Proxy Browser Port Request

Proxy an HTTP request to an exposed browser-session port through the gateway. Use the URL returned by GET /sessions/{session_id}/url as the base, then append CDP subpaths such as json/version or json/list. This low-level proxy is primarily intended for browser sessions on port 9222.

GET /api/v1/sandbox/sessions/{session_id}/ports/{port}/{subpath}

Python (SDK)

Python

from mka1 import SDK


with SDK(
    bearer_auth="<YOUR_BEARER_TOKEN_HERE>",
) as sdk:

    res = sdk.sandbox.proxy_browser_port_request(session_id="browser-demo-20260318", port=9222, subpath="json/version", session_token="sandbox_test_browser_20260318")

    # Handle response
    print(res)

200

{
  "Browser": "Chrome/136.0.7103.60",
  "Protocol-Version": "1.3",
  "User-Agent": "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/136.0.0.0 Safari/537.36",
  "webSocketDebuggerUrl": "ws://sandbox.example/api/v1/sandbox/sessions/browser-demo-20260318/ports/9222/devtools/browser/4cb73146-54ea-4bb4-bf57-9f6d66b00e71?session_token=sandbox_test_browser_20260318"
}

Authorizations

Authorization · string · header · required

Gateway auth: send Authorization: Bearer <mka1-api-key>. For multi-user server-side integrations, you can also send X-On-Behalf-Of: <external-user-id>.

Headers

X-On-Behalf-Of · string

Optional external end-user identifier forwarded by the API gateway.

Path Parameters

session_id · string · required

port · integer · required

subpath · string · required

Query Parameters

session_token · string | null

Response

200

application/json

Successful Response