> ## Documentation Index > Fetch the complete documentation index at: https://docs.fileloom.io/llms.txt > Use this file to discover all available pages before exploring further. # Overview > Learn how to integrate Fileloom PDF generation into your application with examples in 11 programming languages. Fileloom's REST API works with any programming language that can make HTTP requests. This section provides complete, copy-paste examples for popular languages. ## Available Examples Command line Node.js Type-safe requests Dart cURL/Guzzle C# net/http HttpClient Net::HTTP reqwest ## API Basics | Setting | Value | | ------------------ | ---------------------------- | | **Base URL** | `https://api.fileloom.io/v1` | | **Endpoint** | `POST /pdf/generate` | | **Content-Type** | `application/json` | | **Authentication** | `X-API-Key: fl_your_api_key` | ## Request Structure ```json theme={null} { "htmlContent": "...", "templateData": { }, "filename": "document.pdf", "options": { "format": "A4", "margin": { "top": 10, "right": 10, "bottom": 10, "left": 10 } } } ``` Or with a template: ```json theme={null} { "templateId": "tpl_your_template_id", "templateData": { }, "filename": "document.pdf" } ``` ## Response Structure ```json theme={null} { "success": true, "requestId": "req_abc123", "data": { "fileId": "file_xyz789", "url": "https://storage.googleapis.com/.../document.pdf", "signedUrl": "https://storage.googleapis.com/...?token=...", "filename": "document.pdf", "size": 45678, "processingTimeMs": 1234 }, "usage": { "remaining": 9500, "quotaUsed": 500, "quotaLimit": 10000 } } ``` ## Error Handling | Error Code | Description | | ---------- | ------------------------ | | 400 | Invalid request | | 401 | Invalid API key | | 404 | Template not found | | 408 | Request timeout | | 413 | File too large | | 429 | Rate limit or no credits | | 500 | Server error |