Vennio

Vennio is scheduling infrastructure for developers and AI agents — the API is the product. A REST API plus an MCP server with 24 tools. Your app or agent can find availability, propose meetings, book time, and handle consent without anyone touching a calendar manually. Connect Vennio to Claude, GPT, or any MCP-compatible agent and it schedules on behalf of users in real time. Mutual scheduling, consent-scoped access, full webhook support. Not Calendly with an API bolted on.