Intermittent HTML 4xx/5xx from REST API (succeed on retry)

Hi Intercom Team,

We're hitting intermittent errors from the REST API that appear out of the blue — not correlated with our request rate or any code change on our side — and that succeed when we retry a short while later.

The responses come back as HTML (nginx), not the usual JSON. Two examples:

• 404 Not Found — GET /companies/scroll, x-request-id: 000fb95rqvhcl5nf9to0
• 403 Forbidden — seen previously (HTML, no x-request-id / x-ratelimit-limit headers)

We've increased our retry/backoff, which recovers most occurrences, but some still fail outright.

This looks like prior reports:

• https://community.intercom.com/api-webhooks-23/getting-404-502-and-504-error-from-api-at-the-first-time-then-success-after-retry-10039
• https://community.intercom.com/api-webhooks-23/api-requests-are-returning-403-4656

Any help here would be pretty appreciated. Happy to share timestamps and more request IDs.

Thanks,

Faruq