Add content to an existing knowledge base
curl --request POST \
--url https://api.trugen.ai/v1/ext/kb/{id}/doc \
--header 'Content-Type: multipart/form-data' \
--header 'x-api-key: <api-key>' \
--form 'text=Sample knowledge base text or URL like https://docs.trugen.ai/' \
--form input='@example-file'import requests
url = "https://api.trugen.ai/v1/ext/kb/{id}/doc"
files = { "input": ("example-file", open("example-file", "rb")) }
payload = { "text": "Sample knowledge base text or URL like https://docs.trugen.ai/" }
headers = {"x-api-key": "<api-key>"}
response = requests.post(url, data=payload, files=files, headers=headers)
print(response.text)const form = new FormData();
form.append('text', 'Sample knowledge base text or URL like https://docs.trugen.ai/');
form.append('input', '<string>');
const options = {method: 'POST', headers: {'x-api-key': '<api-key>'}};
options.body = form;
fetch('https://api.trugen.ai/v1/ext/kb/{id}/doc', 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.trugen.ai/v1/ext/kb/{id}/doc",
CURLOPT_RETURNTRANSFER => true,
CURLOPT_ENCODING => "",
CURLOPT_MAXREDIRS => 10,
CURLOPT_TIMEOUT => 30,
CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
CURLOPT_CUSTOMREQUEST => "POST",
CURLOPT_POSTFIELDS => "-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"text\"\r\n\r\nSample knowledge base text or URL like https://docs.trugen.ai/\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"input\"; filename=\"example-file\"\r\nContent-Type: application/octet-stream\r\n\r\n<string>\r\n-----011000010111000001101001--",
CURLOPT_HTTPHEADER => [
"Content-Type: multipart/form-data",
"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.trugen.ai/v1/ext/kb/{id}/doc"
payload := strings.NewReader("-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"text\"\r\n\r\nSample knowledge base text or URL like https://docs.trugen.ai/\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"input\"; filename=\"example-file\"\r\nContent-Type: application/octet-stream\r\n\r\n<string>\r\n-----011000010111000001101001--")
req, _ := http.NewRequest("POST", url, payload)
req.Header.Add("x-api-key", "<api-key>")
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.trugen.ai/v1/ext/kb/{id}/doc")
.header("x-api-key", "<api-key>")
.body("-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"text\"\r\n\r\nSample knowledge base text or URL like https://docs.trugen.ai/\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"input\"; filename=\"example-file\"\r\nContent-Type: application/octet-stream\r\n\r\n<string>\r\n-----011000010111000001101001--")
.asString();require 'uri'
require 'net/http'
url = URI("https://api.trugen.ai/v1/ext/kb/{id}/doc")
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.body = "-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"text\"\r\n\r\nSample knowledge base text or URL like https://docs.trugen.ai/\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"input\"; filename=\"example-file\"\r\nContent-Type: application/octet-stream\r\n\r\n<string>\r\n-----011000010111000001101001--"
response = http.request(request)
puts response.read_body{
"added": 1,
"message": "Content added successfully to existing Knowledge Base"
}{
"error": "Invalid request body"
}{
"error": "Unauthorized: not a valid authorization api key"
}{
"message": "Knowledge Base not found"
}{
"error": "Failed to retrieve knowledge base"
}Knowledge Base
Add Documents to Knowledge Base
Uploads additional content or a document to an existing Knowledge Base. Requires x-api-key authentication.
