curl --request PATCH \
  --url https://api.{domain}/v1/sessions/{session_id} \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "title": "Nightly report",
  "metadata": {
    "run": "42"
  }
}
'

import requests

url = "https://api.{domain}/v1/sessions/{session_id}"

payload = {
    "title": "Nightly report",
    "metadata": { "run": "42" }
}
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'PATCH',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({title: 'Nightly report', metadata: {run: '42'}})
};

fetch('https://api.{domain}/v1/sessions/{session_id}', 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.{domain}/v1/sessions/{session_id}",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "PATCH",
  CURLOPT_POSTFIELDS => json_encode([
    'title' => 'Nightly report',
    'metadata' => [
        'run' => '42'
    ]
  ]),
  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.{domain}/v1/sessions/{session_id}"

	payload := strings.NewReader("{\n  \"title\": \"Nightly report\",\n  \"metadata\": {\n    \"run\": \"42\"\n  }\n}")

	req, _ := http.NewRequest("PATCH", 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.patch("https://api.{domain}/v1/sessions/{session_id}")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"title\": \"Nightly report\",\n  \"metadata\": {\n    \"run\": \"42\"\n  }\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.{domain}/v1/sessions/{session_id}")

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

request = Net::HTTP::Patch.new(url)
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"title\": \"Nightly report\",\n  \"metadata\": {\n    \"run\": \"42\"\n  }\n}"

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

{
  "object": "session",
  "id": "<string>",
  "status": "idle",
  "created_at": 123,
  "updated_at": 123,
  "agent": {
    "id": "<string>",
    "model": "<string>",
    "model_credential_id": "<string>",
    "approval_mode": "<string>",
    "instructions": "<string>",
    "permission_rules": [
      {}
    ],
    "tools": [
      {}
    ]
  },
  "environment": {
    "type": "sandbox",
    "state": "unknown",
    "workspace_directory": "<string>",
    "repo": {
      "full_name": "<string>",
      "branch": "<string>",
      "clone_error": "<string>"
    }
  },
  "preview": {
    "url": "<string>",
    "port": 123,
    "published_url": "<string>"
  },
  "title": "<string>",
  "source": "api",
  "created_by_token": "<string>",
  "parent_session_id": "<string>",
  "required_actions": [
    {
      "type": "function_call",
      "turn_id": "<string>",
      "call_id": "<string>",
      "name": "<string>",
      "arguments": "<unknown>",
      "created_at": 123,
      "expires_at": 123
    }
  ]
}

{
  "error": {
    "code": "invalid_request",
    "message": "<string>",
    "request_id": "<string>"
  }
}

{
  "error": {
    "code": "invalid_request",
    "message": "<string>",
    "request_id": "<string>"
  }
}

{
  "error": {
    "code": "invalid_request",
    "message": "<string>",
    "request_id": "<string>"
  }
}

{
  "error": {
    "code": "invalid_request",
    "message": "<string>",
    "request_id": "<string>"
  }
}

{
  "error": {
    "code": "invalid_request",
    "message": "<string>",
    "request_id": "<string>"
  }
}

{
  "error": {
    "code": "invalid_request",
    "message": "<string>",
    "request_id": "<string>"
  }
}

{
  "error": {
    "code": "invalid_request",
    "message": "<string>",
    "request_id": "<string>"
  }
}