CRM

Vennio is an API for scheduling and booking infrastructure. It lets developers and AI agents check real availability, propose times, create bookings, handle calendar integrations, send confirmations, collect payments, and sync to CRMs.

An open-source, headless CRM built for Claude and other agents, centered on a portable .acrm file, a CLI, and versioned SQL-backed workflows for sales data, transcripts, and follow-up tasks.