curl --request PATCH \
  --url https://{host}/v1/conversations/{id} \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/vnd.api+json' \
  --data '
{
  "data": {
    "type": "conversations",
    "id": "3390",
    "attributes": {
      "archived": true
    }
  }
}
'

const options = {
  method: 'PATCH',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/vnd.api+json'},
  body: JSON.stringify({data: {type: 'conversations', id: '3390', attributes: {archived: true}}})
};

fetch('https://{host}/v1/conversations/{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://{host}/v1/conversations/{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([
    'data' => [
        'type' => 'conversations',
        'id' => '3390',
        'attributes' => [
                'archived' => true
        ]
    ]
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>",
    "Content-Type: application/vnd.api+json"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

import requests

url = "https://{host}/v1/conversations/{id}"

payload = { "data": {
        "type": "conversations",
        "id": "3390",
        "attributes": { "archived": True }
    } }
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/vnd.api+json"
}

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

print(response.text)

{
  "data": {
    "type": "conversations",
    "id": "3312",
    "attributes": {
      "side": "seller",
      "unread": true,
      "archived": false,
      "noReplyNeeded": false,
      "buyer": {
        "name": "Jens Urlbauer",
        "initials": "JU",
        "estimatedCountry": "DE"
      },
      "blocked": false,
      "blockedByYou": false,
      "purpose": "propose_price",
      "lastMessage": {
        "id": "88120",
        "excerpt": "Price proposal",
        "from": "seller",
        "mine": false,
        "createdAt": "2026-09-21T09:30:11+02:00",
        "removed": false,
        "priceProposal": {
          "amount": 1300000,
          "currency": "EUR",
          "from": "seller",
          "status": "pending",
          "open": true,
          "payable": true,
          "generatedBody": true
        }
      },
      "agreedPrice": 1300000,
      "order": null,
      "createdAt": "2026-09-20T10:00:00.000000Z",
      "updatedAt": "2026-09-21T07:30:11.000000Z"
    },
    "relationships": {
      "watch": {
        "links": {
          "related": "https://api.wristler.eu/v1/conversations/3312/watch"
        }
      },
      "seller": {
        "links": {
          "related": "https://api.wristler.eu/v1/conversations/3312/seller"
        }
      },
      "messages": {
        "links": {
          "related": "https://api.wristler.eu/v1/conversations/3312/messages"
        }
      }
    },
    "links": {
      "self": "https://api.wristler.eu/v1/conversations/3312"
    }
  }
}

{
  "errors": [
    {
      "status": "404",
      "code": "watch_reserved",
      "title": "Not Found",
      "detail": "<string>",
      "meta": {},
      "source": {
        "pointer": "/data/attributes/reference",
        "parameter": "<string>"
      }
    }
  ],
  "jsonapi": {
    "version": "1.0"
  }
}

{
  "errors": [
    {
      "status": "404",
      "code": "watch_reserved",
      "title": "Not Found",
      "detail": "<string>",
      "meta": {},
      "source": {
        "pointer": "/data/attributes/reference",
        "parameter": "<string>"
      }
    }
  ],
  "jsonapi": {
    "version": "1.0"
  }
}

{
  "errors": [
    {
      "status": "404",
      "code": "watch_reserved",
      "title": "Not Found",
      "detail": "<string>",
      "meta": {},
      "source": {
        "pointer": "/data/attributes/reference",
        "parameter": "<string>"
      }
    }
  ],
  "jsonapi": {
    "version": "1.0"
  }
}