Create Source

curl --request POST \
  --url https://api.eu.linqalpha.com/v1/sources \
  --header 'Content-Type: application/json' \
  --header 'X-API-KEY: <api-key>' \
  --data '
{
  "source_batch_id": "123e4567-e89b-12d3-a456-426614174000",
  "name": "Q4_Revenue_Report.pdf",
  "file_key": "uploaded_sources/2024/q4/revenue_report.pdf"
}
'

import requests

url = "https://api.eu.linqalpha.com/v1/sources"

payload = {
    "source_batch_id": "123e4567-e89b-12d3-a456-426614174000",
    "name": "Q4_Revenue_Report.pdf",
    "file_key": "uploaded_sources/2024/q4/revenue_report.pdf"
}
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({
    source_batch_id: '123e4567-e89b-12d3-a456-426614174000',
    name: 'Q4_Revenue_Report.pdf',
    file_key: 'uploaded_sources/2024/q4/revenue_report.pdf'
  })
};

fetch('https://api.eu.linqalpha.com/v1/sources', 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.eu.linqalpha.com/v1/sources",
  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([
    'source_batch_id' => '123e4567-e89b-12d3-a456-426614174000',
    'name' => 'Q4_Revenue_Report.pdf',
    'file_key' => 'uploaded_sources/2024/q4/revenue_report.pdf'
  ]),
  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.eu.linqalpha.com/v1/sources"

	payload := strings.NewReader("{\n  \"source_batch_id\": \"123e4567-e89b-12d3-a456-426614174000\",\n  \"name\": \"Q4_Revenue_Report.pdf\",\n  \"file_key\": \"uploaded_sources/2024/q4/revenue_report.pdf\"\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.eu.linqalpha.com/v1/sources")
  .header("X-API-KEY", "<api-key>")
  .header("Content-Type", "application/json")
  .body("{\n  \"source_batch_id\": \"123e4567-e89b-12d3-a456-426614174000\",\n  \"name\": \"Q4_Revenue_Report.pdf\",\n  \"file_key\": \"uploaded_sources/2024/q4/revenue_report.pdf\"\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.eu.linqalpha.com/v1/sources")

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  \"source_batch_id\": \"123e4567-e89b-12d3-a456-426614174000\",\n  \"name\": \"Q4_Revenue_Report.pdf\",\n  \"file_key\": \"uploaded_sources/2024/q4/revenue_report.pdf\"\n}"

response = http.request(request)
puts response.read_body

{
  "source_id": "456e7890-e89b-12d3-a456-426614174001",
  "size": 2048576,
  "status": "processing"
}

Legacy endpoints

Create Source

Legacy in the EU region. This endpoint is kept for backward compatibility and is not recommended for new EU integrations. Use Vault — Confirm Upload (POST /v2/vault/confirm) instead.

Registers a previously-uploaded file as a document source under a source batch and queues it for asynchronous parsing. Once status: "success", the source is searchable in chat/search conversations that reference its source_batch_id.

Important Notes:

Prerequisite: A source batch must be created first using POST /v1/source_batches
The file must already be in S3 before calling this endpoint. Two ways to get it there:
- Recommended: call POST /v1/sources/upload_url to obtain a presigned PUT URL, upload the file directly via that URL, then pass the returned file_key here. No client-side AWS setup required.
- Alternative: if you already have your own S3 staging bucket integrated with us, upload there and pass the resulting file_key.
Processing: Sources are queued for asynchronous processing. Use GET /v1/sources/{source_id} to poll the processing status before using in conversations.
File Requirements:
- Supported formats: PDF, DOCX, XLSX, DOC, TXT, PPTX
- Maximum size: 20MB per file
- Maximum files per batch: 10 files
Usage in Conversations:
- Reference sources via source_batch_id in chat/search API requests
- All sources in a batch are accessible when the batch is referenced
- Sources remain available for reuse within conversations that reference their batch

Workflow (presigned-URL path):

POST /v1/source_batches → source_batch_id
POST /v1/sources/upload_url → upload_url, file_key, content_type
PUT the file body to upload_url with header Content-Type: <content_type>
POST /v1/sources (this endpoint) with file_key from step 2
Poll GET /v1/sources/{source_id} until status: "success"
Reference source_batch_id in chat/search requests

