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DELETE
/
knowledge
/
{folderId}
/
{attachmentId}
Delete a file from a knowledge folder
curl --request DELETE \
  --url https://api.langdock.com/knowledge/{folderId}/{attachmentId} \
  --header 'Authorization: Bearer <token>'
Using our API via a dedicated deployment? Just replace api.langdock.com with your deployment’s base URL: <deployment-url>/api/public
Deletes a file (attachment) from a knowledge folder. This removes the file and all associated embeddings, making the content no longer searchable.
Requires an API key with the KNOWLEDGE_FOLDER_API scope. The knowledge folder must be shared with the API key. See Share Knowledge Folders with the API for setup instructions.

​
Request Format

​
Path Parameters

ParameterTypeRequiredDescription
folderIdstringYesThe ID of the knowledge folder
attachmentIdstringYesThe ID of the attachment to delete

​
Examples

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Delete with cURL

curl -X DELETE "https://api.langdock.com/knowledge/{folderId}/{attachmentId}" \
  -H "Authorization: Bearer YOUR_API_KEY"

​
Delete with JavaScript

const axios = require("axios");

async function deleteAttachment(folderId, attachmentId) {
  const response = await axios.delete(
    `https://api.langdock.com/knowledge/${folderId}/${attachmentId}`,
    {
      headers: {
        Authorization: "Bearer YOUR_API_KEY",
      },
    }
  );

  return response.data;
}

// Example usage
try {
  const result = await deleteAttachment("folder_abc123", "att_xyz789");
  console.log("Attachment deleted:", result.message);
} catch (error) {
  console.error("Failed to delete:", error.response?.data?.message);
}

​
Bulk Delete Example

async function deleteMultipleAttachments(folderId, attachmentIds) {
  const results = await Promise.allSettled(
    attachmentIds.map((id) => deleteAttachment(folderId, id))
  );

  const succeeded = results.filter((r) => r.status === "fulfilled").length;
  const failed = results.filter((r) => r.status === "rejected").length;

  console.log(`Deleted ${succeeded} files, ${failed} failed`);
  return results;
}

​
Response Format

​
Success Response (200 OK)

{
  status: "success";
  message: "Attachment deleted";
}

​
Example Response

{
  "status": "success",
  "message": "Attachment deleted"
}

​
Error Handling

try {
  const response = await deleteAttachment(folderId, attachmentId);
} catch (error) {
  if (error.response) {
    switch (error.response.status) {
      case 400:
        console.error("Invalid request:", error.response.data.message);
        break;
      case 401:
        console.error("Invalid or missing API key");
        break;
      case 403:
        console.error("API key does not have access to this knowledge folder");
        break;
      case 404:
        console.error("Knowledge folder or attachment not found");
        break;
      case 429:
        console.error("Rate limit exceeded");
        break;
      case 500:
        console.error("Server error");
        break;
    }
  }
}

​
Important Notes

Deletion is permanent. The file and all associated embeddings will be removed and cannot be recovered.
  • The attachment must belong to the specified knowledge folder
  • The knowledge folder must be shared with your API key
  • Deleting an attachment removes it from search results immediately
  • Embeddings associated with the attachment are also deleted
Langdock intentionally blocks browser-origin requests to protect your API key and ensure your applications remain secure. For more information, please see our guide on API Key Best Practices.

Authorizations

​
Authorization
string
header
required

API key as Bearer token. Format "Bearer YOUR_API_KEY"

Path Parameters

​
folderId
string
required

The ID of the knowledge folder

​
attachmentId
string
required

The ID of the attachment to delete

Response

200

Attachment deleted successfully