illusion-code 0.1.1

Open-source Python port of Claude Code - an AI-powered CLI coding assistant

IllusionCode

AI-Powered Command-Line Programming Assistant

The best of many worlds, unified into one intelligent coding tool

中文版 | English

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📖 Introduction

IllusionCode is an open-source AI-powered command-line programming assistant that brings together the best ideas from many projects and adds its own innovations. It inherits Claude Code's complete prompt system and tool architecture, draws inspiration from OpenHarness's Python architecture design, uses the same Cron task scheduling architecture as OpenClaw, and implements flexible proxy routing through cc-switch. On this foundation, IllusionCode provides deep Windows optimization, full bilingual (Chinese/English) interface support, more comprehensive Markdown terminal rendering than comparable projects, and a browser-based Web UI for a modern chat experience.

Core Features

• 🌐 Web UI Interface - Browser-based chat interface with illusion web, featuring warm color design, session management, and real-time streaming (supplementary to the recommended terminal interface)
• 🪟 Deep Windows Optimization - Auto-detect Git, PowerShell support, path compatibility optimization
• 🖥️ Zero Terminal Flicker - Stable rendering based on Ink Static component, suppressing resize event interference
• 🌍 Bilingual Interface - All CLI output automatically switches between Chinese and English based on ui_language setting
• 📝 Comprehensive Markdown Rendering - Box-drawing tables, rounded card-style code blocks, multi-color rich text, links and more
• 📂 Project-Level Config Friendly - Auto-generate skills, rules, mcp, plugins directories, project-level skills override global ones
• 🤖 Multi AI Provider Support - Anthropic Claude, OpenAI, GitHub Copilot, OpenAI Codex, and any OpenAI-compatible endpoint
• 🛠️ Rich Toolset - 34 built-in tools + MCP dynamic tool extension
• ⌨️ 47 Slash Commands - Covering session management, configuration, project operations, task scheduling, etc.
• 🧠 Multi-Agent Collaboration - 7 built-in specialized Agents, supporting task orchestration
• 🔌 Flexible Extension System - Plugins, hooks, skills, MCP servers
• 🔐 Comprehensive Permission Control - Three modes + fine-grained rules + Always Allow one-click approval
• 💾 Memory & Context - Project knowledge persistence and dynamic retrieval
• 🎨 Dual Interface - Modern React + Ink terminal TUI + browser-based Web UI
• 🎯 Reasoning Effort Control - Supports low/medium/high/xhigh/max five reasoning effort levels with automatic fallback

Interface Preview

Welcome screen & rich text rendering

Demo video

📺 Watch demo on YouTube

Design Origins & Innovations

Inherited from Claude Code: Complete injection of Claude Code's system prompts, tool definitions, permission model, and multi-agent coordination architecture, ensuring behavioral consistency.

Inspired by OpenHarness: Python architecture design references OpenHarness's ideas.

Cron Architecture Aligned with OpenClaw: The scheduled task system uses the same scheduler architecture as OpenClaw, supporting independent session execution, execution history tracking, and consecutive error monitoring.

cc-switch Proxy Routing: Local proxy routing through the cc-switch reverse proxy tool, supporting request forwarding to different AI providers.

Deep Windows Optimization: Auto-detect Git installation path, unified PowerShell and Bash tool processing, automatic path separator compatibility, out-of-the-box experience for Windows users.

Zero Terminal Flicker: Uses Ink <Static> component architecture, static rendering for completed messages, dynamic rendering for streaming messages, completely solving terminal flicker issues.

Bilingual Interface: All CLI output (auth, mcp, plugin, cron, session, etc.) automatically switches language via the i18n system based on the ui_language field. Language preference can be selected on first run.

Comprehensive Markdown Rendering: Full rendering of box-drawing tables, rounded card-style code blocks, multi-color rich text (bold, italic, inline code, links), significantly improving AI response readability.

