Create knowledge base
curl --request POST \
--url https://api.lehar.ai/ca/api/v0/knowledge-bases \
--header 'Content-Type: application/json' \
--header 'X-API-KEY: <api-key>' \
--data '
{
"name": "Support FAQ",
"description": "Answers for common customer questions"
}
'import requests
url = "https://api.lehar.ai/ca/api/v0/knowledge-bases"
payload = {
"name": "Support FAQ",
"description": "Answers for common customer questions"
}
headers = {
"X-API-KEY": "<api-key>",
"Content-Type": "application/json"
}
response = requests.post(url, json=payload, headers=headers)
print(response.text)const options = {
method: 'POST',
headers: {'X-API-KEY': '<api-key>', 'Content-Type': 'application/json'},
body: JSON.stringify({name: 'Support FAQ', description: 'Answers for common customer questions'})
};
fetch('https://api.lehar.ai/ca/api/v0/knowledge-bases', 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.lehar.ai/ca/api/v0/knowledge-bases",
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([
'name' => 'Support FAQ',
'description' => 'Answers for common customer questions'
]),
CURLOPT_HTTPHEADER => [
"Content-Type: application/json",
"X-API-KEY: <api-key>"
],
]);
$response = curl_exec($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.lehar.ai/ca/api/v0/knowledge-bases"
payload := strings.NewReader("{\n \"name\": \"Support FAQ\",\n \"description\": \"Answers for common customer questions\"\n}")
req, _ := http.NewRequest("POST", url, payload)
req.Header.Add("X-API-KEY", "<api-key>")
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.lehar.ai/ca/api/v0/knowledge-bases")
.header("X-API-KEY", "<api-key>")
.header("Content-Type", "application/json")
.body("{\n \"name\": \"Support FAQ\",\n \"description\": \"Answers for common customer questions\"\n}")
.asString();require 'uri'
require 'net/http'
url = URI("https://api.lehar.ai/ca/api/v0/knowledge-bases")
http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true
request = Net::HTTP::Post.new(url)
request["X-API-KEY"] = '<api-key>'
request["Content-Type"] = 'application/json'
request.body = "{\n \"name\": \"Support FAQ\",\n \"description\": \"Answers for common customer questions\"\n}"
response = http.request(request)
puts response.read_body{
"id": "kb_01jq8x9m2h4z7c0r5v3b8t6n1e",
"name": "Support FAQ",
"description": "Answers for common customer questions",
"created_by_user_id": "usr_01jq8x9m2h4z7c0r5v3b8t6n1e",
"document_count": 0,
"created_at": "2026-09-02T10:15:00Z",
"updated_at": "2026-09-02T10:15:00Z"
}{
"error": {
"code": "invalid_request",
"message": "name is required"
}
}{
"error": {
"code": "unauthorized",
"message": "Authentication required"
}
}{
"error": {
"code": "forbidden",
"message": "Scope 'knowledge_base:write' is required"
}
}{
"error": {
"code": "conflict",
"message": "A knowledge base named 'Support FAQ' already exists"
}
}{
"error": {
"code": "internal_error",
"message": "An unexpected error occurred"
}
}Knowledge Base
Create knowledge base
Create a named knowledge base collection (the KB entity/collection API; the plural /knowledge-bases path). Admins only — knowledge_base:write is not granted to the normal_user role. The collection holds no documents until you ingest into it. Scope knowledge_base:write.
POST
/
knowledge-bases
Create knowledge base
curl --request POST \
--url https://api.lehar.ai/ca/api/v0/knowledge-bases \
--header 'Content-Type: application/json' \
--header 'X-API-KEY: <api-key>' \
--data '
{
"name": "Support FAQ",
"description": "Answers for common customer questions"
}
'import requests
url = "https://api.lehar.ai/ca/api/v0/knowledge-bases"
payload = {
"name": "Support FAQ",
"description": "Answers for common customer questions"
}
headers = {
"X-API-KEY": "<api-key>",
"Content-Type": "application/json"
}
response = requests.post(url, json=payload, headers=headers)
print(response.text)const options = {
method: 'POST',
headers: {'X-API-KEY': '<api-key>', 'Content-Type': 'application/json'},
body: JSON.stringify({name: 'Support FAQ', description: 'Answers for common customer questions'})
};
fetch('https://api.lehar.ai/ca/api/v0/knowledge-bases', 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.lehar.ai/ca/api/v0/knowledge-bases",
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([
'name' => 'Support FAQ',
'description' => 'Answers for common customer questions'
]),
CURLOPT_HTTPHEADER => [
"Content-Type: application/json",
"X-API-KEY: <api-key>"
],
]);
$response = curl_exec($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.lehar.ai/ca/api/v0/knowledge-bases"
payload := strings.NewReader("{\n \"name\": \"Support FAQ\",\n \"description\": \"Answers for common customer questions\"\n}")
req, _ := http.NewRequest("POST", url, payload)
req.Header.Add("X-API-KEY", "<api-key>")
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.lehar.ai/ca/api/v0/knowledge-bases")
.header("X-API-KEY", "<api-key>")
.header("Content-Type", "application/json")
.body("{\n \"name\": \"Support FAQ\",\n \"description\": \"Answers for common customer questions\"\n}")
.asString();require 'uri'
require 'net/http'
url = URI("https://api.lehar.ai/ca/api/v0/knowledge-bases")
http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true
request = Net::HTTP::Post.new(url)
request["X-API-KEY"] = '<api-key>'
request["Content-Type"] = 'application/json'
request.body = "{\n \"name\": \"Support FAQ\",\n \"description\": \"Answers for common customer questions\"\n}"
response = http.request(request)
puts response.read_body{
"id": "kb_01jq8x9m2h4z7c0r5v3b8t6n1e",
"name": "Support FAQ",
"description": "Answers for common customer questions",
"created_by_user_id": "usr_01jq8x9m2h4z7c0r5v3b8t6n1e",
"document_count": 0,
"created_at": "2026-09-02T10:15:00Z",
"updated_at": "2026-09-02T10:15:00Z"
}{
"error": {
"code": "invalid_request",
"message": "name is required"
}
}{
"error": {
"code": "unauthorized",
"message": "Authentication required"
}
}{
"error": {
"code": "forbidden",
"message": "Scope 'knowledge_base:write' is required"
}
}{
"error": {
"code": "conflict",
"message": "A knowledge base named 'Support FAQ' already exists"
}
}{
"error": {
"code": "internal_error",
"message": "An unexpected error occurred"
}
}Authorizations
ApiKeyAuthBearerAuth
Body
application/json
Response
Knowledge base created. document_count is 0 for a brand-new collection.

