Create a message

const options = {
  method: 'POST',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    model: 'anthropic/claude-sonnet-4',
    max_tokens: 512,
    stream: false,
    messages: [{role: 'user', content: 'What time is it in America/New_York right now?'}],
    tools: [{type: 'gateway:datetime', parameters: {timezone: 'America/New_York'}}],
    tool_choice: {type: 'auto'}
  })
};

fetch('https://api.phaseo.app/v1/messages', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

import requests

url = "https://api.phaseo.app/v1/messages"

payload = {
    "model": "anthropic/claude-sonnet-4",
    "max_tokens": 512,
    "stream": False,
    "messages": [
        {
            "role": "user",
            "content": "What time is it in America/New_York right now?"
        }
    ],
    "tools": [
        {
            "type": "gateway:datetime",
            "parameters": { "timezone": "America/New_York" }
        }
    ],
    "tool_choice": { "type": "auto" }
}
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

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

print(response.text)

curl --request POST \
  --url https://api.phaseo.app/v1/messages \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "model": "anthropic/claude-sonnet-4",
  "max_tokens": 512,
  "stream": false,
  "messages": [
    {
      "role": "user",
      "content": "What time is it in America/New_York right now?"
    }
  ],
  "tools": [
    {
      "type": "gateway:datetime",
      "parameters": {
        "timezone": "America/New_York"
      }
    }
  ],
  "tool_choice": {
    "type": "auto"
  }
}
'

package main

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

func main() {

	url := "https://api.phaseo.app/v1/messages"

	payload := strings.NewReader("{\n  \"model\": \"anthropic/claude-sonnet-4\",\n  \"max_tokens\": 512,\n  \"stream\": false,\n  \"messages\": [\n    {\n      \"role\": \"user\",\n      \"content\": \"What time is it in America/New_York right now?\"\n    }\n  ],\n  \"tools\": [\n    {\n      \"type\": \"gateway:datetime\",\n      \"parameters\": {\n        \"timezone\": \"America/New_York\"\n      }\n    }\n  ],\n  \"tool_choice\": {\n    \"type\": \"auto\"\n  }\n}")

	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.phaseo.app/v1/messages")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"model\": \"anthropic/claude-sonnet-4\",\n  \"max_tokens\": 512,\n  \"stream\": false,\n  \"messages\": [\n    {\n      \"role\": \"user\",\n      \"content\": \"What time is it in America/New_York right now?\"\n    }\n  ],\n  \"tools\": [\n    {\n      \"type\": \"gateway:datetime\",\n      \"parameters\": {\n        \"timezone\": \"America/New_York\"\n      }\n    }\n  ],\n  \"tool_choice\": {\n    \"type\": \"auto\"\n  }\n}")
  .asString();

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://api.phaseo.app/v1/messages",
  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([
    'model' => 'anthropic/claude-sonnet-4',
    'max_tokens' => 512,
    'stream' => false,
    'messages' => [
        [
                'role' => 'user',
                'content' => 'What time is it in America/New_York right now?'
        ]
    ],
    'tools' => [
        [
                'type' => 'gateway:datetime',
                'parameters' => [
                                'timezone' => 'America/New_York'
                ]
        ]
    ],
    'tool_choice' => [
        'type' => 'auto'
    ]
  ]),
  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;
}

require 'uri'
require 'net/http'

url = URI("https://api.phaseo.app/v1/messages")

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 = "{\n  \"model\": \"anthropic/claude-sonnet-4\",\n  \"max_tokens\": 512,\n  \"stream\": false,\n  \"messages\": [\n    {\n      \"role\": \"user\",\n      \"content\": \"What time is it in America/New_York right now?\"\n    }\n  ],\n  \"tools\": [\n    {\n      \"type\": \"gateway:datetime\",\n      \"parameters\": {\n        \"timezone\": \"America/New_York\"\n      }\n    }\n  ],\n  \"tool_choice\": {\n    \"type\": \"auto\"\n  }\n}"

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

{
  "id": "<string>",
  "type": "<string>",
  "role": "assistant",
  "model": "<string>",
  "content": [
    {
      "type": "text",
      "text": "<string>",
      "cache_control": {
        "type": "<string>",
        "ttl": "<string>",
        "scope": "<string>"
      },
      "source": {
        "type": "<string>",
        "media_type": "<string>",
        "data": "<string>",
        "url": "<string>"
      },
      "id": "<string>",
      "name": "<string>",
      "input": {},
      "tool_use_id": "<string>",
      "content": "<string>"
    }
  ],
  "stop_reason": "<string>",
  "stop_sequence": "<string>",
  "usage": {
    "input_tokens": 123,
    "cache_read_input_tokens": 123,
    "cache_creation_input_tokens": 123,
    "cache_creation": {
      "ephemeral_5m_input_tokens": 123,
      "ephemeral_1h_input_tokens": 123
    },
    "output_tokens": 123,
    "cost": 0.001234567,
    "cost_details": {
      "upstream_inference_cost": null
    }
  },
  "context_management": {
    "applied_edits": [
      {}
    ]
  }
}