Intellistack incident

Formstack Sign API Authentication Issues

Resolved after 1 day 7 hours, affecting API and Documents, on September 29, 2026.

resolved Sep 30, 2026, 10:28 PM UTC

All known issues with the Sign API and our authentication migration are now resolved and complete.

Started
Sep 29, 2026, 02:49 PM UTC
Resolved
Sep 30, 2026, 10:28 PM UTC
Duration
1d 7h
Detected by Pingoru
Sep 29, 2026, 02:49 PM UTC

Affected components

APIDocuments

Update timeline

  1. investigating Sep 29, 2026, 02:49 PM UTC

    We are investigating reports that some Formstack Sign customers are unable to send documents through the API. Affected requests may return a “Request requires authentication” error despite successfully generating an access token. Some customers may also see a null API secret within their account. Our team is actively investigating and will provide additional updates as more information becomes available.

  2. identified Sep 29, 2026, 03:58 PM UTC

    The issue has been identified and a fix is being implemented.

  3. monitoring Sep 29, 2026, 07:24 PM UTC

    A fix has been implemented and we are monitoring the results.

  4. resolved Sep 30, 2026, 10:28 PM UTC

    All known issues with the Sign API and our authentication migration are now resolved and complete.

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