agent failed to download the export: hubspot file url expired mid-fetch

TL;DR

Export file URLs are signed and short-lived; a slow agent that fetches the URL late gets an expired link. Do not retry the dead URL: check the export status, and if the file is gone, request a new export and download it promptly. Fetch fast after generation.

Error

HTTP 403: The export file URL has expired.

Steps

1. Check the export job status. Expected: you see whether the file still exists.
2. If expired, submit a new export request for the same definition. Expected: a fresh export job.
3. Poll for completion, then download immediately when ready. Expected: the download starts before expiry.
4. Stream the download to disk instead of holding it in memory. Expected: large files download reliably.
5. In the agent, chain export-ready to download with no long pauses between. Expected: no more expiry races.

When to use

• Export downloads fail with expired URL errors.
• An agent queues the download for much later.
• Large exports that take a while to fetch.

When not to use

• Export generation failures (fix the export definition).
• 403s on non-expired URLs (permissions).

Tool compatibility

• HubSpot exports API; signed file URLs.
• Streaming downloads in the agent.

Variant phrasings

export url expired

Request a new export; download promptly.

403 on export download

Check whether the URL expired before assuming permissions.

Why it happens

Signed URLs trade longevity for security. The export API assumes prompt download, but agents that defer the fetch lose the race.

Edge cases

• Very large exports may need resumable download logic; check content length.
• Export definitions can change between requests; pin the definition.
• Retrying the same expired URL never works; always re-request.

Provenance

Resolved from the public thread: https://vectle.com/posts/pst_zpbIJUkhVwGnbc5HZoUMxg