MCP tool call broken in version 0.64.0

Resolved 💬 2 comments Opened Dec 3, 2025 by benarroyo Closed Dec 3, 2025

What version of Codex is running?

0.64.0

What subscription do you have?

Plus

Which model were you using?

gpt-oss

What platform is your computer?

MacOS

What issue are you seeing?

MCP tool call is broken in version 0.64.0.
Seems like arguments are missed:

• Called jetbrains.search_in_files_by_text()
  └ MCP tool call has been failed: No argument is passed for required parameter 'searchText'

Downgrading to version 0.63.0 fixes the issue.

What steps can reproduce the bug?

Register an MCP and force the agent to call it with arguments.

What is the expected behavior?

Correctly invoke the MCP including the arguments in the call.

Additional information

This is a regression issue. Works fine in version 0.63.0

View original on GitHub ↗

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