All /api/v1/* endpoints require an API key passed in the X-API-Key request header.
curl -H "X-API-Key: YOUR_API_KEY" \
https://api.northaxiumdata.ca/api/v1/contracts?limit=5
Free demo key
Try the API immediately with the public demo key — no sign-up required:
The demo key is rate-limited to 500 requests per month and is shared across all users. For production use, sign up for a paid plan.
API tiers
| Tier | Price | Requests/month | MCP Access |
|---|
| Free | $0 | 500 | ❌ |
| Developer | $29 CAD/mo | 10,000 | ✅ stdio |
| Pro | $99 CAD/mo | 100,000 | ✅ Hosted SSE |
| Enterprise | Custom | Unlimited | ✅ Priority |
Error responses
| Status | Code | Meaning |
|---|
401 | UNAUTHORIZED | Missing or invalid API key |
429 | RATE_LIMITED | Monthly request limit exceeded |
{
"error": {
"code": "UNAUTHORIZED",
"message": "Missing API key. Pass your key in the X-API-Key header."
}
}
Unprotected endpoints
The following endpoints do not require an API key:
GET /health — operational health check
Sign up
Visit northaxiumdata.ca to subscribe and receive your API key. 
