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Tools2026-09-15 · source-backed
The 60 commits between rust-v0.155.0-alpha.4 and alpha.6, published September 15 with an empty release body as every Codex alpha has, include configuring the Guardian prompt template (#45516), Guardian reviewers routed through ThreadManager for inline parents (#45518), reviewer lifecycle moved into a pool and then an extension (#45521, #45537), and Guardian's subagent-spawner plumbing removed (#45491) (GitHub). Guardian is the reviewer subagent gating shell, file-write, network and MCP calls, so a configurable prompt template means teams encode their own risk policy in the auto-approve path rather than accepting OpenAI's.
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The result-interception hook (#41202) is a place to redact secrets or strip injected instructions out of untrusted MCP output before it enters context, which is the missing seam in every MCP setup I've built. Also: a configurable grace period for discovering tools from optiona...
Published September 7, it puts OpenAI Codex in the agent picker with a copy-ready ~/.codex/config.toml panel pointing Codex CLI and Desktop at Manifest over the Responses API (GitHub). Two compatibility fixes make it work: Responses-API role: "developer" instruction messages f...
A standalone macOS and Windows desktop beta released September 14, moving the open-source agent out of the VS Code extension slot; the releases page shows Desktop v0.0.26 on September 11, v0.0.27 on September 13 and v0.0.28 on September 15, so it's shipping daily (GitHub). It...
PR #44870, merged September 11 and in rust-v0.155.0-alpha.4, pulls worktrees out of /experimental. A local daemon missing thread/backgroundTerminals/list now blocks worktree creation and /cd with upgrade instructions rather than failing obscurely. The 80-commit window also wir...
Rust, created May 14, at 2,643 stars (GitHub). Every run produces checkpoints linking a commit to the session that made it, including prompts, tool calls and reasoning. It runs Claude Code, Codex, its own agent and anything from the ACP registry side by side against one codeba...
Released 01:58 UTC on September 1, demoting update_plan to opt-in, so you need tools.update_plan.enabled = true in config to get planning back (GitHub). It also adds output_token_limit per individual MCP tool with truncation that survives session resume, allows :, @, / and . i...
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