Intermittent MCP Connector "ConnectorClientServerError: 502: “Server returned 502: 'Upstream or external service errors” - tools/call never reaches server
Hi @Muhammed.Shaheen, that’s a rough one when the call never even makes it through.
This lines up with a recent OpenAI-side outage where MCP connectors were returning 502s before hitting downstream services. So it may not be coming from your setup.
You can check the status here to see the incident details: OpenAI Status Page
Separately, can you confirm if you’re still seeing the issue right now? That’ll help narrow down if it was tied to that event or something ongoing.
-Mark G.
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looks like we are not seeing issue now
@Muhammed.Shaheen, got it, that’s a relief.
This lines up with that earlier outage behavior where requests weren’t even reaching downstream, so it likely wasn’t anything on your side.
If it stays stable, you should be good. If it comes back, worth checking the status page again just to rule that out quickly.
-Mark G.
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