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A production-oriented Python rebuild of Claude Code — real architecture, reliable CLI agent
Ported from the TypeScript reference implementation and extended with a Python-native runtime
🔥 Active Development • New Features Weekly 🔥
git clone https://github.com/agentforce314/clawcodex.git
cd clawcodex
python3 -m venv .venv && source .venv/bin/activate # Python 3.10+
pip install -r requirements.txt
python -m src.cli login # writes config to ~/.clawcodex/config.json
python -m src.cli # start the REPL- 2026-06-11: Codebase stats — Total Python files: 1,093 files; Total Lines of Python Code: 233,520 lines (up from 213,777 lines on 2026-05-29; ~+19.7k lines from the interactive command-system batch, the dynamic workflow engine +
/deep-research, and the Tavily web-tooling refresh). - 2026-06-10 to 2026-06-11: Dynamic workflow engine +
/deep-research(#262–#264, #266–#271) — Python workflow engine core (agent()/parallel()/pipeline()/phase(), journaling, resume) wired end-to-end: Workflow tool,/workflowsTUI dialog + status-line pill, per-agent retry, worktree isolation, result delivery, and the bundled/deep-researchharness registered as a slash command. Reliability: LLM read timeout applied centrally to all openai-compatible providers (#269), parallel agents no longer serialize on the event loop (#270), and the deep-research synthesize step forbids tools so the report-writer can't loop (#271). Follow-ups: workflow max-turns cap fix (#272), deep-research verdict-enum fix (#273), rich/workflowslive monitor with phase progress + per-agent stats (#287). - 2026-06-10: Web tooling refresh (#265) — dead DuckDuckGo scraping replaced with a Tavily-backed WebSearch plus config-backed secrets storage; WebFetch rebuilt with deterministic markdown/text/html extraction (borrowed from opencode).
- 2026-05-30 to 2026-06-09: Interactive command-system parity (#230–#261) — interactive ports of
/theme,/effort,/model,/logo,/mcp,/tasks,/diff,/export,/output-style,/statusline,/release-notes,/copy,/vim,/memory,/stickers, and/rename, built on a new prompt-text primitive and interactive command bridge; skill registration and model tool-exposure wiring; the session-persistence producer (SessionPersister+ agent-bridge wiring); plus extended thinking support (#249) and a model error-swallow fix (#250). - 2026-05-29: Codebase stats — Total Python files: 977 files; Total Lines of Python Code: 213,777 lines (up from 183,768 lines on 2026-05-21; ~+30k lines from the remote-bridge parity port (phases 0–18) plus the
/buddycompanion subsystem and the CLI transport layer). - 2026-05-29: Remote-bridge parity + CLI transports (#200–#226) — full port of the remote-control bridge across phases 0–18: bridge API client, child-CLI session runner, env-less v2 orchestrator, multi-session daemon, worktree spawn, in-place reconnect, perpetual mode with crash recovery, JWT refresh, and the v1
WebSocketTransport/SerialBatchEventUploaderwrite path with hybrid dispatch. Plus the CLI transport factory, coalescing worker-state uploader, andRemoteIObridge (#226); new/buddyvirtual-companion command — hatch / pet / status / mute (#225). - 2026-05-21: Codebase stats — Total Python files: 890 files; Total Lines of Python Code: 183,768 lines (up from 177,428 lines on 2026-05-16; net −4 files from the
src/tool_system/agent_loop.pyconsolidation intosrc/query/query.py). - 2026-05-21:
/advisortoken-efficient coding mode (#181–#193) — pair a cheap worker (haiku-4-5, $1/$5 per Mtok) with an expensive reviewer (opus-4-7, $5/$25) consulted only at decision points; ~6× cheaper than opus-only on typical sessions. Explicit<provider>:<model>syntax, cross-provider routing (e.g.deepseek/deepseek-v4-proworker +claude-opus-4-7advisor via litellm), and live worker/advisor token + USD cost in the status bar. - 2026-05-16: Codebase stats — Total Python files: 894 files; Total Lines of Python Code: 177,428 lines (up from 167,034 lines on 2026-05-14; ~+10.4k lines in two days, mostly ESC-cancellation hardening + image-handling parity).
