public compatibility index
Tested in public.
The index shows observed outcomes for representative MCP server surfaces. Claude Code and Cursor are live today. ChatGPT Desktop is next; Codex CLI and Zed are planned columns.
dated 2026-06-10 / sorted by release risk
Current matrix
ChatGPT Desktop is coming soon. Codex CLI and Zed are planned. Muted columns activate when their emulation profiles are calibrated.
server surfaceriskclaudecursorchatgptcodexzedverdictupdated
filesystem toolsHIGHPASSFAIL---BLOCKJun 10
postgres queryMEDIUMPASSPASS---SHIPJun 10
repo writerHIGHPASSFAIL---BLOCKJun 09
browser controlMEDIUMPASSWARN---REVIEWJun 09
calendar writeMEDIUMPASSPASS---SHIPJun 08
github issuesLOWPASSPASS---SHIPJun 08
linear triageLOWPASSPASS---SHIPJun 07
slack searchLOWPASSPASS---SHIPJun 07
redis adminHIGHWARNPASS---REVIEWJun 06
notion exportMEDIUMPASSWARN---REVIEWJun 06
kubernetes readHIGHPASSPASS---SHIPJun 05
stripe lookupLOWPASSPASS---SHIPJun 05
what a cell means
Not a benchmark. A release signal.
PASSship
All nine checks completed and no high severity security rule fired.
WARNreview
The server works, but client behavior diverges or a medium finding needs a fix.
FAILblock
A client cannot safely complete the flow, or the scan found release-blocking risk.
your server is not in the table