Begin the OAuth handshake for an External MCP Connection

Runs RFC 9728 discovery, dynamic client registration if needed, and returns an authorize URL to redirect the admin’s browser to.

GET /v1/mcp-connections/{connectionId}/connect/start

Begin the OAuth handshake for an External MCP Connection

cURL

curl --request GET \
  --url https://api.example.com/v1/mcp-connections/{connectionId}/connect/start

import requests

url = "https://api.example.com/v1/mcp-connections/{connectionId}/connect/start"

response = requests.get(url)

print(response.text)

const options = {method: 'GET'};

fetch('https://api.example.com/v1/mcp-connections/{connectionId}/connect/start', 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.example.com/v1/mcp-connections/{connectionId}/connect/start",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "GET",
]);

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

curl_close($curl);

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

package main

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

func main() {

	url := "https://api.example.com/v1/mcp-connections/{connectionId}/connect/start"

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

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

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

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.get("https://api.example.com/v1/mcp-connections/{connectionId}/connect/start")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.example.com/v1/mcp-connections/{connectionId}/connect/start")

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

request = Net::HTTP::Get.new(url)

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

200

{
  "authorizeUrl": "<string>"
}

{
  "error": "<string>"
}

{
  "error": "<string>",
  "message": "<string>"
}

{
  "error": "<string>",
  "message": "<string>",
  "callbackUrl": "<string>",
  "clientMetadataUrl": "<string>",
  "manualRequirements": [
    "<string>"
  ]
}

{
  "error": "<string>",
  "message": "<string>",
  "diagnostic": {
    "referenceId": "<string>",
    "category": "<string>",
    "code": "<string>",
    "retryable": true,
    "operatorAction": "<string>",
    "message": "<string>",
    "httpStatus": 349,
    "outbound": {
      "origin": "<string>",
      "pathHash": "<string>"
    },
    "providerRequestId": "<string>",
    "providerStatus": 0,
    "providerCode": "<string>",
    "payloadBytes": 0,
    "jsonRpcCode": 0,
    "connectUrl": "<string>"
  }
}

Path Parameters

connectionId · string<typeid> · required

Den TypeID with 'emc_' prefix and a 26-character base32 suffix.

Required string length: 30

Pattern: ^emc_.*

Response

200

application/json

Authorize URL, or already connected.

status · enum<string> · required

Available options: connected, needs_auth

authorizeUrl · string | null · required