Project-Level Config Automation: Auto-generate <project>/.illusion/rules/ and <project>/.illusion/skills/ directories, project-level configuration takes precedence over global configuration, facilitating team collaboration.

Web UI Interface: Browser-based chat interface powered by React + Vite + Tailwind CSS frontend and FastAPI + WebSocket backend. Features warm color design, session management, sidebar navigation, real-time streaming responses, right panel with context usage display, and full i18n support. Launch with illusion web. Note: The terminal interface is recommended as the primary mode for full feature support and better performance; the Web UI is intended as a supplementary option for scenarios where a terminal is unavailable.

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🚀 Quick Start

Requirements

• Python >= 3.10
• Node.js (for frontend TUI)
• Supports Windows, macOS, Linux
• Windows users: Auto-detect Git, no manual PATH configuration needed

Installation

Recommended: pip install from PyPI

The simplest way to install IllusionCode. Automatically installs both frontends and registers the illusion command globally.

pip install illusion-code

No git clone or Node.js required — everything is included in the package.

Alternative: pip install from source

Clone the repository and install locally. Triggers the hatch build hook to build frontends automatically.

git clone https://github.com/YunTaiHua/illusion-code.git
cd illusion-code
pip install .

Requires Node.js 18+ (for frontend build).

Alternative: uv sync (for development)

uv sync creates an editable install within the project directory. It does not trigger the hatch build hook, so you must build frontends manually. This is recommended for developers who want to modify the source code.

git clone https://github.com/your-repo/illusion-code.git
cd illusion-code
uv sync

# Build frontends manually (required after uv sync)
python scripts/build_frontend.py              # Build both
python scripts/build_frontend.py --terminal   # Terminal TUI only
python scripts/build_frontend.py --web        # Web UI only

Note: uv sync does NOT register illusion globally. To use it:

# Option 1: Use uv run from the project directory
cd illusion-code
uv run illusion

# Option 2: Activate the virtual environment
# Windows
.venv\Scripts\activate
# macOS / Linux
source .venv/bin/activate
illusion

# Option 3: Install globally with pip (recommended)
pip install .

Manual frontend build (for source installs only)

If you installed from source and need to rebuild frontends (e.g., after updating frontend code). PyPI users do not need this step.

Build script (recommended)

Build script (recommended)

python scripts/build_frontend.py              # Build both
python scripts/build_frontend.py --terminal   # Terminal TUI only
python scripts/build_frontend.py --web        # Web UI only

npm directly

# Terminal TUI (esbuild → dist/index.mjs)
cd frontend/terminal
npm install --no-fund --no-audit
npm run build
cd ../..

# Web UI (Vite → dist/)
cd frontend/web
npm install --no-fund --no-audit
npm run build
cd ../..

Key differences

	pip install illusion-code	pip install .	uv sync
Source	PyPI	Local git clone	Local git clone
Frontend build	Pre-built (included)	Automatic (hatch hook)	Manual
Node.js required	No	Yes (18+)	Yes (18+)
illusion command	Global	Global	Project-only (via uv run or venv activation)
Install type	Standard	Standard	Editable
Best for	End users	Contributors	Developers

Basic Usage

First-time setup: Run illusion auth login first to configure your API credentials. Without authentication (or if the model is unavailable), the program may exit with an error code.

# First-time: configure authentication
illusion auth login

# Start interactive session (recommended)
illusion

# Launch Web UI in browser
illusion web

# Web UI with custom port
illusion web --port 8080

# Non-interactive print mode
illusion -p "Analyze the structure of this project"

# Specify model
illusion -m env_1.model_2

# Continue most recent session
illusion --continue

# Restore specific session
illusion --resume <session-id>

# Set permission mode
illusion --permission-mode full_auto

# Specify API format
illusion --api-format openai

Note: The terminal interface (illusion) is the recommended primary mode. The Web UI (illusion web) is a supplementary option for scenarios where a terminal is unavailable.

