0.43.0-alpha.4

rust-v0.43.0-alpha.4

Release 0.43.0-alpha.4

0.43.0-alpha.3

rust-v0.43.0-alpha.3

Release 0.43.0-alpha.3

0.43.0-alpha.2

rust-v0.43.0-alpha.2

Release 0.43.0-alpha.2

0.43.0-alpha.1

rust-v0.43.0-alpha.1

Release 0.43.0-alpha.1

0.42.0

Notable Changes

• Experimental Rust SDK–based MCP client introduced (#4252)
• New responses-api-proxy component to simplify and secure response handling/proxying (#4246)
• Added secure mode: CODEX_SECURE_MODE=1 to restrict process observability (#4220)
• More explicit codex exec events, including item.started and improved output display (#4177, #4250, #4113)
• Safer command execution: dangerous command checks in core and Windows-specific safety (#4211, #4119)
• UX improvements: revamped /status with clearer presentation and details, pageless session list, approvals moved to ListSelectionView, better MCP tool call styling, and hiding status indicator during streaming (#3194, #4275, #3871, #4101, #4196)
• Stability and correctness: token usage fix for compaction, SSE mounting reliability, and improving bugs on editing previous conversations (#4281, #4264, #4237)
• IDE extension reliability: fix login with API key when .codex directory is missing (#4258)
• Internal cleanup and refactors for state, footer logic, and unused code (#4174, #4259, #4310)

Merged PRs

• [#4304] /status followup (#4304)
• [#4310] chore: dead code removal; remove frame count and stateful render helpers (#4310)
• [#4252] [MCP] Introduce an experimental official rust sdk based mcp client (#4252)
• [#4255] Add todo-list tool support (#4255)
• [#4246] feat: introduce responses-api-proxy (#4246)
• [#4281] fix: token usage for compaction (#4281)
• [#4113] Show exec output on success with trimmed display (#4113)
• [#4275] Move approvals to use ListSelectionView (#4275)
• [#4259] Refactor the footer logic to a new file (#4259)
• [#4229] ref: state - 2 (#4229)
• [#4211] core: add potentially dangerous command check (#4211)
• [#4264] Actually mount sse once (#4264)
• [#4254] Add codex exec testing helpers (#4254)
• [#4258] Fixed login failure with API key in IDE extension when a .codex directory doesn't exist (#4258)
• [#4256] fix typo in sandbox doc (#4256)
• [#4250] [codex exec] Add item.started and support it for command execution (#4250)
• [#4251] fix (#4251)
• [#4248] fix bug when resizing to a smaller width (#4248)
• [#4067] make tests pass cleanly in sandbox (#4067)
• [#4204] Fix error message (#4204)
• [#4177] Add explicit codex exec events (#4177)
• [#4194] chore: refactor attempt_stream_responses() out of stream_responses() (#4194)
• [#4237] fix: esc w/ queued messages overwrites draft in composer (#4237)
• [#4220] feat: add support for CODEX_SECURE_MODE=1 to restrict process observability (#4220)
• [#4196] revamp /status (#4196)
• [#4174] ref: full state refactor (#4174)
• [#4205] github: update codespell action to v2.1 in workflow (#4205)
• [#4195] Send text parameter for non-gpt-5 models (#4195)
• [#4188] chore: drop unused values from env_flags (#4188)
• [#4119] adds a windows-specific method to check if a command is safe (#4119)
• [#3194] pageless session list (#3194)
• [#3871] improve MCP tool call styling (#3871)
• [#4101] hide the status indicator when the answer stream starts (#4101)
• [#4160] Simplify tool implemetations (#4160)

0.42.0-alpha.3

rust-v0.42.0-alpha.3

Release 0.42.0-alpha.3

0.42.0-alpha.2

rust-v0.42.0-alpha.2

Release 0.42.0-alpha.2

0.42.0-alpha.1

rust-v0.42.0-alpha.1

Release 0.42.0-alpha.1

0.41.0

Highlights:

• Rate limits visibility: You can see when is your limits resetting (#4111) and see your usage when rate limited (#4102)
• You can specify output schema in exec mode using output-schema. (#4079)
• Ripgrep (rg) is now vendored into the npm release (#3660), which should fix issues such as #3842 where the postinstall step of @vscode/ripgrep would sometimes fail when installing codex via npm.

Merged PRs:

#4090 feat: readiness tool
#4088 chore: compact do not modify instructions
#4069 refactor codex card layout
#4105 Use anyhow::Result in tests for error propagation
#4079 Add exec output-schema parameter
#4102 Send limits when getting rate limited
#3461 [exec] add include-plan-tool flag and print it nicely
#3660 fix: vendor ripgrep in the npm module
#4112 fix: npm publish --tag alpha when building an alpha release
#4031 chore(deps): bump serde from 1.0.224 to 1.0.226 in /codex-rs
#4027 chore(deps): bump log from 0.4.27 to 0.4.28 in /codex-rs
#4030 chore(deps): bump tempfile from 3.20.0 to 3.22.0 in /codex-rs
#4135 nit: update auto compact to 250k
#4137 nit: drop instruction override for auto-compact
#4140 chore: extract readiness in a dedicated utils crate
#4111 Add Reset in for rate limits
#4156 nit: 350k tokens
#4124 chore: upgrade to Rust 1.90
#4162 fix: add tolerance for ambiguous behavior in gh run list
#4154 chore: remove once_cell dependency from multiple crates
#2156 chore(deps): bump unicode-width from 0.1.14 to 0.2.1 in /codex-rs
#4028 chore(deps): bump chrono from 0.4.41 to 0.4.42 in /codex-rs

0.41.0-alpha.1

rust-v0.41.0-alpha.1

Release 0.41.0-alpha.1