## Why Amazon Bedrock returns a `401 Unauthorized` response containing `Signature expired:` when an AWS credential, including a short-lived `AWS_BEARER_TOKEN_BEDROCK`, has expired. Codex currently surfaces that response as a generic `unexpected status` error, which does not explain how to recover. Environment-provided bearer tokens cannot be refreshed automatically, so the error should direct users to refresh their AWS credentials or replace or remove the environment token and restart Codex. This classification belongs to the Amazon Bedrock provider so similar responses from other providers retain their existing behavior. ## What changed - Add a synchronous `ModelProvider::map_api_error` hook that defaults to the existing provider-neutral API error mapping, and route model request, stream, WebSocket, and terminal unauthorized errors through the active provider. - Override the hook for Amazon Bedrock. After preserving the structured status, body, URL, and request metadata, recognize `401` responses containing `Signature expired:` and attach actionable credential guidance. - Keep `codex-protocol` provider-neutral by representing the guidance as an optional `user_message`. Error rendering prefers this message while continuing to append the URL, request ID, Cloudflare ray, and authorization diagnostics. - Add model-provider coverage for expired signatures and negative cases, core coverage for provider dispatch after unauthorized recovery, and a TUI snapshot for the rendered error. ## Testing Tested with a real request with expired bedrock key: <img width="962" height="126" alt="Screenshot 2026-06-22 at 3 56 51 PM" src="https://github.com/user-attachments/assets/7e21cc7c-798e-4662-8467-7f304a2f2b59" />
Codex CLI is a coding agent from OpenAI that runs locally on your computer.
If you want Codex in your code editor (VS Code, Cursor, Windsurf), install in your IDE.
If you want the desktop app experience, run
codex app or visit the Codex App page.
If you are looking for the cloud-based agent from OpenAI, Codex Web, go to chatgpt.com/codex.
Quickstart
Installing and running Codex CLI
Run the following on Mac or Linux to install Codex CLI:
curl -fsSL https://chatgpt.com/codex/install.sh | sh
Run the following on Windows to install Codex CLI:
powershell -ExecutionPolicy ByPass -c "irm https://chatgpt.com/codex/install.ps1 | iex"
Codex CLI can also be installed via the following package managers:
# Install using npm
npm install -g @openai/codex
# Install using Homebrew
brew install --cask codex
Then simply run codex to get started.
You can also go to the latest GitHub Release and download the appropriate binary for your platform.
Each GitHub Release contains many executables, but in practice, you likely want one of these:
- macOS
- Apple Silicon/arm64:
codex-aarch64-apple-darwin.tar.gz - x86_64 (older Mac hardware):
codex-x86_64-apple-darwin.tar.gz
- Apple Silicon/arm64:
- Linux
- x86_64:
codex-x86_64-unknown-linux-musl.tar.gz - arm64:
codex-aarch64-unknown-linux-musl.tar.gz
- x86_64:
Each archive contains a single entry with the platform baked into the name (e.g., codex-x86_64-unknown-linux-musl), so you likely want to rename it to codex after extracting it.
Using Codex with your ChatGPT plan
Run codex and select Sign in with ChatGPT. We recommend signing into your ChatGPT account to use Codex as part of your Plus, Pro, Business, Edu, or Enterprise plan. Learn more about what's included in your ChatGPT plan.
You can also use Codex with an API key, but this requires additional setup.
Docs
This repository is licensed under the Apache-2.0 License.
