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API Reference
DraftLast reviewed 2026-06-23

Cancel running simulation

POST 
/api/v1/simulations/:id/cancel

Sets the cancellation flag for the simulation. The engine checks this flag between pages and stops gracefully.

Worst-case cancel latency = one page processing time + one statement timeout (C3). Already-persisted partial results are retained and the run is resumable.

Returns HTTP 409 if the simulation is already in a terminal state (completed, failed, or cancelled).

Request​

Responses​

Cancellation flag set; returns current progress