MCP submission blocked: "Each MCP tool must set readOnlyHint, openWorldHint, destructiveHint" despite correct server config

ChatGPT Apps SDK
1

Hi,

Stuck on MCP submission in the ChatGPT Apps platform. Looking to see if others hit the same wall.

After “Scan Tools” succeeds and all tools are detected, the form
throws:

Each MCP tool must set readOnlyHint, openWorldHint, and
destructiveHint to true or false.

Banner persists even after filling every justification field, blocking “Continue”.

Already verified

  • All three annotations set as booleans in the server’s tool
    definitions
  • MCP Inspector validates cleanly
  • “Scan Tools” on OpenAI side detects every tool
  • Justifications filled for every tool and hint
  • Bumped version, cleared cache, refreshed MCP URL

Context

Found an existing GitHub issue from February with a March follow-up
reporting identical behavior. Still pending.

Questions

  1. Anyone submitted successfully in the last weeks?
  2. Platform-side bug or a specific annotation shape expected beyond
    the MCP spec?
  3. Known workaround?

Happy to share schemas in DM. Thanks

image
image1488×1042 79.4 KB

2

Thanks for pointing this out! This should be fixed now, apologies for the inconvenience.