a67a67f325
This PR overhauls how active tool calls and completed tool calls are displayed: 1. More use of colour to indicate success/failure and distinguish between components like tool name+arguments 2. Previously, the entire `CallToolResult` was serialized to JSON and pretty-printed. Now, we extract each individual `CallToolResultContent` and print those 1. The previous solution was wasting space by unnecessarily showing details of the `CallToolResult` struct to users, without formatting the actual tool call results nicely 2. We're now able to show users more information from tool results in less space, with nicer formatting when tools return JSON results ### Before: <img width="1251" alt="Screenshot 2025-06-03 at 11 24 26" src="https://github.com/user-attachments/assets/5a58f222-219c-4c53-ace7-d887194e30cf" /> ### After: <img width="1265" alt="image" src="https://github.com/user-attachments/assets/99fe54d0-9ebe-406a-855b-7aa529b91274" /> ## Future Work 1. Integrate image tool result handling better. We should be able to display images even if they're not the first `CallToolResultContent` 2. Users should have some way to view the full version of truncated tool results 3. It would be nice to add some left padding for tool results, make it more clear that they are results. This is doable, just a little fiddly due to the way `first_visible_line` scrolling works 4. There's almost certainly a better way to format JSON than "all on 1 line with spaces to make Ratatui wrapping work". But I think that works OK for now.
Codex CLI (Rust Implementation)
We provide Codex CLI as a standalone, native executable to ensure a zero-dependency install.
Installing Codex
Today, the easiest way to install Codex is via npm, though we plan to publish Codex to other package managers soon.
npm i -g @openai/codex@native
codex
You can also download a platform-specific release directly from our GitHub Releases.
Config
Codex supports a rich set of configuration options. See config.md for details.
Model Context Protocol Support
Codex CLI functions as an MCP client that can connect to MCP servers on startup. See the mcp_servers section in the configuration documentation for details.
It is still experimental, but you can also launch Codex as an MCP server by running codex mcp. Using the @modelcontextprotocol/inspector is
npx @modelcontextprotocol/inspector codex mcp
Code Organization
This folder is the root of a Cargo workspace. It contains quite a bit of experimental code, but here are the key crates:
core/contains the business logic for Codex. Ultimately, we hope this to be a library crate that is generally useful for building other Rust/native applications that use Codex.exec/"headless" CLI for use in automation.tui/CLI that launches a fullscreen TUI built with Ratatui.cli/CLI multitool that provides the aforementioned CLIs via subcommands.