Create Image Post

Try in Explorer

Creating a post with an image works in the same way as creating a text post, with the addition of the assets argument. assets is an ordered list where each entry specifies exactly one of image, video, document, or link — for an image post, pass an image entry with the URL you want to attach.

mutation CreatePost {
  createPost(
    input: {
      text: "Hello there, this is another one!"
      channelId: "some_channel_id"
      schedulingType: automatic
      mode: addToQueue
      assets: [
        {
          image: {
            url: "https://images.unsplash.com/photo-1742850541164-8eb59ecb3282?q=80&w=3388&auto=format&fit=crop&ixlib=rb-4.0.3&ixid=M3wxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8fA%3D%3D"
          }
        }
      ]
    }
  ) {
    ... on PostActionSuccess {
      post {
        id
        text
        assets {
          id
          mimeType
        }
      }
    }
    ... on MutationError {
      message
    }
  }
}

curl -X POST 'https://api.buffer.com' \
  -H 'Content-Type: application/json' \
  -H 'Authorization: Bearer YOUR_API_KEY' \
  -d '{"query": "mutation CreatePost {\n  createPost(\n    input: {\n      text: \"Hello there, this is another one!\"\n      channelId: \"some_channel_id\"\n      schedulingType: automatic\n      mode: addToQueue\n      assets: [\n        {\n          image: {\n            url: \"https://images.unsplash.com/photo-1742850541164-8eb59ecb3282?q=80&w=3388&auto=format&fit=crop&ixlib=rb-4.0.3&ixid=M3wxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8fA%3D%3D\"\n          }\n        }\n      ]\n    }\n  ) {\n    ... on PostActionSuccess {\n      post {\n        id\n        text\n        assets {\n          id\n          mimeType\n        }\n      }\n    }\n    ... on MutationError {\n      message\n    }\n  }\n}"}'

const response = await fetch('https://api.buffer.com', {
  method: 'POST',
  headers: {
    'Content-Type': 'application/json',
    'Authorization': 'Bearer YOUR_API_KEY',
  },
  body: JSON.stringify({
    query: `
    mutation CreatePost {
      createPost(
        input: {
          text: "Hello there, this is another one!"
          channelId: "some_channel_id"
          schedulingType: automatic
          mode: addToQueue
          assets: [
            {
              image: {
                url: "https://images.unsplash.com/photo-1742850541164-8eb59ecb3282?q=80&w=3388&auto=format&fit=crop&ixlib=rb-4.0.3&ixid=M3wxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8fA%3D%3D"
              }
            }
          ]
        }
      ) {
        ... on PostActionSuccess {
          post {
            id
            text
            assets {
              id
              mimeType
            }
          }
        }
        ... on MutationError {
          message
        }
      }
    }
    `,
  }),
});

const data = await response.json();
console.log(data);

<?php

$query = '
mutation CreatePost {
  createPost(
    input: {
      text: "Hello there, this is another one!"
      channelId: "some_channel_id"
      schedulingType: automatic
      mode: addToQueue
      assets: [
        {
          image: {
            url: "https://images.unsplash.com/photo-1742850541164-8eb59ecb3282?q=80&w=3388&auto=format&fit=crop&ixlib=rb-4.0.3&ixid=M3wxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8fA%3D%3D"
          }
        }
      ]
    }
  ) {
    ... on PostActionSuccess {
      post {
        id
        text
        assets {
          id
          mimeType
        }
      }
    }
    ... on MutationError {
      message
    }
  }
}
';

$payload = [
    'query' => $query,
];

$ch = curl_init('https://api.buffer.com');
curl_setopt_array($ch, [
    CURLOPT_POST => true,
    CURLOPT_HTTPHEADER => [
        'Content-Type: application/json',
        'Authorization: Bearer YOUR_API_KEY',
    ],
    CURLOPT_POSTFIELDS => json_encode($payload),
    CURLOPT_RETURNTRANSFER => true,
]);

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

$data = json_decode($response, true);
print_r($data);