---

📚 Command System

Subcommands

# Web UI
illusion web                     # Launch Web UI in browser (default port 3000)
illusion web --port 8080         # Launch with custom port

# Authentication management
illusion auth login              # Interactive provider setup (Custom/Anthropic/OpenAI/Copilot/Codex)
illusion auth status             # View credential status for all environments
illusion auth logout [env_N]     # Clear environment credentials
illusion auth switch [env_N]     # Switch active environment
illusion auth add-model <env_N> <model_name>  # Add a model to an existing environment

# MCP management
illusion mcp list                # List MCP servers
illusion mcp add <name> <config> # Add server
illusion mcp remove <name>       # Remove server

# Plugin management
illusion plugin list             # List plugins
illusion plugin install <source> # Install plugin
illusion plugin uninstall <name> # Uninstall plugin

# Scheduled tasks
illusion cron start              # Start scheduler
illusion cron stop               # Stop scheduler
illusion cron status             # View status
illusion cron list               # List tasks
illusion cron toggle <name> <true|false>  # Enable/disable task
illusion cron run <name>         # Manually trigger task
illusion cron history            # View execution history
illusion cron logs               # View scheduler logs

Interactive Slash Commands

In interactive sessions, you can use the following commands:

Category	Command Examples	Description
Session Management	/help, /clear, /exit, /rewind, /delete	Manage session state
Memory Snapshots	/memory, /resume, /export, /rules	Memory and session management
Configuration	/config, /model, /permissions, /plan, /thinking	Adjust runtime configuration
Plugin Extensions	/skills, /hooks, /mcp, /plugin	Manage extension features
Project Git	/init, /diff, /branch, /commit	Project and version control
Multi-Agent	/continue	Agent collaboration

---

🏗️ Project Architecture

illusion-code/
├── src/illusion/           # Main source code
│   ├── api/                # API clients (Anthropic, OpenAI, etc.)
│   ├── auth/               # Authentication management
│   ├── commands/           # Slash command system (47 commands)
│   ├── config/             # Configuration system
│   ├── coordinator/        # Multi-agent coordinator
│   ├── engine/             # Core conversation engine
│   ├── hooks/              # Hook system
│   ├── mcp/                # MCP client
│   ├── memory/             # Memory system
│   ├── permissions/        # Permission system
│   ├── plugins/            # Plugin system
│   ├── prompts/            # Prompt system
│   ├── skills/             # Skill system
│   ├── tasks/              # Task management
│   ├── tools/              # Toolset (34 base tools)
│   ├── ui/                 # User interface
│   │   ├── web/            # Web backend (FastAPI + WebSocket)
│   │   └── ...
│   └── cli.py              # CLI entry point
├── frontend/
│   ├── terminal/           # React Ink TUI frontend
│   └── web/                # React Web frontend (Vite + Tailwind)
├── tests/                  # Test suite
└── pyproject.toml          # Project configuration

---

🔧 Core Modules

API Client Layer

Supports multiple AI providers:

Provider	API Format	Authentication
Anthropic Claude	anthropic	API Key
OpenAI / Compatible	openai	API Key
GitHub Copilot	openai	OAuth Device Flow
OpenAI Codex	openai	External CLI (Codex CLI)
Custom Provider	anthropic / openai	API Key

Tool System

Provides 34 core tools, covering:

• File Operations: file_read, file_write, file_edit, notebook_edit
• Command Execution: bash, powershell, repl
• Search: glob, grep, web_fetch, web_search, tool_search
• Task Management: task_create, task_get, task_list, task_update, task_output, task_stop
• Agent Collaboration: agent, send_message, team_create, team_delete
• Mode Switching: enter_plan_mode, exit_plan_mode
• Session Control: enter_worktree, exit_worktree, todo_write, sleep
• Config & Debug: config, lsp, mcp_auth, skill, structured_output
• Interaction: ask_user_question
• Scheduled Tasks: cron (unified tool with status/list/add/update/remove/run actions)

Permission System

Three permission modes:

Mode	Description
default	Modification tools require user confirmation
plan	Block all modification tools
full_auto	Allow all operations

