MCP Library.
Model Context Protocol servers — pre-built integrations to the apps and services your business already runs on. Each MCP gives Onyx or Pynk a tool surface to act through.
Gmail
Read, send, label, and search a Gmail inbox on behalf of an Onyx or Pynk agent. OAuth-scoped, per-account, with clear authority boundaries on what the agent is allowed to do unsupervised.
Google Calendar
calendar
Read and write a Google Calendar on behalf of an agent — book meetings, reschedule, decline, surface conflicts, and respect the operational rules that a calendar widget can't encode.
Stripe
payments
Read account state, generate payment links, send invoices, and handle subscription operations through a Stripe account on behalf of an agent. Authority surface bounded by amount and operation type.
Twilio
communications
Send and receive SMS, MMS, and voice calls through a Twilio account on behalf of an agent. Used by Onyx for after-hours response, missed-call recovery, and outbound qualification.