POST
/
ext
/
kb
/
{id}
/
doc
Add content to an existing knowledge base
curl --request POST \
--url https://api.trugen.ai/v1/ext/kb/{id}/doc \
--header 'Content-Type: multipart/form-data' \
--header 'x-api-key: <api-key>' \
--form 'text=Sample knowledge base text or URL like https://docs.trugen.ai/' \
--form input='@example-file'import requests
url = "https://api.trugen.ai/v1/ext/kb/{id}/doc"
files = { "input": ("example-file", open("example-file", "rb")) }
payload = { "text": "Sample knowledge base text or URL like https://docs.trugen.ai/" }
headers = {"x-api-key": "<api-key>"}
response = requests.post(url, data=payload, files=files, headers=headers)
print(response.text)const form = new FormData();
form.append('text', 'Sample knowledge base text or URL like https://docs.trugen.ai/');
form.append('input', '<string>');
const options = {method: 'POST', headers: {'x-api-key': '<api-key>'}};
options.body = form;
fetch('https://api.trugen.ai/v1/ext/kb/{id}/doc', 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.trugen.ai/v1/ext/kb/{id}/doc",
CURLOPT_RETURNTRANSFER => true,
CURLOPT_ENCODING => "",
CURLOPT_MAXREDIRS => 10,
CURLOPT_TIMEOUT => 30,
CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
CURLOPT_CUSTOMREQUEST => "POST",
CURLOPT_POSTFIELDS => "-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"text\"\r\n\r\nSample knowledge base text or URL like https://docs.trugen.ai/\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"input\"; filename=\"example-file\"\r\nContent-Type: application/octet-stream\r\n\r\n<string>\r\n-----011000010111000001101001--",
CURLOPT_HTTPHEADER => [
"Content-Type: multipart/form-data",
"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.trugen.ai/v1/ext/kb/{id}/doc"
payload := strings.NewReader("-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"text\"\r\n\r\nSample knowledge base text or URL like https://docs.trugen.ai/\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"input\"; filename=\"example-file\"\r\nContent-Type: application/octet-stream\r\n\r\n<string>\r\n-----011000010111000001101001--")
req, _ := http.NewRequest("POST", url, payload)
req.Header.Add("x-api-key", "<api-key>")
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.trugen.ai/v1/ext/kb/{id}/doc")
.header("x-api-key", "<api-key>")
.body("-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"text\"\r\n\r\nSample knowledge base text or URL like https://docs.trugen.ai/\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"input\"; filename=\"example-file\"\r\nContent-Type: application/octet-stream\r\n\r\n<string>\r\n-----011000010111000001101001--")
.asString();require 'uri'
require 'net/http'
url = URI("https://api.trugen.ai/v1/ext/kb/{id}/doc")
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.body = "-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"text\"\r\n\r\nSample knowledge base text or URL like https://docs.trugen.ai/\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"input\"; filename=\"example-file\"\r\nContent-Type: application/octet-stream\r\n\r\n<string>\r\n-----011000010111000001101001--"
response = http.request(request)
puts response.read_body{
"added": 1,
"message": "Content added successfully to existing Knowledge Base"
}{
"error": "Invalid request body"
}{
"error": "Unauthorized: not a valid authorization api key"
}{
"message": "Knowledge Base not found"
}{
"error": "Failed to retrieve knowledge base"
}Add a document to an existing knowledge base. Supported formats: PDF, DOCX, DOC, TXT, PPTX, PNG, JPG, JPEG, MD, JSON, plain text, and URLs (single page or full site crawl).
To crawl an entire site:
Supported inputs
| Input | Content-Type | Notes |
|---|---|---|
Document file (.pdf, .docx, .doc, .txt, .pptx, .png, .jpg, .jpeg, .md, .json) | multipart/form-data | Best for policies, manuals, images, structured content |
| Plain text | multipart/form-data or JSON | For FAQs and scripted content |
| Single URL | JSON | TruGen fetches, parses, and indexes the page |
| Root URL (crawl) | JSON | TruGen crawls the site up to N pages deep |
Upload a file
curl --request POST \
--url https://api.trugen.ai/v1/ext/kb/{id}/doc \
--header 'x-api-key: YOUR_API_KEY' \
--form 'file=@/path/to/product-guide.pdf'
Upload from a URL
curl --request POST \
--url https://api.trugen.ai/v1/ext/kb/{id}/doc \
--header 'x-api-key: YOUR_API_KEY' \
--header 'Content-Type: application/json' \
--data '{
"type": "url",
"url": "https://docs.yourcompany.com/pricing"
}'
{
"type": "url",
"url": "https://docs.yourcompany.com",
"crawl": true,
"max_pages": 100
}
Response
{
"doc_id": "doc_abc123",
"status": "processing",
"message": "Document accepted; indexing in progress"
}
Indexing status
Documents pass through:queued → processing → ready (or failed). Poll the parent KB to see all documents’ status:
GET /ext/kb/{id}
Best practices
- Clean text beats fancy PDFs. A PDF with unusual layouts, footnotes, or tables retrieves poorly. Convert to Markdown when you can.
- Split large documents. A 100-page PDF retrieves worse than 10 well-scoped documents.
- Use titles that describe content. File names show up in retrieval reasoning;
hr-leave-policy-2026.pdfbeatsdocument-final-v2.pdf. - Re-upload changed docs rather than editing. Delete the old one and upload the new one for a clean index.
Common failures
unsupported_format: the file isn’t a PDF, DOCX, or text.file_too_large: max 50 MB per file. Split larger files.crawl_failed: the target URL rejected our crawler (robots.txt, auth-gated, JS-only). Provide static, publicly reachable URLs.extraction_low_confidence: the document was successfully processed but content quality is low. Common with heavily-formatted PDFs.
Next steps
Authorizations
Path Parameters
UUID of the Knowledge Base to which the content will be added
Example:
"d837afdc-f95f-4e4d-abe4-40894db22a02"
Body
multipart/form-data
Text or URL content to be added to the Knowledge Base
Example:
"Sample knowledge base text or URL like https://docs.trugen.ai/"
Optional file upload (e.g., .pdf, .docx)
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