Credits
Credit cost per API endpoint for Chartquery.
Each API call consumes credits from your account based on the endpoint cost. The table below lists every endpoint and its cost per successful request.
Account balances
Your account has three balances, used in this order:
Subscription quota — API calls included in the plan. Resets each billing period.
One-time pack — one-time API packs, consumed in purchase order. They do not reset monthly.
Credits — used only after subscription quota and the one-time pack are exhausted. They do not reset monthly.
Monitor all three from the Usage endpoint or the dashboard API usage panel. See the Glossary for full definitions.
Synchronous calls are billed on 200. Asynchronous calls (is_async=true) return 202 (not billed) and are billed when the job completes successfully — recorded as 201 in your request logs. Polling GET /jobs/{job_id} is always free. Failed jobs (500) are never billed. 404 billing varies by endpoint (check each endpoint page). All other 4xx/5xx responses are free. If the client closes the socket before a synchronous response is sent, the call is still billed when the result is a billable status. A rate-limit 401 is a normal JSON response: the server does not close the socket.
| Endpoint | Method | Path | Credits |
|---|---|---|---|
| Barcode | GET | /v1/barcode | 3 |
| Chart | GET | /v1/chart | 5 |
| Chart AI | GET | /v1/chart/ai | 10 |
| Chart Render | GET | /v1/chart/render/{id} | 0 |
| Chart View | GET | /v1/chart/view/{id} | 0 |
| Diagram | GET | /v1/diagram | 5 |
| Diagram AI | GET | /v1/diagram/ai | 10 |
| Diagram Render | GET | /v1/diagram/render/{id} | 0 |
| Diagram View | GET | /v1/diagram/view/{id} | 0 |
| Label Preview | GET | /v1/label | 3 |
| Label Render | GET | /v1/label/render/{id} | 0 |
| Label View | GET | /v1/label/view/{id} | 0 |
| QR Code | GET | /v1/qrcode | 3 |
| Stats | GET | /v1/stats | 0 |
| Usage | GET | /v1/usage | 0 |