Add people to a group

curl --request POST \
  --url https://api.fluid.app/api/member/v2026-10/messaging/conversations/{id}/recipients \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "member_ids": [
    "01a08944-eff4-7a2a-be01-d699fa649966"
  ]
}
'

import requests

url = "https://api.fluid.app/api/member/v2026-10/messaging/conversations/{id}/recipients"

payload = { "member_ids": ["01a08944-eff4-7a2a-be01-d699fa649966"] }
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({member_ids: ['01a08944-eff4-7a2a-be01-d699fa649966']})
};

fetch('https://api.fluid.app/api/member/v2026-10/messaging/conversations/{id}/recipients', 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.fluid.app/api/member/v2026-10/messaging/conversations/{id}/recipients",
  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([
    'member_ids' => [
        '01a08944-eff4-7a2a-be01-d699fa649966'
    ]
  ]),
  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.fluid.app/api/member/v2026-10/messaging/conversations/{id}/recipients"

	payload := strings.NewReader("{\n  \"member_ids\": [\n    \"01a08944-eff4-7a2a-be01-d699fa649966\"\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.fluid.app/api/member/v2026-10/messaging/conversations/{id}/recipients")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"member_ids\": [\n    \"01a08944-eff4-7a2a-be01-d699fa649966\"\n  ]\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.fluid.app/api/member/v2026-10/messaging/conversations/{id}/recipients")

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  \"member_ids\": [\n    \"01a08944-eff4-7a2a-be01-d699fa649966\"\n  ]\n}"

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

{
  "status": 200,
  "data": {
    "id": "0199a1b2-c3d4-7e5f-8a9b-0c1d2e3f4a5b",
    "kind": "group",
    "title": "Launch team",
    "avatar_url": null,
    "recipients": [
      {
        "id": "01a08944-eff4-7a2a-be01-d699fa649966",
        "kind": "member",
        "name": "Nathan Rivera",
        "avatar_url": null
      }
    ],
    "recipients_truncated": false,
    "last_message": {
      "id": "0199a1b2-c3d4-7e5f-8a9b-0c1d2e3f4a60",
      "preview": "See you at the kickoff.",
      "sent_at": "2026-10-01T15:02:00Z",
      "sender_id": "01a08944-eff4-7a2a-be01-d699fa649966"
    },
    "unread": true,
    "archived": false,
    "pinned_count": 0,
    "last_activity_at": "2026-10-01T15:02:00Z",
    "created_at": "2026-09-28T12:00:00Z"
  },
  "meta": {
    "request_uuid": "01a0f4fe-de00-75b3-8d8a-b74b0cde8b07",
    "timestamp": "2026-10-01T15:04:05Z"
  }
}

{
  "status": 123,
  "error": {
    "message": "<string>",
    "details": {}
  },
  "meta": {
    "request_uuid": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
    "timestamp": "2023-11-07T05:31:56Z"
  }
}

{
  "status": 123,
  "error": {
    "message": "<string>",
    "details": {}
  },
  "meta": {
    "request_uuid": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
    "timestamp": "2023-11-07T05:31:56Z"
  }
}

{
  "status": 123,
  "error": {
    "message": "<string>",
    "details": {}
  },
  "meta": {
    "request_uuid": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
    "timestamp": "2023-11-07T05:31:56Z"
  }
}

{
  "status": 123,
  "error": {
    "message": "<string>",
    "details": {}
  },
  "meta": {
    "request_uuid": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
    "timestamp": "2023-11-07T05:31:56Z"
  }
}