Multi-Agent Coordinator

Built-in 7 specialized Agents:

Agent	Purpose
general-purpose	General research and multi-step tasks
Explore	File search and code exploration expert
Plan	Architecture design and implementation planning expert
verification	Adversarial verification expert
worker	Implementation-oriented Worker
statusline-setup	Shell PS1 converter
illusion-guide	Illusion Code / SDK / API documentation expert

---

🎨 Frontend Tech Stack

Terminal TUI (Ink)

Technology	Version	Purpose
React	18.3.1	UI framework
Ink	5.1.0	Terminal UI component library
TypeScript	5.7.3	Type safety

Web UI

Technology	Version	Purpose
React	18.x	UI framework
Vite	6.x	Build tool and dev server
Tailwind CSS	3.x	Utility-first CSS framework
TypeScript	5.x	Type safety
FastAPI	-	Backend API framework
WebSocket	-	Real-time bidirectional communication

---

📦 Main Dependencies

Dependency	Purpose
anthropic	Anthropic SDK
openai	OpenAI SDK
rich	Rich text output
prompt-toolkit	Advanced input processing
textual	TUI framework
typer	CLI framework
pydantic	Data validation
httpx	HTTP client
mcp	MCP protocol
fastapi	Web backend API framework
uvicorn	ASGI server for Web backend

---

⚙️ Configuration Files

Configuration Overview

File	Location	Scope	Purpose
settings.json	~/.illusion/settings.json	Global	Main settings file, API config, permissions, hooks, etc.
credentials.json	~/.illusion/credentials.json	Global	Secure credential storage (API keys, etc.)
CLAUDE.md	Project root	Project-level	Project instructions and context
MEMORY.md	Project root	Project-level	Memory entry file
.illusion/mcp/*.json	Project root	Project-level	MCP server configuration
.illusion/rules/*.md	Project root	Project-level	Project rule files

Credentials File (credentials.json)

The credentials file is located at ~/.illusion/credentials.json for secure API key storage. It is automatically managed by the illusion auth login command, but can also be edited manually. Credentials are stored by env_N groups, corresponding to the environment configurations in settings.json.

{
  "env_1": {
    "api_key": "sk-ant-xxxxx"
  },
  "env_2": {
    "api_key": "sk-xxxxx"
  }
}

Field description:

• Top-level keys are environment identifiers (env_1, env_2, etc.), matching env_N in settings.json
• Each environment stores credentials like api_key
• File permissions are automatically set to 600 (see explanation below)

API Key Storage Options: API keys can be stored in two ways, choose based on your needs:

Method	Location	Advantage	Disadvantage
Secure mode	credentials.json (managed by illusion auth login)	Keys separated from config, easier management, file permissions protected	Requires extra file
Convenient mode	env_N.api_key field in settings.json	All config in one file, simple and direct	Keys in plaintext, be careful when sharing config

Both methods can be mixed. Runtime read priority: env_N.api_key > environment variables > credentials.json.

File Permission 600 Explained: 600 is a Unix/Linux file permission code meaning "only the file owner can read and write, all other users have no access." In numeric notation: rw-------, where 6 (read+write) applies to the owner, 0 to the group, and 0 to others. On Windows systems, this setting is silently skipped (Windows uses a different ACL permission model). This restriction protects API keys from being read by other users on the same system.

Configuration Priority

Configuration resolution priority (from high to low):

1. CLI Arguments - Command-line arguments have the highest priority
2. Environment Variables - Such as ANTHROPIC_API_KEY, ANTHROPIC_MODEL, etc.
3. Configuration Files - ~/.illusion/settings.json
4. Default Values - Built-in default configurations

---

Global Configuration (settings.json)

Global configuration file is located at ~/.illusion/settings.json and applies to all projects.

Configuration Methods

settings.json uses the env_N grouped format to manage multiple environment/provider configurations. Each env_N is an independent environment configuration (EnvConfig) containing API format, endpoint, API key, and model list. The model field references env_N.model_N to select the currently active model.

