Alpha· Major · Confirmed

npm plugin sources and user-level review skills broaden customization

Codex added npm marketplace plugin sources, allowed user-level code-review skills, and exposed environment information through app-server.

Release activity: 2026-06-27

The strongest theme is extensibility: plugin distribution gains another source type, review workflows can consult user-level skills, and clients can query more environment context.

Alpha release context: 2 official tags were published that UTC day (rust-v0.143.0-alpha.27, rust-v0.143.0-alpha.28). The full comparison contains 19 commits and 136 changed files.

Evidence

Codex supports npm marketplace plugin sources.Why it matters: Plugin distribution is no longer limited to the previously supported source shapes.

Direct evidence · Confirmed

Supporting sources

[codex] Support npm marketplace plugin sources (#29375) commit · Official
rust-v0.143.0-alpha.26 to rust-v0.143.0-alpha.28 comparison tag-compare · Official

Conflicting sources

No conflicting sources recorded.

Codex can consult user-level code-review skills.Why it matters: Personal review guidance can participate in Codex review work without being copied into each repository.

Direct evidence · Confirmed

Supporting sources

Let Codex consult user-level code-review-* skills. (#30143) commit · Official
rust-v0.143.0-alpha.26 to rust-v0.143.0-alpha.28 comparison tag-compare · Official

Conflicting sources

No conflicting sources recorded.

App-server exposes an environment information RPC.Why it matters: App clients can inspect environment context through a defined protocol call rather than inferring it indirectly.

Direct evidence · Confirmed

Supporting sources

[app-server] expose environment info RPC (#30291) commit · Official
rust-v0.143.0-alpha.26 to rust-v0.143.0-alpha.28 comparison tag-compare · Official

Conflicting sources

No conflicting sources recorded.

Availability

Availability note: these sources establish repository and CLI release activity. They do not, by themselves, prove that the same changes were live in Codex Desktop.

Availability by surface

Surface	Status	Claim-level evidence
CLI	Prerelease · Documented · General	`claim-2026-06-27-npm-plugin-sources`: Prerelease · Documented · General · version 0.143.0-alpha.28 · source-release-2026-06-27 `claim-2026-06-27-review-skills`: Prerelease · Documented · General · version 0.143.0-alpha.28 · source-release-2026-06-27 `claim-2026-06-27-environment-rpc`: Prerelease · Documented · General · version 0.143.0-alpha.28 · source-release-2026-06-27
Desktop	Unknown · Unknown · Unknown	`claim-2026-06-27-npm-plugin-sources`: Unknown · Unknown · Unknown · source-release-2026-06-27 `claim-2026-06-27-review-skills`: Unknown · Unknown · Unknown · source-release-2026-06-27 `claim-2026-06-27-environment-rpc`: Unknown · Unknown · Unknown · source-release-2026-06-27
IDE	Unknown	No central-claim assertion recorded.
Cloud	Unknown	No central-claim assertion recorded.
Mobile	Unknown	No central-claim assertion recorded.