Agent IDE — Codex fork for AI-native development environment
ec4a2d07e4
## Summary - Stream proposed plans in Plan Mode using `<proposed_plan>` tags parsed in core, emitting plan deltas plus a plan `ThreadItem`, while stripping tags from normal assistant output. - Persist plan items and rebuild them on resume so proposed plans show in thread history. - Wire plan items/deltas through app-server protocol v2 and render a dedicated proposed-plan view in the TUI, including the “Implement this plan?” prompt only when a plan item is present. ## Changes ### Core (`codex-rs/core`) - Added a generic, line-based tag parser that buffers each line until it can disprove a tag prefix; implements auto-close on `finish()` for unterminated tags. `codex-rs/core/src/tagged_block_parser.rs` - Refactored proposed plan parsing to wrap the generic parser. `codex-rs/core/src/proposed_plan_parser.rs` - In plan mode, stream assistant deltas as: - **Normal text** → `AgentMessageContentDelta` - **Plan text** → `PlanDelta` + `TurnItem::Plan` start/completion (`codex-rs/core/src/codex.rs`) - Final plan item content is derived from the completed assistant message (authoritative), not necessarily the concatenated deltas. - Strips `<proposed_plan>` blocks from assistant text in plan mode so tags don’t appear in normal messages. (`codex-rs/core/src/stream_events_utils.rs`) - Persist `ItemCompleted` events only for plan items for rollout replay. (`codex-rs/core/src/rollout/policy.rs`) - Guard `update_plan` tool in Plan Mode with a clear error message. (`codex-rs/core/src/tools/handlers/plan.rs`) - Updated Plan Mode prompt to: - keep `<proposed_plan>` out of non-final reasoning/preambles - require exact tag formatting - allow only one `<proposed_plan>` block per turn (`codex-rs/core/templates/collaboration_mode/plan.md`) ### Protocol / App-server protocol - Added `TurnItem::Plan` and `PlanDeltaEvent` to core protocol items. (`codex-rs/protocol/src/items.rs`, `codex-rs/protocol/src/protocol.rs`) - Added v2 `ThreadItem::Plan` and `PlanDeltaNotification` with EXPERIMENTAL markers and note that deltas may not match the final plan item. (`codex-rs/app-server-protocol/src/protocol/v2.rs`) - Added plan delta route in app-server protocol common mapping. (`codex-rs/app-server-protocol/src/protocol/common.rs`) - Rebuild plan items from persisted `ItemCompleted` events on resume. (`codex-rs/app-server-protocol/src/protocol/thread_history.rs`) ### App-server - Forward plan deltas to v2 clients and map core plan items to v2 plan items. (`codex-rs/app-server/src/bespoke_event_handling.rs`, `codex-rs/app-server/src/codex_message_processor.rs`) - Added v2 plan item tests. (`codex-rs/app-server/tests/suite/v2/plan_item.rs`) ### TUI - Added a dedicated proposed plan history cell with special background and padding, and moved “• Proposed Plan” outside the highlighted block. (`codex-rs/tui/src/history_cell.rs`, `codex-rs/tui/src/style.rs`) - Only show “Implement this plan?” when a plan item exists. (`codex-rs/tui/src/chatwidget.rs`, `codex-rs/tui/src/chatwidget/tests.rs`) <img width="831" height="847" alt="Screenshot 2026-01-29 at 7 06 24 PM" src="https://github.com/user-attachments/assets/69794c8c-f96b-4d36-92ef-c1f5c3a8f286" /> ### Docs / Misc - Updated protocol docs to mention plan deltas. (`codex-rs/docs/protocol_v1.md`) - Minor plumbing updates in exec/debug clients to tolerate plan deltas. (`codex-rs/debug-client/src/reader.rs`, `codex-rs/exec/...`) ## Tests - Added core integration tests: - Plan mode strips plan from agent messages. - Missing `</proposed_plan>` closes at end-of-message. (`codex-rs/core/tests/suite/items.rs`) - Added unit tests for generic tag parser (prefix buffering, non-tag lines, auto-close). (`codex-rs/core/src/tagged_block_parser.rs`) - Existing app-server plan item tests in v2. (`codex-rs/app-server/tests/suite/v2/plan_item.rs`) ## Notes / Behavior - Plan output no longer appears in standard assistant text in Plan Mode; it streams via `PlanDelta` and completes as a `TurnItem::Plan`. - The final plan item content is authoritative and may diverge from streamed deltas (documented as experimental). - Reasoning summaries are not filtered; prompt instructs the model not to include `<proposed_plan>` outside the final plan message. ## Codex Author `codex fork 019bec2d-b09d-7450-b292-d7bcdddcdbfb` |
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| shell-tool-mcp | ||
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| .markdownlint-cli2.yaml | ||
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| AGENTS.md | ||
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| flake.nix | ||
| justfile | ||
| LICENSE | ||
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npm i -g @openai/codex
or brew install --cask codex
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 are looking for the cloud-based agent from OpenAI, Codex Web, go to chatgpt.com/codex.
Quickstart
Installing and running Codex CLI
Install globally with your preferred package manager:
# 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, Team, 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.