Authentication
All API requests require authentication via an API key.
API Keys
Include your API key in the X-API-Key header with every request:
curl -X POST https://api.envoice.dev/v1/generate \
-H "X-API-Key: env_live_abc123..."Environments
We provide two types of API keys:
| Type | Prefix | Use Case |
|---|---|---|
| Sandbox | env_sandbox_* |
Development & testing. Free, unlimited usage. Adds watermark to PDFs. |
| Live | env_live_* |
Production use. Counts against your monthly quota. No watermark. |
Managing API Keys
Create and manage your API keys in the Dashboard. You can:
- Create multiple keys (e.g., one per project)
- Name your keys for easy identification
- Toggle keys on/off without deleting them
- See last usage timestamp
Security Note: Keep your API keys secret. Never expose them in client-side code or public repositories.
Rate Limits
| Plan | Requests/min | Monthly Quota |
|---|---|---|
| Sandbox | 60 | Unlimited (watermarked) |
| Starter | 60 | 500 invoices |
| Pro | 120 | 2,000 invoices |