LektApi Documentation

Comprehensive guide to using the LektApi services for document intelligence and data processing.

About LektApi

LektApi is a comprehensive document intelligence and data processing API service developed by Lekt-Tech. This service provides advanced AI-powered capabilities for enterprise document processing and business intelligence requirements.

Core API Services
Document Intelligence
  • Optical Character Recognition (OCR)
  • Intelligent data extraction
  • Document classification
  • Layout analysis and table extraction
  • Multi-language text recognition
Data Processing
  • JSON data transformation
  • Text string normalization
  • Keyword extraction & analysis
  • Data validation & cleansing
  • Content moderation
Supported Languages
English Spanish French
Turkish Russian German
Italian Portuguese Chinese Japanese Kazakh
Supported File Formats
Document Formats: PDF, JPEG, PNG, TIFF, BMP
Authentication

LektApi uses Bearer token authentication. You need to include your API key in the Authorization header of every request.

Getting Your API Key
  1. Navigate to the API Keys section in your dashboard
  2. Click "Create API Key" and provide a descriptive name
  3. Copy the generated API key (keep it secure!)
Making Authenticated Requests
curl -X POST "https://api.lekttech.com/v1/ocr" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: multipart/form-data" \
  -F "file=@document.pdf"
Security: Never expose your API keys in client-side code or public repositories.
Rate Limiting

API requests are rate-limited based on your service tier:

  • Tier 1: 25 RPS (Requests Per Second)
  • Tier 2: 50 RPS
  • Tier 3: 100 RPS
  • Tier 4: 150 RPS
  • Tier 5: 200 RPS
  • Tier 6: 500 RPS
  • Tier 7: 750 RPS
API Keys

Number of API keys available per tier:

  • Tier 1: Up to 3 production + 3 development keys
  • Tier 2-3: Up to 5 production + 5 development keys
  • Tier 4: Up to 6 production + 6 development keys
  • Tier 5: Up to 7 production + 7 development keys
  • Tier 6: Up to 10 production + 10 development keys
  • Tier 7: Up to 15 production + 15 development keys
API Endpoints
POST /v1/ocr

Extract text from images and documents using advanced OCR technology.

Parameters
Parameter Type Required Description
file file Yes Image or PDF file to process
language string No Language code (default: auto-detect)
format string No Output format: text, json (default: text)
Response Example
{
  "success": true,
  "text": "Extracted text content...",
  "confidence": 0.95,
  "language": "en",
  "processing_time": 1.23
}
POST /v1/extract

Extract structured data from documents like invoices, contracts, and forms.

Parameters
Parameter Type Required Description
file file Yes Document to extract data from
document_type string No invoice, contract, form (default: auto)
fields array No Specific fields to extract
POST /v1/transform

Transform and restructure JSON data with advanced mapping capabilities.

Parameters
Parameter Type Required Description
data object Yes JSON data to transform
mapping object Yes Transformation mapping rules
validate boolean No Validate output (default: true)
POST /v1/text2image

Generate images from text descriptions using AI.

Parameters
Parameter Type Required Description
prompt string Yes Text description of image to generate
width integer No Image width in pixels (default: 512)
height integer No Image height in pixels (default: 512)
style string No Art style: realistic, cartoon, abstract
Code Examples
Python
import requests

# OCR Example
url = "https://api.lekttech.com/v1/ocr"
headers = {"Authorization": "Bearer YOUR_API_KEY"}
files = {"file": open("document.pdf", "rb")}

response = requests.post(url, headers=headers, files=files)
result = response.json()

print(f"Extracted text: {result['text']}")
JavaScript (Node.js)
const axios = require('axios');
const FormData = require('form-data');
const fs = require('fs');

const form = new FormData();
form.append('file', fs.createReadStream('document.pdf'));

axios.post('https://api.lekttech.com/v1/ocr', form, {
  headers: {
    'Authorization': 'Bearer YOUR_API_KEY',
    ...form.getHeaders()
  }
})
.then(response => {
  console.log('Extracted text:', response.data.text);
})
.catch(error => {
  console.error('Error:', error.response.data);
});
cURL
# OCR Request
curl -X POST "https://api.lekttech.com/v1/ocr" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -F "file=@document.pdf" \
  -F "language=en" \
  -F "format=json"

# JSON Transform Request
curl -X POST "https://api.lekttech.com/v1/transform" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "data": {"name": "John", "age": 30},
    "mapping": {"fullName": "name", "years": "age"}
  }'
PHP
<?php
$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://api.lekttech.com/v1/ocr",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_POST => true,
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer YOUR_API_KEY"
  ],
  CURLOPT_POSTFIELDS => [
    "file" => new CURLFile("document.pdf")
  ]
]);

$response = curl_exec($curl);
$result = json_decode($response, true);

echo "Extracted text: " . $result['text'];
curl_close($curl);
?>
Service Tiers & Pricing

Choose the tier that best fits your needs. All prices are in EUR and billed monthly.

Rate Limit Definitions
RPS: Requests Per Second (sustained)
RPD: Requests Per Day (daily limit)
Monthly: Total requests per month
Burst: Short-term increased capacity
Tier 1

€2,000

per month

  • 25 RPS
  • 100K RPD
  • 3M monthly requests
  • 50 RPS burst (1 min)
  • 3 prod + 3 dev API keys
Tier 2

€4,000

per month

  • 50 RPS
  • 250K RPD
  • 7M monthly requests
  • 100 RPS burst (2 min)
  • 5 prod + 5 dev API keys
Tier 3

€8,000

per month

  • 100 RPS
  • 500K RPD
  • 15M monthly requests
  • 200 RPS burst (3 min)
  • 5 prod + 5 dev API keys
Tier 4

€10,000

per month

  • 150 RPS
  • 750K RPD
  • 22M monthly requests
  • 300 RPS burst (3 min)
  • 6 prod + 6 dev API keys
Tier 5

€12,000

per month

  • 200 RPS
  • 1M RPD
  • 30M monthly requests
  • 400 RPS burst (4 min)
  • 7 prod + 7 dev API keys
Tier 6

€15,000

per month

  • 500 RPS
  • 2M RPD
  • 60M monthly requests
  • 1K RPS burst (5 min)
  • 10 prod + 10 dev API keys
Tier 7

€20,000

per month

  • 750 RPS
  • 3M RPD
  • 90M monthly requests
  • 1.5K RPS burst (5 min)
  • 15 prod + 15 dev API keys
Need a custom solution? Contact our sales team for enterprise pricing and custom integrations.
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