OneSignal is a customer engagement platform that lets you send targeted push notifications, emails, SMS, and in-app messages, manage audiences, and track campaign performance. With the OneSignal MCP, manage your messaging directly from your AI assistant. Send push notifications, emails, and SMS by simply describing your audience and message. Check campaign delivery stats, build audience segments, manage templates, and handle user subscriptions all through conversation.

Unified MCP server for OneSource — 27 tools for blockchain data

MCP server for onesub — AI tools for setting up in-app subscriptions in React Native / Expo apps

Job descriptions, skills, education requirements, and wage data

One MCP for devs incl Brave,Google,Tavily,Context7,AWS,Excalidraw,DB,GitHub,DevTools,Playwright

OneUptime MCP Server

Remote MCP server for parsing FIX messages into UFO, FFE, and sequence outputs.

OnionClaw™ — OpenClaw skill for full Tor dark web access: search .onion sites, fetch hidden services, rotate identity, run OSINT pipeline, craw.

MCP server that exposes the Online Cyber Tools catalogue (https://onlinecybertools.com) to AI agents as native MCP tools.

unofficial Yahoo Finance API MCP Server - A Model Context Protocol server implementation for Yahoo Finance API

Enables network management and control for ONOS by providing comprehensive REST API access to network topology, device configuration, flow management, and system diagnostics for software-defined networking research and prototyping.

MCP server exposing Onot workspaces, pages and blocks to AI agents.

MCP server for Redmine

Connect Claude, Cursor, ChatGPT, Gemini, and Copilot to Onplana. 29 tools, OAuth + PAT auth.

Relay MCP server for local AI coding tools

MCP server for Onshape

UK Office for National Statistics dataset catalogue + Beta JSON API

On This Day MCP — wraps byabbe.se/on-this-day (free, no auth)

Clean Markdown and AI-readability scoring for any URL. Built for AI agents.

Index your codebase's domain knowledge. 20x fewer tokens, 10x faster.

AI predictions on psychedelic medicine regulation. 8-agent swarm, 460+ daily signals, free API.

Author, validate, debug, and explain OPA Rego policies through any MCP-compatible client.

A powerful GUI app and Toolkit for Claude Code - Create custom agents, manage interactive Claude Code sessions, run secure background agents, and more.

Open-source tax skills for AI — 371 skills across 134 countries. Upload to any LLM or connect via MCP. Quality-tiered Q1–Q5.