Error: MCP client for <mcp name> failed to start: MCP startup failed: missing field type #7416
Description
What version of Codex is running?
codex-cli 0.64.0-alpha.9
What subscription do you have?
unrelated
Which model were you using?
unrelated
What platform is your computer?
Linux 6.17.9-arch1-1 x86_64 unknown
What issue are you seeing?
In the start up of codex-cli, I have errors like:
⚠ error: MCP client for `<mcp name>` failed to start: MCP startup failed: missing field `type`
Cause
Because some of the the corresponding Rust SDK types do not have a field type, convert_to_mcp() in codex-rs/rmcp-client/src/utils.rs may return an error.
What steps can reproduce the bug?
In my machine, with the following config:
[mcp_servers.<mcp name>]
command = "mcp-server-filesystem"
args = ["<directory>"]
just running $ codex produce the error
error: MCP client for `<mcp name>` failed to start: MCP startup failed: missing field `type`
What is the expected behavior?
No response
Additional information
No response