POST

sources

Create Source

curl --request POST \
  --url https://api.eu.linqalpha.com/v1/sources \
  --header 'Content-Type: application/json' \
  --header 'X-API-KEY: <api-key>' \
  --data '
{
  "source_batch_id": "123e4567-e89b-12d3-a456-426614174000",
  "name": "Q4_Revenue_Report.pdf",
  "file_key": "uploaded_sources/2024/q4/revenue_report.pdf"
}
'

import requests

url = "https://api.eu.linqalpha.com/v1/sources"

payload = {
    "source_batch_id": "123e4567-e89b-12d3-a456-426614174000",
    "name": "Q4_Revenue_Report.pdf",
    "file_key": "uploaded_sources/2024/q4/revenue_report.pdf"
}
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({
    source_batch_id: '123e4567-e89b-12d3-a456-426614174000',
    name: 'Q4_Revenue_Report.pdf',
    file_key: 'uploaded_sources/2024/q4/revenue_report.pdf'
  })
};

fetch('https://api.eu.linqalpha.com/v1/sources', 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.eu.linqalpha.com/v1/sources",
  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([
    'source_batch_id' => '123e4567-e89b-12d3-a456-426614174000',
    'name' => 'Q4_Revenue_Report.pdf',
    'file_key' => 'uploaded_sources/2024/q4/revenue_report.pdf'
  ]),
  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.eu.linqalpha.com/v1/sources"

	payload := strings.NewReader("{\n  \"source_batch_id\": \"123e4567-e89b-12d3-a456-426614174000\",\n  \"name\": \"Q4_Revenue_Report.pdf\",\n  \"file_key\": \"uploaded_sources/2024/q4/revenue_report.pdf\"\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.eu.linqalpha.com/v1/sources")
  .header("X-API-KEY", "<api-key>")
  .header("Content-Type", "application/json")
  .body("{\n  \"source_batch_id\": \"123e4567-e89b-12d3-a456-426614174000\",\n  \"name\": \"Q4_Revenue_Report.pdf\",\n  \"file_key\": \"uploaded_sources/2024/q4/revenue_report.pdf\"\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.eu.linqalpha.com/v1/sources")

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  \"source_batch_id\": \"123e4567-e89b-12d3-a456-426614174000\",\n  \"name\": \"Q4_Revenue_Report.pdf\",\n  \"file_key\": \"uploaded_sources/2024/q4/revenue_report.pdf\"\n}"

response = http.request(request)
puts response.read_body

{
  "source_id": "456e7890-e89b-12d3-a456-426614174001",
  "size": 2048576,
  "status": "processing"
}

Authorizations

X-API-KEY

string

header

required

Body

application/json

source_batch_id

string<uuid>

required

ID of the source batch to add this source to. The batch must be created first via POST /v1/source_batches.

Example:

"123e4567-e89b-12d3-a456-426614174000"

name

string

required

Display name for the source, typically the original filename. Must not include a file extension.

Example:

"Q4_Revenue_Report"

file_key

string

required

S3 object key path where the file is stored. The file must be accessible to the API service and meet format/size requirements (PDF, DOCX, XLSX, DOC, TXT, PPTX; max 20MB).

Example:

"uploaded_sources/2024/q4/revenue_report.pdf"

user_id

string

User ID

Example:

"123e4567-e89b-12d3-a456-426614174000"

organization_id

string<uuid>

Organization ID

Example:

"123e4567-e89b-12d3-a456-426614174000"

user_email

string

User email

Example:

"john.doe@example.com"

user_name

string

User name

Example:

"John Doe"

Response

Source created and queued for processing

source_id

string<uuid>

required

Unique identifier for the created source. Use this ID to poll processing status via GET /v1/sources/{source_id}.

Example:

"456e7890-e89b-12d3-a456-426614174001"

size

integer

required

File size in bytes

Required range: x >= 0

Example:

2048576

status

enum<string>

Initial processing status (typically 'processing' when first created)

Available options:

processing,

success,

failed

Example:

"processing"

MCP

Basic

Analytics V2

Evaluations

Briefing

Sync Status

Legacy

Create Source

Authorizations

Body

Response