OpenAI · 2026-04-15 · notable
OpenAI Codex CLI v0.121.0 — Marketplace Plugins, TUI History, and Memory Controls
Codex CLI 0.121.0 adds plugin marketplace installs from GitHub/git URLs/local dirs, TUI prompt history with Ctrl+R search, per-mode memory controls, MCP parallel-call opt-in, and a bubblewrap devcontainer profile. 75.6k stars, 70+ PRs.
Codex CLI adds a marketplace command for git-hosted plugin installs, Ctrl+R prompt history, and per-mode memory controls.
Key specs
| GitHub stars | 75.6k |
|---|---|
| Prs in release | 70+ |
| Install | npm install -g @openai/codex@0.121.0 |
What is it?
OpenAI Codex CLI is the official terminal-native AI coding agent — a Rust-based tool with 75.6k GitHub stars for writing code, fixing bugs, and running long-horizon tasks in a sandboxed environment. Version 0.121.0 ships 70+ pull requests including the new marketplace plugin system and several ergonomics upgrades.
How does it work?
The new `codex marketplace add <url>` command installs plugin marketplaces from a GitHub repo, git URL, local directory, or direct marketplace.json URL — no npm publishing required. The TUI now stores prompt history locally; Ctrl+R opens reverse search across past prompts. Memory controls let you adjust memory mode, reset memory, and clean up memory extensions without leaving the TUI. MCP plugins gain namespaced registration, parallel-call opt-in, and sandbox-state metadata. A new secure devcontainer profile adds bubblewrap sandboxing for Linux environments.
Why does it matter?
The marketplace command changes the extensibility story for Codex — any team can publish and share Codex plugins as a plain git repo without needing npm access. TUI history with reverse search closes a long-standing ergonomics gap for developers who run long coding sessions. Together they make Codex significantly more self-contained and configurable without heavier IDE tooling.
Who is it for?
Developers using Codex CLI daily who want plugin extensibility and better session ergonomics.
Try it
npm install -g @openai/codex@0.121.0