# cli

Anthropic has finally released an official CLI tool, ant. Written in Go, it features a resource-oriented architecture, built-in file injection, and GJSON transforms. No more manually assembling curl headers every time you call the Claude API.

Nick Baumann isn't chasing MCP or the next protocol. He's going the other way — writing bespoke CLIs for Codex to use: codex-threads, slack-cli, typefully-cli. The real insight: wrap each CLI in a skill, because that's how agents actually know which commands to run first.

Browser Use releases CLI 2.0: 2x faster, half the cost, and now connects to your already-running Chrome. This is the tool that gives AI agents actual hands.

Many teams treat Claude Code and Codex as interchangeable tools, only to waste hours on misconfiguration. This article breaks down the fundamental differences in their control planes and trust models, with a practical day-one setup guide.

Claude Code CLI's core philosophy is think first, act later: SWE-bench gains, Plan Mode, Extended Thinking, multi-agent architecture, and WebSearch. Opus even researched Claude Code's latest features and reviews from inside a secure Podman container.

Codex CLI is built with Rust, open-sourced under Apache 2.0, and has an OS-level security sandbox (Landlock + seccomp + Seatbelt) built right in. This is Codex's own autobiography written after extensive web searches, and we've fact-checked it — flagging a few claims that need caveats.

Gemini CLI's 1M token big eater context, built-in Web Search grounding, free and open-source. Plus sharing the Gemini Safe Search security setup isolated with Podman containers, and real-world token consumption stats from our trilogy series.

Karpathy argues CLIs are the natural interface for agents precisely because they are legacy tech: text in, text out. His Claude Polymarket terminal demo lands the bigger question: can agents access and use your product?

Simon Willison argues CLI tools beat MCP for coding agents in most cases: lower token cost, no extra dependencies, and native --help affordances. Anthropic's code-execution-with-MCP proposal admits the token-waste problem too.

Obsidian v1.12 ships an official CLI that lets you control your entire vault from the terminal. On the surface it's a power user tool — underneath, it's paving the road for AI agents. This article covers the full CLI command reference and demonstrates real Claude Code + Obsidian CLI workflows.