{
  "env_1": {
    "api_format": "anthropic",
    "base_url": null,
    "model_1": "claude-sonnet-4-6",
    "model_2": "claude-opus-4-6"
  },
  "env_2": {
    "api_format": "openai",
    "base_url": "https://api.openai.com/v1",
    "model_1": "gpt-5.4"
  },
  "model": "env_1.model_1",
  "context_window": 200000,
  "system_prompt": null
}

Tip: The model field format is env_N.model_N, used to specify which model of which environment to use. You can switch interactively via the /model command. API keys can be placed directly in env_N.api_key, or stored in credentials.json via illusion auth login (more secure).

Complete Configuration Structure

{
  "env_1": {
    "api_format": "anthropic",
    "base_url": null,
    "model_1": "claude-sonnet-4-6",
    "model_2": "claude-opus-4-6"
  },
  "env_2": {
    "api_format": "openai",
    "base_url": "https://api.openai.com/v1",
    "model_1": "gpt-5.4"
  },
  "model": "env_1.model_1",
  "context_window": 200000,
  "system_prompt": null,
  "max_tokens": 16384,
  "max_turns": 200,
  "permission": {
    "mode": "default",
    "allowed_tools": [],
    "denied_tools": [],
    "path_rules": [],
    "denied_commands": []
  },
  "hooks": {},
  "memory": {
    "enabled": true,
    "max_files": 5,
    "max_entrypoint_lines": 200
  },
  "sandbox": {
    "enabled": false,
    "fail_if_unavailable": false,
    "enabled_platforms": [],
    "network": {
      "allowed_domains": [],
      "denied_domains": []
    },
    "filesystem": {
      "allow_read": [],
      "deny_read": [],
      "allow_write": ["."],
      "deny_write": []
    }
  },
  "enabled_plugins": {},
  "mcp_servers": {},
  "ui_language": "en-US",
  "output_style": "default",
  "fast_mode": false,
  "effort": "medium",
  "passes": 1,
  "verbose": false
}

Configuration Field Description

Field	Type	Default	Description	Example
env_N	object	-	Environment config group (EnvConfig), supports dynamic env_1, env_2...	See EnvConfig field description below
model	string	"env_1.model_1"	Active model reference, format: env_N.model_N	"env_2.model_1"
context_window	int	200000	Context window size	128000
system_prompt	string|null	null	Custom system prompt (global override)	"You are a professional Python developer"
max_tokens	int	16384	Maximum output token count	32768
max_turns	int	200	Maximum conversation turns	500
ui_language	string	"en-US"	UI language	"zh-CN"
fast_mode	bool	false	Fast mode	true
effort	string	"medium"	Reasoning effort level: low/medium/high/xhigh/max	"high"
passes	int	1	Reasoning pass count (1-8), controls how many times the AI iterates on the same problem; higher values = deeper reasoning but longer time	2
verbose	bool	false	Verbose output mode	true

---

Environment Configuration (EnvConfig)

IllusionCode supports managing multiple environment/provider configurations through env_N groups. Each environment configuration (EnvConfig) corresponds to an independent API provider setup.

EnvConfig Field Description

Field	Type	Required	Description
api_format	string	Yes	API format: anthropic / openai
base_url	string|null	No	Custom API endpoint, null uses default endpoint
api_key	string	No	API key (can be filled directly, or left empty for illusion auth login to store in credentials.json)
system_prompt	string|null	No	System prompt for this environment (overrides global)
model_N	string	No	Model name, supports multiple: model_1, model_2, model_3...

