daimyo 1.19.1

Rules server for agents with REST and MCP interfaces

Daimyo - Rules Server for Agents

Daimyo (大名) is an extensible Python server providing rules to AI agents through REST and MCP interfaces. Supports scope-based rules with inheritance, categories for filtering, and server federation for distributed rule management.

Features

• Multiple Interfaces: REST API, MCP (Model Context Protocol), and CLI
• Scope Inheritance: Single and multiple parent inheritance with priority-based conflict resolution
• Rule Types: Commandments (MUST) and Suggestions (SHOULD)
• Categories: Organize rules into hierarchical categories for selective retrieval
• Server Federation: Distribute scopes across multiple servers with automatic merging
• Multiple Formats: Output as YAML, JSON, or Markdown
• Clean Architecture: Domain-driven design with clear separation of concerns
• Templating System: Rules can use Jinja2 templates to be defined as generic rules that change their form depending on the context
• Extensibility via Plugins: Plugins can extend the features of daimyo instances
• Configurable Markdown Formatting: Prologues/epilogues, XML tag wrapping, and aggregated display modes

Installation

pip install daimyo

Or install from source:

git clone https://gitlab.com/Kencho1/daimyo.git
cd daimyo
pip install -e .

Quick Start

1. Set Up Your Rules

mkdir -p .daimyo
cp -r example-daimyo-rules .daimyo/rules

2. Start the Server

daimyo serve

3. Access the API

Visit http://localhost:8000/docs for interactive API documentation.

curl http://localhost:8000/api/v1/scopes/python-general/rules

Core Concepts

Rules are organized into scopes (e.g. company, team, project), each containing commandments (MUST) and suggestions (SHOULD). Scopes can inherit from parent scopes and organize rules into hierarchical categories for selective retrieval. Multiple servers can be federated to distribute scopes across deployments.

Documentation

Full documentation is available at https://daimyo.readthedocs.io/en/latest, including:

• Configuration reference
• REST API & MCP usage
• Scope and category design best practices
• Advanced topics (federation, templates, sharding)
• Plugin system
• CLI reference

Development

Running Tests

pip install -e ".[test]"
pytest

Code Quality

mypy daimyo
ruff check daimyo
ruff format daimyo

License

MIT