Sign-in failing when connecting AI tools to Massive

Incident Report for Massive Inc

Resolved

This incident has been resolved.

Posted Sep 28, 2026 - 09:48 EDT

Investigating

Beginning no later than 8:25 PM ET on Sunday, September 27, connecting or reconnecting ChatGPT, Claude, Codex, and other AI tools to Massive through our remote MCP server fails at the sign-in step, often with an "invalid_client" error. The REST API and API-key access are unaffected.

Posted Sep 28, 2026 - 09:19 EDT