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POST
/
datasets
/
{dataset_id}
/
documents
/
{document_id}
/
segments
/
{segment_id}
Update Chunk
curl --request POST \
  --url https://{api_base_url}/datasets/{dataset_id}/documents/{document_id}/segments/{segment_id} \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "segment": {
    "content": "<string>",
    "answer": "<string>",
    "keywords": [
      "<string>"
    ],
    "enabled": true,
    "regenerate_child_chunks": false,
    "attachment_ids": [
      "<string>"
    ],
    "summary": "<string>"
  }
}
'
import requests

url = "https://{api_base_url}/datasets/{dataset_id}/documents/{document_id}/segments/{segment_id}"

payload = { "segment": {
        "content": "<string>",
        "answer": "<string>",
        "keywords": ["<string>"],
        "enabled": True,
        "regenerate_child_chunks": False,
        "attachment_ids": ["<string>"],
        "summary": "<string>"
    } }
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({
    segment: {
      content: '<string>',
      answer: '<string>',
      keywords: ['<string>'],
      enabled: true,
      regenerate_child_chunks: false,
      attachment_ids: ['<string>'],
      summary: '<string>'
    }
  })
};

fetch('https://{api_base_url}/datasets/{dataset_id}/documents/{document_id}/segments/{segment_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://{api_base_url}/datasets/{dataset_id}/documents/{document_id}/segments/{segment_id}",
  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([
    'segment' => [
        'content' => '<string>',
        'answer' => '<string>',
        'keywords' => [
                '<string>'
        ],
        'enabled' => true,
        'regenerate_child_chunks' => false,
        'attachment_ids' => [
                '<string>'
        ],
        'summary' => '<string>'
    ]
  ]),
  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_base_url}/datasets/{dataset_id}/documents/{document_id}/segments/{segment_id}"

	payload := strings.NewReader("{\n  \"segment\": {\n    \"content\": \"<string>\",\n    \"answer\": \"<string>\",\n    \"keywords\": [\n      \"<string>\"\n    ],\n    \"enabled\": true,\n    \"regenerate_child_chunks\": false,\n    \"attachment_ids\": [\n      \"<string>\"\n    ],\n    \"summary\": \"<string>\"\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_base_url}/datasets/{dataset_id}/documents/{document_id}/segments/{segment_id}")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"segment\": {\n    \"content\": \"<string>\",\n    \"answer\": \"<string>\",\n    \"keywords\": [\n      \"<string>\"\n    ],\n    \"enabled\": true,\n    \"regenerate_child_chunks\": false,\n    \"attachment_ids\": [\n      \"<string>\"\n    ],\n    \"summary\": \"<string>\"\n  }\n}")
  .asString();
require 'uri'
require 'net/http'

url = URI("https://{api_base_url}/datasets/{dataset_id}/documents/{document_id}/segments/{segment_id}")

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  \"segment\": {\n    \"content\": \"<string>\",\n    \"answer\": \"<string>\",\n    \"keywords\": [\n      \"<string>\"\n    ],\n    \"enabled\": true,\n    \"regenerate_child_chunks\": false,\n    \"attachment_ids\": [\n      \"<string>\"\n    ],\n    \"summary\": \"<string>\"\n  }\n}"

response = http.request(request)
puts response.read_body
{ "data": { "id": "f3d1c7be-9f3a-40d8-8eb8-3a1ef9c3f2c1", "position": 1, "document_id": "a8e0e5b5-78c6-4130-a5ce-25feb0e0b4ac", "content": "Dify is an open-source LLM app development platform.", "sign_content": "", "answer": "", "word_count": 9, "tokens": 12, "keywords": [ "dify", "platform", "llm" ], "index_node_id": "a1b2c3d4-e5f6-7890-abcd-000000000001", "index_node_hash": "abc123def456", "hit_count": 0, "enabled": true, "disabled_at": null, "disabled_by": null, "status": "completed", "created_by": "ad313dd6-ef04-4dd1-a5b0-c0f0b9e2e7e4", "created_at": 1741267200, "updated_at": 1741267200, "updated_by": "ad313dd6-ef04-4dd1-a5b0-c0f0b9e2e7e4", "indexing_at": 1741267200, "completed_at": 1741267200, "error": null, "stopped_at": null, "child_chunks": [], "attachments": [], "summary": null }, "doc_form": "text_model" }

Authorizations

Authorization
string
header
required

API Key authentication. For all API requests, include your API Key in the Authorization HTTP Header, prefixed with Bearer . Example: Authorization: Bearer {API_KEY}. Strongly recommend storing your API Key on the server-side, not shared or stored on the client-side, to avoid possible API-Key leakage that can lead to serious consequences. Requests with a missing or invalid API key fail with HTTP 401 and error code unauthorized.

Path Parameters

dataset_id
string<uuid>
required

Knowledge base ID.

document_id
string<uuid>
required

Document ID.

segment_id
string<uuid>
required

Chunk ID.

Body

application/json
segment
object
required

Chunk data to update.

Response

Chunk updated successfully.

data
object
doc_form
string

Document chunking mode used by this document.

Last modified on July 9, 2026