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.

The batteries-included, No-Code FinOps automation platform, with the AI you trust.

AI-powered OSINT agent & MCP server. 16 tools: email, breach, IP, WHOIS, DNS, Shodan, GitHub & more.

OpenParliament.ca MCP — civic-tech mirror of the Parliament of Canada

HTTP + stdio MCP server for open-probe (AFS v1).

Go-based project management integration for OpenProject with comprehensive CRUD operations across projects, work packages, time tracking, boards, and notifications.

A Model Context Protocol (MCP) server that provides seamless integration with OpenProject API v3.

PulseChain analytics: 28 tools — safety scores, signals, whale alerts, pair analytics, AML.

A PostgreSQL-backed job queue service with a Python SDK. Simple, reliable, and production-ready queue for background job processing.

OpenRAG is a comprehensive, single package Retrieval-Augmented Generation platform built on Langflow, Docling, and Opensearch.

The official MCP Server for the Openregister API

OpenReview MCP — ML conference submissions and reviews (API v2)

MCP server providing access to 300+ AI models via OpenRouter

Provides a unified conversation management system for OpenRouter's language models with features like token counting, context window management, and filesystem persistence across multiple AI providers.

Routing, isochrones, matrix, snap, elevation, geocode via Openrouteservice.

A Model Context Protocol (MCP) server that provides JSON-RPC functionality through OpenRPC.

OpenSail is the open-source alternative to Codex App, Claude Desktop, Cursor, and Cowork for agentic software work.

Render STL and PNG from OpenSCAD code.

A Model Context Protocol (MCP) server for OpenSCAD 3D modeling and rendering

MCP server for OpenSCAD 3D model generation, compilation, and visual inspection

Read-only MCP tools for authenticated Open Science Framework (OSF) projects and files.

OpenSea MCP — NFT marketplace data (v2 API)

Aggregates multiple search engines, academic databases, and content sources with intelligent load balancing and failover mechanisms to provide web search, research capabilities, and PDF processing with OCR support as a free alternative to paid search APIs.

MCP server for OpenSearch Knowledge Base - Search OpenSearch best practices and documentation from any AI agent