Multi-Model Configuration Example

Configure multiple models under the same environment, switch via env_N.model_N:

{
  "env_1": {
    "api_format": "openai",
    "base_url": "https://integrate.api.nvidia.com/v1",
    "model_1": "stepfun-ai/step-3.5-flash",
    "model_2": "minimaxai/minimax-m2.7",
    "model_3": "meta/llama-3.1-405b-instruct"
  },
  "model": "env_1.model_1"
}

Ways to switch models:

# Method 1: Use /model command to switch interactively
/model

# Method 2: Use -m parameter to specify model
illusion -m env_1.model_2

# Method 3: Modify the model field in settings.json
# Change "model" to "env_1.model_2"

---

Provider Configuration Examples

1. Anthropic Claude API

{
  "env_1": {
    "api_format": "anthropic",
    "base_url": null,
    "model_1": "claude-sonnet-4-6",
    "model_2": "claude-opus-4-6"
  },
  "model": "env_1.model_1"
}

API key can be placed directly in env_N.api_key, or stored in credentials.json via illusion auth login (more secure).

Authentication:

• Interactive setup: illusion auth login → select Anthropic
• Environment variable: ANTHROPIC_API_KEY

---

2. OpenAI API

{
  "env_1": {
    "api_format": "openai",
    "base_url": "https://api.openai.com/v1",
    "model_1": "gpt-5.4"
  },
  "model": "env_1.model_1"
}

API key can be placed directly in env_N.api_key, or stored in credentials.json via illusion auth login (more secure).

Authentication:

• Interactive setup: illusion auth login → select OpenAI
• Environment variable: OPENAI_API_KEY

---

3. Custom Provider

After selecting "Custom provider" in illusion auth login, enter:

1. API format (openai / anthropic)
2. API endpoint
3. API key
4. Model name

{
  "env_1": {
    "api_format": "openai",
    "base_url": "https://api.your-llm.com/v1",
    "model_1": "your-model-name"
  },
  "model": "env_1.model_1"
}

---

4. GitHub Copilot

# Interactive setup
illusion auth login  # Select GitHub Copilot

After completing GitHub authorization in the browser, it configures automatically. Auth data is stored in ~/.illusion/copilot_auth.json.

{
  "env_1": {
    "api_format": "openai",
    "base_url": "https://api.githubcopilot.com",
    "model_1": "gpt-5.5",
    "provider": "copilot"
  },
  "model": "env_1.model_1"
}

Authentication: GitHub OAuth device code flow (handled automatically by illusion auth login)

Requirement: An active GitHub Copilot subscription.

Supported models: gpt-5.5, gpt-5.3-codex, claude-opus-4.6, gemini-3.1-pro-preview, etc. (depends on subscription plan)

---

5. OpenAI Codex (ChatGPT Subscription)

# First install and authenticate Codex CLI
codex auth login

# Then configure in IllusionCode
illusion auth login  # Select OpenAI Codex

Codex mode uses ChatGPT subscription authentication, reading credentials from the Codex CLI's auth file (~/.codex/auth.json).

{
  "env_1": {
    "api_format": "openai",
    "base_url": "https://chatgpt.com/backend-api",
    "model_1": "codex-mini",
    "provider": "codex"
  },
  "model": "env_1.model_1"
}

Authentication: External CLI credential binding (requires Codex CLI authentication first)

Requirement: Codex CLI installed with a ChatGPT Plus/Pro/Team subscription.

---

6. Multi-Provider Mixed Configuration

Configure multiple environments via illusion auth login, switch using illusion auth switch or /model:

{
  "env_1": {
    "api_format": "anthropic",
    "base_url": null,
    "model_1": "claude-sonnet-4-6",
    "model_2": "claude-opus-4-6"
  },
  "env_2": {
    "api_format": "openai",
    "base_url": "https://api.openai.com/v1",
    "model_1": "gpt-5.4"
  },
  "env_3": {
    "api_format": "openai",
    "base_url": "https://api.githubcopilot.com",
    "model_1": "gpt-5.5",
    "provider": "copilot"
  },
  "model": "env_1.model_1"
}

API keys can be placed directly in env_N.api_key, or stored in credentials.json (more secure, managed by illusion auth login). Copilot/Codex authentication is managed by their respective OAuth flows and does not require manual API key entry.

