owulveryck/mcpkg
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MCPKG is a Go-based knowledge graph system using the Model Context Protocol for managing semantic triples.
MCPKG - Model Context Protocol Knowledge Graph
MCPKG is a Go implementation of a knowledge graph system that is exposed through the Model Context Protocol (MCP). It provides a simple yet powerful way to store, manage, and query semantic information in the form of subject-predicate-object triples.
Features
- Directed graph implementation for storing structured information
- Support for creating and querying semantic triples
- Persistent storage through serialization
- MCP server interface for programmatic access
- Custom URI format for graph queries
- Thread-safe implementation for concurrent use
Components
Knowledge Graph (KG)
The core data structure that:
- Stores entities as nodes
- Represents relationships as predicates (edges)
- Provides methods for inserting and querying triples
- Supports serialization and deserialization
- Ensures concurrent safety with a read-write mutex
MCP Server
An interface layer that:
- Exposes the knowledge graph as an MCP server
- Provides tools for inserting triples
- Supports graph queries via URI format
- Implements a stateless design for reliability
Usage
Inserting Information
Use the insert_triple tool with subject, predicate, and object parameters to add information to the graph.
Querying Information
Use the graph:// URI format to find relationships between entities.
Dependencies
- Go 1.24+
- github.com/mark3labs/mcp-go
- gonum.org/v1/gonum
- github.com/stretchr/testify (for testing)
License
MIT
