> ## Documentation Index > Fetch the complete documentation index at: https://docs.extend.ai/llms.txt > Use this file to discover all available pages before exploring further. > > ## API version > The current API version is `2026-02-09`, served at the site root (no version prefix in URLs). > If this page URL contains `/2025-04-21/` or `/2024-12-23/`, you are reading an older API version. > Prefer the current docs at https://docs.extend.ai/llms.txt unless the user explicitly needs that older version. > Do not treat older-version pages as the source of truth for new integrations. # Cancel in-flight parse runs > POST /parse_runs/{id}/cancel aborts an in-progress parse run on the 2026-02-09 API and sets its status to CANCELLED. You can now cancel parse runs that are still processing. Call `POST /parse_runs/{id}/cancel` on the 2026-02-09 API to cancel an in-progress parse run and set its status to `CANCELLED`. Only runs with status `PROCESSING` can be cancelled. * **`POST /parse_runs/{id}/cancel`** — abort an in-progress parse run (2026-02-09 API) > Ship your document processing with Extend. Get started with our APIs, SDKs, and guides.