npx mcpbar@latest edit -c claude

Role-Specific Context MCP Server

A Model Context Protocol (MCP) server that defines and governs contextual boundaries based on agent roles in your system.

Overview

This MCP server enables role-based context management for AI agents, allowing you to:

• Establish clear instructions, objectives, and domain knowledge for each AI agent (Marketing Expert, Songwriter, Executive Assistant, etc.)
• Keep role-relevant memory partitioned and scoped, preventing cross-contamination between different agent roles
• Adapt tone and style dynamically (serious, witty, sarcastic) per role, with tone profiles baked into the prompt

Features

Role Management

• Create, update, and delete custom roles
• Pre-defined roles with specific expertise domains
• Role-specific system prompts and instructions
• Customizable tone profiles

Memory Management

• Role-specific memory storage
• Memory retrieval based on relevance to current query
• Time-to-live (TTL) for memories
• Memory limits per role

MCP Integration

• Exposes roles as MCP resources
• Provides tools for role management and query processing
• Offers prompts for role-based interactions

Getting Started

Prerequisites

• Node.js 18+
• OpenAI API key

Installation

# Clone the repository
git clone https://github.com/yourusername/role-context-mcp.git
cd role-context-mcp

# Install dependencies
npm install

# Set up environment variables
echo "OPENAI_API_KEY=your_api_key_here" > .env

# Build the project
npm run build

Running the Server

# Run the MCP server
npm start

# Run the HTTP server for testing
npm run start:http

Configuration

The server can be configured by modifying src/config.ts. Key configuration options include:

• Default roles and their properties
• Available tone profiles
• Memory management settings
• OpenAI model selection

MCP Integration

Resources

The server exposes the following resources:

• role://{roleId} - Information about a specific role
• role://tones - Available tone profiles

Tools

The server provides the following tools:

• process-with-role - Process a query using a specific role
• create-role - Create a new role
• update-role - Update an existing role
• delete-role - Delete a custom role
• change-role-tone - Change the tone of a role
• store-memory - Store a memory for a specific role
• clear-role-memories - Clear all memories for a role

Prompts

The server provides the following prompts:

• role-{roleId} - Use a specific role to process a request
• create-custom-role - Create a new custom role

Example Usage

Processing a Query with a Role (MCP)

// Example of using the process-with-role tool
const result = await client.executeToolRequest({
  name: 'process-with-role',
  parameters: {
    roleId: 'marketing-expert',
    query: 'How can I improve my social media engagement?',
    customInstructions: 'Focus on B2B strategies'
  }
});

Processing a Query with a Role (HTTP API)

// Example of using the HTTP API
const response = await axios.post('http://localhost:3000/process', {
  roleId: 'marketing-expert',
  query: 'How can I improve my social media engagement?',
  customInstructions: 'Focus on B2B strategies'
});

console.log(response.data.response);

Creating a Custom Role

// Example of using the create-role tool
const result = await client.executeToolRequest({
  name: 'create-role',
  parameters: {
    id: 'tech-writer',
    name: 'Technical Writer',
    description: 'Specializes in clear, concise technical documentation',
    instructions: 'Create documentation that is accessible to both technical and non-technical audiences',
    domains: ['technical-writing', 'documentation', 'tutorials'],
    tone: 'technical',
    systemPrompt: 'You are an experienced technical writer with expertise in creating clear, concise documentation for complex systems.'
  }
});

License

MIT