Integration in 3 steps
Send your documents
Call our endpoint with your files (PDF, images, scans). All formats accepted.
AI analyzes
CheckFile identifies file type, extracts data, cross-references documents, and checks compliance.
Get the verdict
Structured JSON response with status (compliant/non-compliant), anomaly details, and confidence scores.
API call example
POST /api/v1/validate
Content-Type: multipart/form-data
Authorization: Bearer YOUR_API_KEY
{
"file_type": "financing",
"documents": [
{ "type": "contract", "file": "contract.pdf" },
{ "type": "identity", "file": "id_card.pdf" },
{ "type": "kbis", "file": "kbis.pdf" }
]
}{
"status": "non_compliant",
"confidence": 0.97,
"anomalies": [
{
"type": "amount_mismatch",
"severity": "high",
"detail": "Contract amount (€15,200) ≠ Quote amount (€12,860)",
"documents": ["contract.pdf", "quote.pdf"]
}
],
"processing_time_ms": 4200
}Authentication
Authorization: Bearer sk_live_...100 req/min (Starter), 1,000/min (Business), unlimited (Enterprise)Error codes
| Code | Description |
|---|---|
400 | Bad request — missing parameters or incorrect format |
401 | Missing or invalid API key |
403 | Access denied — insufficient plan for this resource |
422 | Unprocessable document — unsupported format or corrupted file |
429 | Rate limit exceeded — retry after the indicated delay |
500 | Server error — contact support if persistent |
Webhook example
Receive a notification after each analysis.
POST https://your-domain.com/webhook
Content-Type: application/json
X-CheckFile-Signature: sha256=...
{
"event": "analysis.completed",
"file_id": "file_abc123",
"status": "non_compliant",
"anomalies_count": 2,
"processing_time_ms": 4200,
"created_at": "2025-01-15T10:30:00Z"
}Batch upload
Process multiple files in a single call.
POST /api/v1/batch
Content-Type: application/json
Authorization: Bearer sk_live_...
{
"files": [
{ "file_type": "financing", "documents": [...] },
{ "file_type": "insurance", "documents": [...] },
{ "file_type": "real_estate", "documents": [...] }
],
"webhook_url": "https://your-domain.com/webhook"
}API features
Multi-format
PDF, JPEG, PNG, TIFF, scans, photos. All document formats accepted.
Cross-analysis
Automatic consistency check across all documents in a file.
Webhooks
Real-time notifications on analysis completion. Event-driven integration.
Enrichment
Verification via official APIs: company registries, government databases.
Configurable rules
Define your own business rules per file type and per partner.
High availability
99.9% uptime, European hosting, AES-256 encryption in transit and at rest.
Connect CheckFile to your tools
Beyond the REST API, CheckFile connects natively to your everyday tools.
CRM
- Salesforce
- HubSpot
- Pipedrive
- Zoho
ERP & Accounting
- SAP
- Cegid
- Sage
- Pennylane
Automation
- Zapier
- Make
- Webhooks
Storage
- Google Drive
- SharePoint
- Dropbox
- Box
Coming soon
Interactive documentation (Swagger)
Deployment in progress
Sandbox environment
Available on request
Python & Node.js SDKs
In development