We are in the middle of significantly improving support for connecting to MCP servers including support for streamable http servers with optional bearer token or oauth login support.

Enable the experimental_use_rmcp_client = true flag in config.toml to use the new MCP stack. If you encounter issues, create a GitHub issue and add the mcp label. We would like to remove the experimental flag soon and will continue to expand MCP support over time.

What's Changed

[MCP] Fix the bearer token authorization header by @gpeal in https://github.com/openai/codex/pull/4846
Print codex resume note when quitting after codex resume by @nornagon-openai in https://github.com/openai/codex/pull/4695
Use Number instead of BigInt for TokenCountEvent by @ccy-oai in https://github.com/openai/codex/pull/4856
Simplify request body assertions by @pakrym-oai in https://github.com/openai/codex/pull/4845
Fix zsh completion by @tamird in https://github.com/openai/codex/pull/4692
[Cloud Tasks] Use workspace deps by @tamird in https://github.com/openai/codex/pull/4693
Simplify parallel by @pakrym-oai in https://github.com/openai/codex/pull/4829
[TUI] Remove bottom padding by @gpeal in https://github.com/openai/codex/pull/4854
[TUI] Dynamic width for line numbers in diffs by @nornagon-openai in https://github.com/openai/codex/pull/4664
[TUI] Wrapping bugfix by @nornagon-openai in https://github.com/openai/codex/pull/4674
Fix flaky test by @jif-oai in https://github.com/openai/codex/pull/4878
list_dir tool by @jif-oai in https://github.com/openai/codex/pull/4817
[TUI] Breathing spinner on true-color terms by @nornagon-openai in https://github.com/openai/codex/pull/4853
[TUI] Remove instruction hack for /review by @dedrisian-oai in https://github.com/openai/codex/pull/4896
Set codex SDK TypeScript originator by @pakrym-oai in https://github.com/openai/codex/pull/4894
[TUI] Bring the transcript closer to display mode by @nornagon-openai in https://github.com/openai/codex/pull/4848
[TUI] Switch to tree-sitter-highlight bash highlighting by @nornagon-openai in https://github.com/openai/codex/pull/4666
remove experimental prefix by @rakesh-oai in https://github.com/openai/codex/pull/4907
[MCP] Add the ability to explicitly specify a credentials store by @gpeal in https://github.com/openai/codex/pull/4857
[MCP] Add support for streamable http servers with codex mcp add and replace bearer token handling by @gpeal in https://github.com/openai/codex/pull/4904
featgrep_files as a tool by @jif-oai in https://github.com/openai/codex/pull/4820
CLI UP/ENTER by @jif-oai in https://github.com/openai/codex/pull/4944
change log_sse_event() so it no longer takes a closure by @bolinfest in https://github.com/openai/codex/pull/4953
truncate on compact by @jif-oai in https://github.com/openai/codex/pull/4942
Fix transcript mode rendering issue when showing tab chars by @dedrisian-oai in https://github.com/openai/codex/pull/4911
[TUI] hardcode xterm palette, shimmer blends between fg and bg by @nornagon-openai in https://github.com/openai/codex/pull/4957
[MCP] Add an enabled config field by @gpeal in https://github.com/openai/codex/pull/4917
Make context line permanent by @dedrisian-oai in https://github.com/openai/codex/pull/4699
[MCP] Add auth status to MCP servers by @gpeal in https://github.com/openai/codex/pull/4918
[TUI] fix off-by-16 in terminal_palette by @nornagon-openai in https://github.com/openai/codex/pull/4967
Create alias by @rakesh-oai in https://github.com/openai/codex/pull/4971
Set chat name by @dedrisian-oai in https://github.com/openai/codex/pull/4974
revert /name for now by @dedrisian-oai in https://github.com/openai/codex/pull/4978

New Contributors

@ccy-oai made their first contribution in https://github.com/openai/codex/pull/4856
@tamird made their first contribution in https://github.com/openai/codex/pull/4692

Full Changelog: https://github.com/openai/codex/compare/rust-v0.45.0...rust-v0.46.0