}
  import requests
  print(requests.get("https://x402.4mica.xyz/supported").json())
  ```

  ```go Go theme={null}
  package main
  import ("fmt"; "io"; "net/http")
  func main() {
    response, _ := http.Get("https://x402.4mica.xyz/supported")
    defer response.Body.Close()
    body, _ := io.ReadAll(response.Body)
    fmt.Println(string(body))
  }
  ```
</RequestExample>

<ResponseExample>
  ```json 200 OK theme={null}
  {
    "kinds": [
      { "scheme": "4mica-credit", "network": "eip155:8453", "x402Version": 1 },
      { "scheme": "4mica-credit", "network": "eip155:8453", "x402Version": 2 },
      { "scheme": "4mica-credit", "network": "eip155:84532", "x402Version": 1 },
      { "scheme": "4mica-credit", "network": "eip155:84532", "x402Version": 2 }
    ],
    "extensions": [],
    "signers": {}
  }
  ```

  ```json 500 Internal Server Error theme={null}
  { "error": "Unable to load supported payment kinds" }
  ```
</ResponseExample>

## Status codes

| Code  | Description                                      |
| ----- | ------------------------------------------------ |
| `200` | Supported payment kinds were returned.           |
| `500` | The facilitator could not load its capabilities. |

Network values use <Tooltip headline="CAIP-2" tip="Chain Agnostic Improvement Proposal 2: a standard format for identifying blockchain networks, such as eip155:8453 for Base.">CAIP-2</Tooltip> identifiers. See
[supported networks](/getting-started/supported-networks) for current values.