- 2026-05-16: Image-handling parity (Tier C, #149/#154/#155/#156) — Read tool TS image pipeline (sniff, resize/compress, base64 cap);
@image.pngmentions inline as realImageBlocks instead of mojibake; cross-provider Anthropicimage/document→ OpenAIimage_url/filetranslation; pre-API base64 size validation inBaseProvider.
📚 Older items have moved to the full News archive.
ClawCodex is a production-oriented Python rebuild of Claude Code, ported from the real TypeScript architecture and shipped as a working CLI agent, not just a source dump.
- Real Agent Runtime — tool-calling loop, streaming REPL, session history, and multi-turn execution
- High-Fidelity Port — keeps the original Claude Code architecture while adapting it to idiomatic Python
- Built to Hack On — readable Python codebase, rich tests, and markdown-driven skill extensibility
- Multi-LLM providers — the biggest step forward vs. upstream: Claude Code is built around Claude-series models only; ClawCodex is dedicated to wiring in all major LLM providers so you can choose the most flexible and cost-effective stack for agentic coding
A real Claude Code-style terminal workflow in Python: stream replies, call tools, fetch context, and extend behavior with skills.
🚀 Try it now! Fork it, modify it, make it yours! Pull requests welcome!
On the full SWE-bench Verified split (499 instances, the public agent-coding leaderboard), both agents driven by Gemini 2.5 Pro under our standardized harness:
| Agent | Resolved | Unresolved | Error |
|---|---|---|---|
| clawcodex | 291 / 499 (58.2%) | 124 | 84 |
| openclaude | 265 / 499 (53.0%) | 144 | 90 |
- ✅ Both solved: 241 🟢 Only clawcodex: 50 🔵 Only openclaude: 24 ❌ Neither: 184
Reproduce locally — see eval/README.md for the full workflow (cumulative batching, --predict-workers N, --capture-traces).
View star history on star-history.com
>>> /stream on
>>> Explain tests/test_agent_loop.py
[streaming answer...]
• Read (tests/test_agent_loop.py) running...
↳ lines 1-180
>>> /render-last
- True API streaming for direct replies plus richer streaming during tool-driven agent loops
- Built-in
/streamtoggle for live output and/render-lastfor clean Markdown re-rendering on demand - Designed for real terminal demos: streaming text, visible tool activity, and stable fallback behavior
---
description: Explain code with diagrams and analogies
allowed-tools:
- Read
- Grep
- Glob
arguments: [path]
---
Explain the code in $path. Start with an analogy, then draw a diagram.- Markdown-based
SKILL.mdslash commands - Supports project skills, user skills, named arguments, and tool limits
ClawCodex’s main advantage is multi-provider support: while Claude Code targets Claude models, we aim to support every major LLM provider behind the same agent runtime—so you can swap vendors, regions, and price tiers without giving up tools, skills, or the coding loop. That flexibility is what makes agentic coding practical at scale.
providers = ["anthropic", "openai", "glm", "minimax", "openrouter", "deepseek"] # OpenAI-compatible & GLM APIs; more can be addedThe default interactive UI is the inline prompt_toolkit + Rich REPL (transcript in scrollback, tool-aware status row). Use clawcodex --tui or the /tui slash command inside the REPL to launch the Textual in-app experience when you want it.
>>> Hello!
Assistant: Hi! I'm ClawCodex, a Python reimplementation...
