Submit now and fetch the answer later
2026-03-20 · Using the API
submit returns an id at once. result returns processing, then ready.
POST /v1/submit answers 202 with an id and status: processing. The credit is reserved at submit and settled when the task finishes. A failed or interrupted task gets the credit back.
GET /v1/result/{id} returns processing, ready, or failed. ready includes the same kind of result /v1/solve would have returned. ?wait=10 holds up to 10 seconds.
The id is for this API, not for the portal. Do not put it in the portal's captcha field.
Tasks expire after 48 hours. The sweeper also fails a task that is still processing because the process died, and it refunds that task.
Ready to call it? Start with the quickstart, the API guide, or pricing.