Switching methods:

# Interactive environment switch
illusion auth switch

# Directly specify environment
illusion auth switch env_2

# Use /model command to switch interactively
/model

# Use -m parameter to specify directly
illusion -m env_2.model_1

---

Project-Level Configuration

Project-level configuration only applies to the current project and is placed in the project root directory.

CLAUDE.md - Project Instructions

Create a CLAUDE.md file in the project root to provide project-specific context and instructions for AI:

# Project Description

This is a Python Web project using the FastAPI framework.

## Code Standards

- Use Python 3.10+ features
- Follow PEP 8 code style
- Use type hints

## Directory Structure

- src/api: API routes
- src/models: Data models
- src/services: Business logic

## Notes

- Do not modify files in the tests/ directory
- Run pytest before committing

.illusion/rules/ - Rule Files

Create .md files in the .illusion/rules/ directory, each file is an independent rule:

Project Root/
├── .illusion/
│   └── rules/
│       ├── python-style.md
│       ├── git-workflow.md
│       └── testing.md

MCP Server Configuration

MCP servers support three configuration methods, with priority from high to low: Plugin > Project-level > Global settings

1. Global Configuration (settings.json)

Configure in the mcp_servers field of ~/.illusion/settings.json, applies to all projects. Both mcp_servers (snake_case) and mcpServers (camelCase) key names are supported:

{
  "mcp_servers": {
    "solidworks": {
      "type": "stdio",
      "command": "python",
      "args": ["E:\\claudecode\\SolidWorks-MCP\\server.py"],
      "enabled": true
    }
  }
}

You can also manage via command line:

illusion mcp list                # List MCP servers
illusion mcp add <name> <config> # Add server
illusion mcp remove <name>       # Remove server

2. Project-level Configuration (.illusion/mcp/)

Create .json files in the .illusion/mcp/ directory under the project root, only applies to the current project (directory auto-generated):

Method 1: Single Server Configuration (filename as server name)

// .illusion/mcp/solidworks.json
{
  "type": "stdio",
  "command": "python",
  "args": ["E:\\claudecode\\SolidWorks-MCP\\server.py"],
  "enabled": true
}

Method 2: Multiple Server Configuration (using mcpServers key)

// .illusion/mcp/servers.json
{
  "mcpServers": {
    "filesystem": {
      "type": "stdio",
      "command": "npx",
      "args": ["-y", "@modelcontextprotocol/server-filesystem", "./data"],
      "env": {
        "NODE_OPTIONS": "--max-old-space-size=4096"
      }
    },
    "database": {
      "type": "stdio",
      "command": "python",
      "args": ["-m", "mcp_server_postgres"],
      "env": {
        "DATABASE_URL": "postgresql://localhost/mydb"
      }
    },
    "remote-api": {
      "type": "http",
      "url": "https://api.example.com/mcp",
      "headers": {
        "Authorization": "Bearer your-token"
      }
    },
    "websocket-service": {
      "type": "ws",
      "url": "wss://ws.example.com/mcp",
      "headers": {}
    }
  }
}

3. Plugin Configuration

Place .mcp.json or mcp.json files in the plugin directory, loaded automatically with the plugin:

~/.illusion/plugins/my-plugin/
├── plugin.json      # Plugin manifest
├── .mcp.json        # MCP config (or mcp.json)
└── ...

MCP servers from plugins are registered with the format plugin_name:server_name to avoid conflicts with other configurations.

MCP Server Configuration Types

Type	Fields	Description
stdio	command, args, env, cwd, log_file, enabled	Communication via standard input/output
http	url, headers, enabled	Communication via HTTP protocol
ws	url, headers, enabled	Communication via WebSocket protocol

enabled field: All MCP server types support the enabled field (defaults to true). Set to false to disable a single server without removing its configuration. Both mcpServers and mcp_servers key names are supported in project-level config files.