>>> /help # Show commands
>>> /tools # List registered tools
>>> /tui # Hand off to the Textual TUI
>>> /stream on # Live response rendering
>>> /save # Save session
>>> Tab # Auto-complete
>>> /explain-code qsort.py # Run a SKILL.md skill (or /skill …)
# Multi-line input: Shift+Enter, Meta/Alt+Enter, or `\` then Enter for newline; plain Enter submits.
clawcodex # Inline REPL (default)
clawcodex --tui # Textual TUI
clawcodex --stream # REPL with live rendering
clawcodex login # Configure API keys (interactive)
clawcodex config # Show ~/.clawcodex/config.json-backed settings
clawcodex --version # Version string
# Non-interactive / scripting (pipes, CI, agents)
clawcodex -p "Summarize src/cli.py"
clawcodex -p "Hello" --output-format json
clawcodex -p --output-format stream-json --input-format stream-json < events.ndjson
# Overrides for a single run
clawcodex --provider anthropic --model claude-sonnet-4-6 -p "Hi"
clawcodex --max-turns 10 --allowed-tools Read,Grep -p "Find TODOs"
# Permission control (REPL, TUI, and -p all honor these)
clawcodex --permission-mode plan # plan / acceptEdits / dontAsk
clawcodex --dangerously-skip-permissions -p "ls" # bypass all permission checks
clawcodex --allow-dangerously-skip-permissions # allow /permission-mode bypass later
--dangerously-skip-permissionsdisables every tool permission check for the session. Recommended only inside sandboxed containers/VMs with no internet access. The flag is refused when the process is running as root/sudo unlessIS_SANDBOX=1orCLAUDE_CODE_BUBBLEWRAP=1is set.
| Component | Status | Count |
|---|---|---|
| REPL Commands | ✅ Complete | Built-ins + /tools, /stream, /context, /compact, skills, etc. |
| Tool System | ✅ Complete | 30+ tools |
| Automated Tests | ✅ Present | Tools, agent loop, providers, parity, REPL, auth, and more |
| Documentation | ✅ Complete | Guides, i18n READMEs, FEATURE_LIST.md |
| System | Status | Description |
|---|---|---|
| CLI Entry | ✅ | clawcodex, login, config, -p / --print, --tui, --stream, --version |
| Interactive REPL | ✅ | Default inline REPL; optional Textual TUI; history, tab completion, multiline |
| Multi-Provider | ✅ | Anthropic, OpenAI, Zhipu GLM, Minimax, OpenRouter, DeepSeek — including Anthropic→OpenAI image / document block translation for vision-capable OpenAI-compat backends |
| Session Persistence | ✅ | Save/load sessions locally |
| Agent Loop | ✅ | Tool calling loop with streaming and headless mode |
| Skill System | ✅ | SKILL.md-based slash-command skills with args + tool limits |
| Cancellation / Abort | ✅ | ESC closes in-flight Bash, Grep/Glob, and streaming HTTP within ~50ms across every provider; subagents get isolated AbortControllers; Bash tool_result distinguishes timeout from ESC-abort |
| Image Handling | ✅ | TS-parity Read pipeline (magic-byte sniff, resize/compress to API limits); @image.png @-mentions inline as ImageBlock; pre-API base64 size validation in BaseProvider._prepare_messages; binary @-mentions (PDF/zip/docx/...) routed to a Read-tool hint instead of mojibake |
| Context Building | 🟡 | Workspace / git / CLAUDE.md injection; richer summaries and memory still evolving |
| Permission System | 🟡 | Framework and checks; full integration still in progress |
| MCP | 🟡 | MCP-oriented tools and wiring; full protocol/runtime polish ongoing |
| Category | Tools | Status |
|---|---|---|
| File Operations | Read, Write, Edit, Glob, Grep | ✅ Complete |
| System | Bash execution | ✅ Complete |
| Web | WebFetch, WebSearch | ✅ Complete |
| Interaction | AskUserQuestion, SendMessage | ✅ Complete |
| Task Management | TodoWrite, TaskManager, TaskStop | ✅ Complete |
| Agent Tools | Agent, Brief, Team | ✅ Complete |
| Configuration | Config, PlanMode, Cron | ✅ Complete |
| MCP | MCP tools and resources | 🟡 Tools wired; full client/runtime still evolving |
| Others | LSP, Worktree, Skill, ToolSearch | ✅ Complete |
- ✅ Phase 0: Installable, runnable CLI
- ✅ Phase 1: Core Claude Code MVP experience
- ✅ Phase 2: Real tool calling loop
- 🟡 Phase 3: Context depth, permission integration,
/resume-class recovery (in progress) - 🟡 Phase 4: MCP runtime depth, plugins, extensibility (tools exist; platform work continues)
- ⏳ Phase 5: Python-native differentiators
See FEATURE_LIST.md for detailed feature status and PR guidelines.
