Chunks
Create Child Chunk
Create a child chunk under a parent chunk. Intended for documents that use the parent-child (hierarchical_model) chunking mode.
POST
/
datasets
/
{dataset_id}
/
documents
/
{document_id}
/
segments
/
{segment_id}
/
child_chunks
Create Child Chunk
curl --request POST \
--url https://{api_base_url}/datasets/{dataset_id}/documents/{document_id}/segments/{segment_id}/child_chunks \
--header 'Authorization: Bearer <token>' \
--header 'Content-Type: application/json' \
--data '
{
"content": "<string>"
}
'import requests
url = "https://{api_base_url}/datasets/{dataset_id}/documents/{document_id}/segments/{segment_id}/child_chunks"
payload = { "content": "<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({content: '<string>'})
};
fetch('https://{api_base_url}/datasets/{dataset_id}/documents/{document_id}/segments/{segment_id}/child_chunks', 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}/child_chunks",
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([
'content' => '<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}/child_chunks"
payload := strings.NewReader("{\n \"content\": \"<string>\"\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}/child_chunks")
.header("Authorization", "Bearer <token>")
.header("Content-Type", "application/json")
.body("{\n \"content\": \"<string>\"\n}")
.asString();require 'uri'
require 'net/http'
url = URI("https://{api_base_url}/datasets/{dataset_id}/documents/{document_id}/segments/{segment_id}/child_chunks")
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 \"content\": \"<string>\"\n}"
response = http.request(request)
puts response.read_body{
"data": {
"id": "d7e8f9a0-1b2c-3d4e-5f6a-7b8c9d0e1f2a",
"segment_id": "f3d1c7be-9f3a-40d8-8eb8-3a1ef9c3f2c1",
"content": "Dify is an open-source platform.",
"position": 1,
"word_count": 6,
"type": "customized",
"created_at": 1741267200,
"updated_at": 1741267200
}
}Authorizations
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
Knowledge base ID.
Document ID.
Chunk ID.
Body
application/json
Child chunk text content.
Response
Child chunk created successfully.
Show child attributes
Show child attributes
Last modified on July 9, 2026
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⌘I
Create Child Chunk
curl --request POST \
--url https://{api_base_url}/datasets/{dataset_id}/documents/{document_id}/segments/{segment_id}/child_chunks \
--header 'Authorization: Bearer <token>' \
--header 'Content-Type: application/json' \
--data '
{
"content": "<string>"
}
'import requests
url = "https://{api_base_url}/datasets/{dataset_id}/documents/{document_id}/segments/{segment_id}/child_chunks"
payload = { "content": "<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({content: '<string>'})
};
fetch('https://{api_base_url}/datasets/{dataset_id}/documents/{document_id}/segments/{segment_id}/child_chunks', 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}/child_chunks",
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([
'content' => '<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}/child_chunks"
payload := strings.NewReader("{\n \"content\": \"<string>\"\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}/child_chunks")
.header("Authorization", "Bearer <token>")
.header("Content-Type", "application/json")
.body("{\n \"content\": \"<string>\"\n}")
.asString();require 'uri'
require 'net/http'
url = URI("https://{api_base_url}/datasets/{dataset_id}/documents/{document_id}/segments/{segment_id}/child_chunks")
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 \"content\": \"<string>\"\n}"
response = http.request(request)
puts response.read_body{
"data": {
"id": "d7e8f9a0-1b2c-3d4e-5f6a-7b8c9d0e1f2a",
"segment_id": "f3d1c7be-9f3a-40d8-8eb8-3a1ef9c3f2c1",
"content": "Dify is an open-source platform.",
"position": 1,
"word_count": 6,
"type": "customized",
"created_at": 1741267200,
"updated_at": 1741267200
}
}