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Permission Configuration

Permission Modes

Mode	Value	Description
Default Mode	default	Modification tools require user confirmation
Plan Mode	plan	Block all modification tools
Full Auto Mode	full_auto	Allow all operations

Permission Configuration Example

{
  "permission": {
    "mode": "default",
    "allowed_tools": ["read_file", "grep", "glob"],
    "denied_tools": ["bash"],
    "path_rules": [
      {"pattern": "src/**", "allow": true},
      {"pattern": "secrets/**", "allow": false}
    ],
    "denied_commands": ["/init", "/commit"]
  }
}

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Hook Configuration

Hooks allow executing custom operations when specific events occur.

Supported Hook Types

Hook Event	Description
PRE_TOOL_USE	Before tool execution
POST_TOOL_USE	After tool execution
USER_PROMPT_SUBMIT	After user prompt submission

Hook Configuration Example

{
  "hooks": {
    "PRE_TOOL_USE": [
      {
        "type": "command",
        "command": "echo 'Tool: $TOOL_NAME' >> /tmp/tool.log",
        "timeout_seconds": 30,
        "block_on_failure": false
      }
    ],
    "POST_TOOL_USE": [
      {
        "type": "http",
        "url": "https://hooks.example.com/tool-complete",
        "headers": {"Authorization": "Bearer token"},
        "timeout_seconds": 10
      }
    ],
    "USER_PROMPT_SUBMIT": [
      {
        "type": "prompt",
        "prompt": "Check if user input contains sensitive information",
        "block_on_failure": true
      }
    ]
  }
}

Hook Type Details

Type	Required Fields	Optional Fields	Description
command	command	timeout_seconds, matcher, block_on_failure	Execute Shell command
prompt	prompt	model, timeout_seconds, matcher, block_on_failure	Use LLM for verification
http	url	headers, timeout_seconds, matcher, block_on_failure	Send HTTP request
agent	prompt	model, timeout_seconds, matcher, block_on_failure	Use Agent for verification

---

Environment Variables

Supported environment variables:

Variable Name	Description
ANTHROPIC_API_KEY	Anthropic API key
OPENAI_API_KEY	OpenAI API key
ANTHROPIC_MODEL	Default model
ANTHROPIC_BASE_URL	API endpoint
ILLUSION_MAX_TOKENS	Maximum token count
ILLUSION_MAX_TURNS	Maximum conversation turns
ILLUSION_SANDBOX_ENABLED	Whether to enable sandbox
ILLUSION_CONFIG_DIR	Configuration directory path
ILLUSION_DATA_DIR	Data directory path
ILLUSION_LOGS_DIR	Logs directory path

---

Memory System Configuration

{
  "memory": {
    "enabled": true,
    "max_files": 5,
    "max_entrypoint_lines": 200
  }
}

Field	Default	Description
enabled	true	Whether to enable memory function
max_files	5	Maximum number of memory files
max_entrypoint_lines	200	Maximum lines for entry file

---

Sandbox Configuration

{
  "sandbox": {
    "enabled": true,
    "fail_if_unavailable": false,
    "enabled_platforms": ["linux", "darwin"],
    "network": {
      "allowed_domains": ["api.anthropic.com"],
      "denied_domains": ["internal.company.com"]
    },
    "filesystem": {
      "allow_read": ["./src", "./docs"],
      "deny_read": ["./secrets"],
      "allow_write": ["./output"],
      "deny_write": ["./.git"]
    }
  }
}

---

🔌 Extension Development

Hook System

Supports multiple hook types:

• PRE_TOOL_USE - Before tool execution
• POST_TOOL_USE - After tool execution
• USER_PROMPT_SUBMIT - After user prompt submission

Plugin System

Defined through plugin.json manifest:

• Skills
• Commands
• Hooks
• MCP Servers

🧪 Development & Testing

# Install development dependencies
uv sync --dev

# Run tests
pytest

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📄 License

This project is open-sourced under the MIT license.

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🤝 Contributing

Welcome to submit Issues and Pull Requests!

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