git clone https://github.com/agentforce314/clawcodex.git
cd clawcodex
# Create venv (uv recommended)
uv venv --python 3.11
source .venv/bin/activate
# Install package + entry point (recommended)
uv pip install -e ".[dev]"
# Alternative: requirements only, then editable install
# uv pip install -r requirements.txt && uv pip install -e .clawcodex login
# or: python -m src.cli loginThis flow will:
- ask you to choose a provider: anthropic / openai / glm / minimax / openrouter / deepseek
- ask for that provider's API key
- optionally save a custom base URL
- optionally save a default model
- set the selected provider as default
The configuration file is saved in in ~/.clawcodex/config.json. Example structure:
{
"default_provider": "anthropic",
"providers": {
"anthropic": {
"api_key": "your-api-key",
"base_url": "https://api.anthropic.com",
"default_model": "claude-sonnet-4-6"
},
"openai": {
"api_key": "your-api-key",
"base_url": "https://api.openai.com/v1",
"default_model": "gpt-5.4"
},
"glm": {
"api_key": "your-api-key",
"base_url": "https://open.bigmodel.cn/api/paas/v4",
"default_model": "zai/glm-5"
},
"minimax": {
"api_key": "your-api-key",
"base_url": "https://api.minimaxi.com/anthropic",
"default_model": "MiniMax-M2.7"
},
"openrouter": {
"api_key": "your-api-key",
"base_url": "https://openrouter.ai/api/v1",
"default_model": "deepseek/deepseek-v4-pro"
},
"deepseek": {
"api_key": "your-api-key",
"base_url": "https://api.deepseek.com",
"default_model": "deepseek-v4-pro"
}
},
"session": {
"auto_save": true,
"max_history": 100
},
"settings": {
"advisor_model": "claude-sonnet-4-6",
"advisor_client_mode": false,
"advisor_provider": "openai"
},
"env": {
"TAVILY_API_KEY": "tvly-YOUR-TAVILY-API-KEY"
}
}session— REPL session persistence:auto_savewrites each session automatically;max_historycaps retained turns.settings— the advisor model used for background helpers (advisor_provider/advisor_model, andadvisor_client_modeto route via the client).env— secrets and environment values injected at startup (e.g.TAVILY_API_KEYfor web search). Managed viaclawcodex config; keys here are exported into the process environment without overriding anything you already set in your shell.
clawcodex # Start inline REPL (same as python -m src.cli)
clawcodex --help # All flags: --tui, -p, --provider, --model, …That's it! Configure keys, then run the CLI or REPL.
| Command | Description |
|---|---|
/ |
Show commands and skills |
/help |
Help text |
/tools |
List tool names from the registry |
/tool <name> <json> |
Run a tool directly with JSON input |
/stream |
Toggle streaming: /stream on, off, or toggle |
/render-last |
Re-render last assistant reply as Markdown |
/save / /load <id> |
Persist or restore a session |
/clear |
Clear conversation (also /reset, /new) |
/tui |
Switch to the Textual TUI |
/skill |
Skill launcher flow |
/context |
Workspace / prompt context (when available) |
/compact |
Compact or clear conversation (fallback clears if compact unavailable) |
/exit, /quit, /q |
Exit |
Skills are markdown-based slash commands stored under .clawcodex/skills. Each skill lives in its own directory and must be named SKILL.md.
1) Create a project skill
Create:
<project-root>/.clawcodex/skills/<skill-name>/SKILL.md
Example:
---
description: Explains code with diagrams and analogies
when_to_use: Use when explaining how code works
allowed-tools:
- Read
- Grep
- Glob
arguments: [path]
---
Explain the code in $path. Start with an analogy, then draw a diagram.2) Use it in the REPL
❯ /
❯ /<skill-name> <args>
Example:
❯ /explain-code qsort.py
Notes
- User-level skills:
~/.clawcodex/skills/<skill-name>/SKILL.md - Tool limits:
allowed-toolscontrols which tools the skill can use. - Arguments: use
$ARGUMENTS,$0,$1, or named args like$path(fromarguments). - Placeholder syntax: use
$path, not${path}.
