May 2026: 403 errors connecting to MCP clients
Omni Analytics experienced a 3.3-hour outage where users encountered 403 "Invalid bearer token" errors when using MCP integrations through callbacks.omniapp.co (Claude, ChatGPT, etc.), affecting the EastUsa and Ireland regions. The issue was caused by a regression in OAuth token handling for MCP tool calls that was introduced in a recent deployment, preventing users from performing actions like listing models or running queries despite successful initial connections. The service was restored after deploying a patch to fix the authentication token handling.