Metaschema Framework Claude Plugins

Claude Code plugins for working with Metaschema and OSCAL (Open Security Controls Assessment Language).

Available Plugins

Plugin	Description
metaschema	Skills and agents for understanding Metaschema specifications
metaschema-tools	Commands and MCP servers for metaschema-java CLI integration
oscal	Skills and agents for understanding OSCAL security models
oscal-tools	Commands and MCP servers for oscal-cli integration

Installation

Add the Marketplace

claude plugin install gh:metaschema-framework/claude-plugins

Install Plugins

Install the plugins you need:

# Metaschema plugins
claude plugin install metaschema-framework:metaschema
claude plugin install metaschema-framework:metaschema-tools

# OSCAL plugins
claude plugin install metaschema-framework:oscal
claude plugin install metaschema-framework:oscal-tools

Verify Installation

claude plugin list

Plugin Details

metaschema

Knowledge plugin providing Claude with deep understanding of Metaschema:

• Skills: Metaschema syntax, constraints, datatypes, module composition
• Agents: Metaschema expert for answering specification questions

metaschema-tools

Tooling plugin integrating metaschema-java:

• Commands: Schema validation, code generation
• MCP Server: Direct integration with metaschema-java CLI
• Skills: Effective use of metaschema tooling

oscal

Knowledge plugin providing Claude with deep understanding of OSCAL:

• Skills: OSCAL layers (catalog, profile, component-definition, SSP, SAP, SAR, POA&M)
• Agents: OSCAL/security compliance expert

oscal-tools

Tooling plugin integrating oscal-cli:

• Commands: OSCAL validation, profile resolution, format conversion
• MCP Server: Direct integration with oscal-cli
• Skills: Effective use of OSCAL tooling

Requirements

• Claude Code CLI
• For tools plugins:
  • metaschema-tools: metaschema-java installed
  • oscal-tools: oscal-cli installed

Contributing

See CONTRIBUTING.md for guidelines on contributing new plugins or improving existing ones.

License

This project is licensed under the Apache License 2.0 - see the LICENSE file for details.

Related Projects

• Metaschema - Information modeling framework
• metaschema-java - Java implementation
• OSCAL - Open Security Controls Assessment Language
• oscal-cli - OSCAL command-line tool