Every app under demos/ was generated end-to-end by ClawCodex itself — same CLI you just installed, same agent loop, same tools. No hand-edits 🙂
| Demo | Stack | Description |
|---|---|---|
demos/crm-app |
React 18 + Vite + Vitest | Mini CRM with contacts, deals, dashboard, and a full test suite |
demos/linkedin-app |
React 18 + Vite + React Router | LinkedIn-style feed: profile, network, jobs, messaging |
demos/minecraft-app |
React + three.js + @react-three/fiber | Browser voxel sandbox with terrain, mining, HUD, and player controls |
cd demos/crm-app # or linkedin-app / minecraft-app
npm install
npm run dev # vite dev serverWant to see how it's done? Open ClawCodex in any empty directory and ask it to build something — these three were generated exactly that way.
- Not a clone — Ported from actual TypeScript implementation
- Architectural fidelity — Maintains proven design patterns
- Improvements — Better error handling, more tests, cleaner code
- Type hints — Full type annotations
- Modern Python — Uses 3.10+ features
- Idiomatic — Clean, Pythonic code
- 3-step setup — Clone, configure (
clawcodex login), run (clawcodex) - Interactive config — Provider, base URL, and default model in one flow
- Inline or TUI — Default terminal-native REPL; opt-in Textual UI
- Scriptable —
-p/ JSON / NDJSON for automation - Session persistence — Save and reload conversations
For the six core abstractions (query loop, tools, tasks, two-tier state,
memory, hooks) and the golden path from user input to model output,
see docs/ARCHITECTURE.md. It is the recommended
starting point for new contributors.
The reference for the original Claude Code architecture is at
claude-code-from-source/book/ch01-architecture.md; the
chapter-by-chapter port gap analyses and refactoring plans live under
my-docs/.
clawcodex/
├── src/
│ ├── cli.py # CLI entry (console: clawcodex)
│ ├── entrypoints/ # Headless (-p) and TUI bootstraps
│ ├── repl/ # Inline REPL (prompt_toolkit + Rich)
│ ├── tui/ # Textual UI (--tui, /tui)
│ ├── providers/ # Anthropic, OpenAI, GLM, Minimax, OpenRouter, DeepSeek
│ ├── agent/ # Conversation, session, prompts
│ ├── tool_system/ # Agent loop, tools, schemas
│ ├── skills/ # SKILL.md loading and skill tool
│ ├── services/ # MCP, compact, IDE bridge, tool execution, …
│ ├── context_system/ # Workspace / git / CLAUDE.md context
│ ├── permissions/ # Permission modes and bash parsing
│ ├── hooks/ # Hook types and execution helpers
│ └── command_system/ # Slash commands and substitution
├── typescript/ # Reference / parity source (not required to run Python CLI)
├── tests/ # pytest suites
├── docs/ # Guides, i18n READMEs, refactor notes
├── .clawcodex/skills/ # Project-local skills (optional)
├── FEATURE_LIST.md # Capability matrix and roadmap
└── pyproject.toml # Package metadata and clawcodex script
We welcome contributions!
# Quick dev setup
pip install -e .[dev]
python -m pytest tests/ -vSee CONTRIBUTING.md for guidelines.
- SETUP_GUIDE.md — Detailed installation
- CONTRIBUTING.md — Development guide
- TESTING.md — Testing guide
- CHANGELOG.md — Version history
- Startup: < 1 second
- Memory: < 50MB
- Response: Turn-based assistant output with Rich markdown rendering
✅ Basic Local Safety Practices
- No sensitive data in Git
- API keys obfuscated in config
.envfiles ignored- Safe for local development workflows
MIT License — See LICENSE
- Based on Claude Code TypeScript source
- Independent educational project
- Not affiliated with Anthropic
If you find this useful, please star ⭐ the repo!
Made with ❤️ by ClawCodex Team

