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# Get A2A Agent Card

GET https://api.runtype.com/v1/products/{productId}/surfaces/{surfaceId}/a2a/.well-known/agent-card.json

Public A2A Protocol Agent Card discovery endpoint describing an A2A surface and its skills. No authentication required.

Reference: https://docs.runtype.com/api-reference/runtype-api/a-2-a/get-a-2-a-agent-card

## Authentication

- `Authorization` header (bearer token, required) — API key or Clerk session token

## Servers

- `https://api.runtype.com` (Production, default)
- `https://api.runtype-staging.com` (Staging)

## Request

### Path parameters

- `productId` (string, required)
- `surfaceId` (string, required)

## Response

### 200

Agent Card

- `authentication` (V1ProductsProductIdSurfacesSurfaceIdA2AWellKnownAgentCardJsonGetResponsesContentApplicationJsonSchemaAuthentication, required)
- `capabilities` (V1ProductsProductIdSurfacesSurfaceIdA2AWellKnownAgentCardJsonGetResponsesContentApplicationJsonSchemaCapabilities, required)
- `defaultInputModes` (list of string, required)
- `defaultOutputModes` (list of string, required)
- `description` (string, required)
- `name` (string, required)
- `protocolVersion` (string, required)
- `skills` (list of V1ProductsProductIdSurfacesSurfaceIdA2AWellKnownAgentCardJsonGetResponsesContentApplicationJsonSchemaSkillsItems, required)
- `url` (string, required)
- `version` (string, required)
- `iconUrl` (string, optional)
- `provider` (V1ProductsProductIdSurfacesSurfaceIdA2AWellKnownAgentCardJsonGetResponsesContentApplicationJsonSchemaProvider, optional)

## Errors

### 404 Not Found Error

Agent or A2A surface not found

- `error` (string, required)
- `code` (string, optional) — Stable error code. `insufficient_scope` marks an API key that lacks a scope this request needs.
- `details` (list of ErrorDetailsItems, optional)
- `requiredScopes` (list of string, optional) — On `insufficient_scope`: every API key scope this request needs.

### 500 Internal Server Error

Internal server error

- `error` (string, required)
- `code` (string, optional) — Stable error code. `insufficient_scope` marks an API key that lacks a scope this request needs.
- `details` (list of ErrorDetailsItems, optional)
- `requiredScopes` (list of string, optional) — On `insufficient_scope`: every API key scope this request needs.

## Types

### V1ProductsProductIdSurfacesSurfaceIdA2AWellKnownAgentCardJsonGetResponsesContentApplicationJsonSchemaAuthentication

### V1ProductsProductIdSurfacesSurfaceIdA2AWellKnownAgentCardJsonGetResponsesContentApplicationJsonSchemaCapabilities

### V1ProductsProductIdSurfacesSurfaceIdA2AWellKnownAgentCardJsonGetResponsesContentApplicationJsonSchemaSkillsItems

### V1ProductsProductIdSurfacesSurfaceIdA2AWellKnownAgentCardJsonGetResponsesContentApplicationJsonSchemaProvider

- `organization` (string, required)
- `url` (string, required)

### ErrorDetailsItems

- `message` (string, required)
- `code` (string, optional) — Stable Runtype validation code (e.g. MISSING_REQUIRED_FIELD, INVALID_ENUM).
- `path` (string, optional) — Dotted JSON path to the offending field.
- `suggestion` (string, optional) — Actionable hint (allowed values, accepted range, …).

## Examples

**Response**

```json
{
  "authentication": {},
  "capabilities": {},
  "defaultInputModes": [
    "string"
  ],
  "defaultOutputModes": [
    "string"
  ],
  "description": "string",
  "name": "string",
  "protocolVersion": "string",
  "skills": [
    {}
  ],
  "url": "string",
  "version": "string",
  "iconUrl": "string",
  "provider": {
    "organization": "string",
    "url": "string"
  }
}
```

**SDK Code**

```python
import requests

url = "https://api.runtype.com/v1/products/productId/surfaces/surfaceId/a2a/.well-known/agent-card.json"

headers = {"Authorization": "Bearer <token>"}

response = requests.get(url, headers=headers)

print(response.json())
```

```javascript
const url = 'https://api.runtype.com/v1/products/productId/surfaces/surfaceId/a2a/.well-known/agent-card.json';
const options = {method: 'GET', headers: {Authorization: 'Bearer <token>'}};

try {
  const response = await fetch(url, options);
  const data = await response.json();
  console.log(data);
} catch (error) {
  console.error(error);
}
```

```go
package main

import (
	"fmt"
	"net/http"
	"io"
)

func main() {

	url := "https://api.runtype.com/v1/products/productId/surfaces/surfaceId/a2a/.well-known/agent-card.json"

	req, _ := http.NewRequest("GET", url, nil)

	req.Header.Add("Authorization", "Bearer <token>")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(res)
	fmt.Println(string(body))

}
```

```ruby
require 'uri'
require 'net/http'

url = URI("https://api.runtype.com/v1/products/productId/surfaces/surfaceId/a2a/.well-known/agent-card.json")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Get.new(url)
request["Authorization"] = 'Bearer <token>'

response = http.request(request)
puts response.read_body
```

```java
import com.mashape.unirest.http.HttpResponse;
import com.mashape.unirest.http.Unirest;

HttpResponse<String> response = Unirest.get("https://api.runtype.com/v1/products/productId/surfaces/surfaceId/a2a/.well-known/agent-card.json")
  .header("Authorization", "Bearer <token>")
  .asString();
```

```php
<?php
require_once('vendor/autoload.php');

$client = new \GuzzleHttp\Client();

$response = $client->request('GET', 'https://api.runtype.com/v1/products/productId/surfaces/surfaceId/a2a/.well-known/agent-card.json', [
  'headers' => [
    'Authorization' => 'Bearer <token>',
  ],
]);

echo $response->getBody();
```

```csharp
using RestSharp;

var client = new RestClient("https://api.runtype.com/v1/products/productId/surfaces/surfaceId/a2a/.well-known/agent-card.json");
var request = new RestRequest(Method.GET);
request.AddHeader("Authorization", "Bearer <token>");
IRestResponse response = client.Execute(request);
```

```swift
import Foundation

let headers = ["Authorization": "Bearer <token>"]

let request = NSMutableURLRequest(url: NSURL(string: "https://api.runtype.com/v1/products/productId/surfaces/surfaceId/a2a/.well-known/agent-card.json")! as URL,
                                        cachePolicy: .useProtocolCachePolicy,
                                    timeoutInterval: 10.0)
request.httpMethod = "GET"
request.allHTTPHeaderFields = headers

let session = URLSession.shared
let dataTask = session.dataTask(with: request as URLRequest, completionHandler: { (data, response, error) -> Void in
  if (error != nil) {
    print(error as Any)
  } else {
    let httpResponse = response as? HTTPURLResponse
    print(httpResponse)
  }
})

dataTask.resume()
```