AI-native ontology engine: a Rust MCP server with tools for building, validating, querying, and reasoning over RDF/OWL ontologies. In-memory Oxigraph triple store, native OWL2-DL tableaux reasoner, SHACL validation, SPARQL, versioning. Single binary, no JVM.
fabio-rovai/
open-ontologies
fabio-rovai/open-ontologiesConnectors
492
hannesrudolph/
imessage-query-fastmcp-mcp-server
An MCP server that provides safe access to your iMessage database through Model Context Protocol (MCP). This server is built with the FastMCP framework and the imessagedb library, enabling LLMs to query and analyze iMessage conversations with proper phone number validation and attachment handling.
79
sib-swiss/
sparql-llm
sib-swiss/sparql-llmConnectors
🦜✨ Chat system, MCP server, and reusable components to improve LLMs capabilities when generating SPARQL queries
123
DeHor-Labs/
mcp-fiscal-brasil
DeHor-Labs/mcp-fiscal-brasilConnectors
Servidor MCP fiscal brasileiro: CNPJ, NF-e, NFS-e, CT-e, SPED, eSocial, Simples Nacional, Reforma 2026. 44 tools, zero-cadastro, tabelas offline. Python.
296

jwadow/mcp-excelConnectors
MCP server for AI agents to analyze Excel spreadsheets through atomic operations. Like SQL for Excel. Fast, accurate, and efficient. No context overflow.
46