A2A JSON-RPC endpoint for an agent

JSON-RPC 2.0 endpoint implementing the A2A methods SendMessage, SendStreamingMessage, GetTask, CancelTask and GetExtendedAgentCard. SendStreamingMessage responds with text/event-stream; the others with a single JSON-RPC response. GetExtendedAgentCard returns the authenticated, richer AgentCard. Protocol errors are returned as JSON-RPC error objects with HTTP 200. The target namespace is supplied in the message metadata.namespace; the acting user is taken from the bearer token. Request and response bodies follow the A2A 1.0 spec (https://a2a-protocol.org).

POST /a2a/{agentName}

A2A JSON-RPC endpoint for an agent

cURL

curl --request POST \
  --url https://api.datalinks.com/api/v1/a2a/{agentName} \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '{}'

import requests

url = "https://api.datalinks.com/api/v1/a2a/{agentName}"

payload = {}
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

response = requests.post(url, json=payload, headers=headers)

print(response.text)

const options = {
  method: 'POST',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({})
};

fetch('https://api.datalinks.com/api/v1/a2a/{agentName}', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://api.datalinks.com/api/v1/a2a/{agentName}",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => json_encode([
    
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>",
    "Content-Type: application/json"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

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

func main() {

	url := "https://api.datalinks.com/api/v1/a2a/{agentName}"

	payload := strings.NewReader("{}")

	req, _ := http.NewRequest("POST", url, payload)

	req.Header.Add("Authorization", "Bearer <token>")
	req.Header.Add("Content-Type", "application/json")

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

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

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.post("https://api.datalinks.com/api/v1/a2a/{agentName}")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.datalinks.com/api/v1/a2a/{agentName}")

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

request = Net::HTTP::Post.new(url)
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{}"

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

200

{}

{
  "error_code": "UNAUTHORIZED",
  "message": "Missing authentication token",
  "error_message": "",
  "sub_errors": [
    {
      "code": "<string>",
      "message": "<string>"
    }
  ]
}

{
  "error_code": "UNAUTHORIZED",
  "message": "Missing authentication token",
  "error_message": "",
  "sub_errors": [
    {
      "code": "<string>",
      "message": "<string>"
    }
  ]
}

Authorizations

bearerAuthopenId

Authorization · string · header · required

Use a Bearer token for authentication. Submit the token using the Authorization header: Authorization: Bearer <token>.

Path Parameters

agentName · string · required

Body

application/json

The body is of type object.

Response

200

application/json

A JSON-RPC response, or (for SendStreamingMessage) an SSE stream of JSON-RPC responses.

The response is of type object.