SOCIAL MEDIA

Chatous Send Message API

Send a message into a Chatous chat from your own account. Takes your connect.sid session cookie, the chat id (from chatous-poll-events or chatous-get-account-state) and the message text, up to 2000 characters. Returns whether Chatous acknowledged the send. The message is delivered to the other person immediately.

Last updated

chatousmessagingchat
Try it freeGet an API key

How to call it

Send one POST to api.upapi.io/chatous-send-message.post with your key in the X-Api-Key header and the parameters below as a JSON body. Each call spends 1 weighted unit of your monthly quota. The operation times out after 30 seconds. Responses are not cached; every call runs the operation.

endpoint
POST https://api.upapi.io/chatous-send-message.post

Chatous Send Message API reference

Request parameters

chatId
stringrequired — The chat to send into, from chatous-poll-events or -get-account-state.
message
stringrequired — The message text. It is delivered to a real person on Chatous.
proxyUrl
string — Optional proxy URL.
connectSid
stringrequired — The account's connect.sid cookie value.

Response fields

sent
booleanrequired — True only when Chatous acknowledged the message with return_code 0.
chatId
stringrequired
sentAt
stringrequired
elapsedMs
integerrequired

Example request and response

The example response is generated from this operation’s published output schema — it shows the shape and field names, not values from a recorded call.

json — example request body
{
  "chatId": "example",
  "message": "example",
  "connectSid": "example"
}
json — example response shape
{
  "sent": false,
  "chatId": "example",
  "sentAt": "example",
  "elapsedMs": 1
}

Code snippets

cURL
curl
curl -X POST https://api.upapi.io/chatous-send-message.post \
  -H 'Content-Type: application/json' \
  -H 'x-api-key: YOUR_API_KEY' \
  -d '{ "chatId": "example", "message": "example", "connectSid": "example" }'
JavaScript
javascript
const response = await fetch('https://api.upapi.io/chatous-send-message.post', {
  method: 'POST',
  headers: {
    'Content-Type': 'application/json',
    'x-api-key': 'YOUR_API_KEY',
  },
  body: JSON.stringify({
  "chatId": "example",
  "message": "example",
  "connectSid": "example"
}),
});

const data = await response.json();
console.log(data);
Python
python
import requests

response = requests.post(
    'https://api.upapi.io/chatous-send-message.post',
    headers={
        'Content-Type': 'application/json',
        'x-api-key': 'YOUR_API_KEY',
    },
    json={
  "chatId": "example",
  "message": "example",
  "connectSid": "example"
},
)

print(response.json())
Go
go
package main

import (
	"bytes"
	"encoding/json"
	"fmt"
	"io"
	"net/http"
)

func main() {
	payload := []byte(`{ "chatId": "example", "message": "example", "connectSid": "example" }`)

	req, _ := http.NewRequest("POST", "https://api.upapi.io/chatous-send-message.post", bytes.NewBuffer(payload))
	req.Header.Set("Content-Type", "application/json")
	req.Header.Set("x-api-key", "YOUR_API_KEY")

	client := &http.Client{}
	resp, err := client.Do(req)
	if err != nil {
		panic(err)
	}
	defer resp.Body.Close()

	body, _ := io.ReadAll(resp.Body)
	var result map[string]any
	json.Unmarshal(body, &result)
	fmt.Println(result)
}
PHP
php
<?php

$payload = json_encode([
    'chatId' => 'example',
    'message' => 'example',
    'connectSid' => 'example',
]);

$ch = curl_init('https://api.upapi.io/chatous-send-message.post');
curl_setopt_array($ch, [
    CURLOPT_POST           => true,
    CURLOPT_POSTFIELDS     => $payload,
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_HTTPHEADER     => [
        'Content-Type: application/json',
        'x-api-key: YOUR_API_KEY',
    ],
]);

$response = curl_exec($ch);
curl_close($ch);

$data = json_decode($response, true);
var_dump($data);
Ruby
ruby
require 'net/http'
require 'uri'
require 'json'

uri = URI('https://api.upapi.io/chatous-send-message.post')
http = Net::HTTP.new(uri.host, uri.port)
http.use_ssl = uri.scheme == 'https'

request = Net::HTTP::Post.new(uri.path)
request['Content-Type'] = 'application/json'
request['x-api-key'] = 'YOUR_API_KEY'
request.body = { "chatId": "example", "message": "example", "connectSid": "example" }.to_json

response = http.request(request)
puts JSON.parse(response.body)
Java
java
import okhttp3.*;
import com.fasterxml.jackson.databind.ObjectMapper;
import java.util.Map;

OkHttpClient client = new OkHttpClient();
ObjectMapper mapper = new ObjectMapper();

String json = "{ \"chatId\": \"example\", \"message\": \"example\", \"connectSid\": \"example\" }";

RequestBody body = RequestBody.create(json, MediaType.get("application/json"));
Request request = new Request.Builder()
    .url("https://api.upapi.io/chatous-send-message.post")
    .post(body)
    .addHeader("Content-Type", "application/json")
    .addHeader("x-api-key", "YOUR_API_KEY")
    .build();

try (Response response = client.newCall(request).execute()) {
    Map<?, ?> result = mapper.readValue(response.body().string(), Map.class);
    System.out.println(result);
}
C#
csharp
using System.Net.Http;
using System.Net.Http.Json;
using System.Text.Json;

using var client = new HttpClient();
client.DefaultRequestHeaders.Add("x-api-key", "YOUR_API_KEY");

var payload = JsonSerializer.Deserialize<object>("{ \"chatId\": \"example\", \"message\": \"example\", \"connectSid\": \"example\" }");
var response = await client.PostAsJsonAsync("https://api.upapi.io/chatous-send-message.post", payload);

var result = await response.Content.ReadFromJsonAsync<JsonElement>();
Console.WriteLine(result);

Frequently asked questions

How much does the Chatous Send Message API cost per call?

Each call spends 1 weighted unit of your plan's monthly quota. Full pricing is at https://upapi.io/pricing.

How do I authenticate to the Chatous Send Message API?

Send your key in the X-Api-Key header. A free guest key is available without creating an account.

Are Chatous Send Message API responses cached?

No — every call runs the operation live; responses are not cached.

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