Loops
Email platform for software companies, with campaigns, event-triggered workflows and transactional email.
Updated Sep 27, 2026
Overview
Loops is an email platform for software companies: marketing campaigns, workflows that start when an event arrives or a contact changes, and transactional email, all sent from one product.
The MCP server exposes four generic tools: search finds a Loops API
operation, describe shows its request shape, execute runs it for a team,
and teams lists the teams you can reach. It signs in with OAuth, so the
client must support Client ID Metadata Documents or be preregistered with
Loops. The loops CLI and the REST API take an API key. The API allows 10
requests per second per team, and 60 per minute on the content endpoints,
campaigns included.
Workflows
Workflows that use Loops's tools.
Tools
What agents can reach at Loops.
Create an audience segmentSaves a named segment of the contacts that match an audience filter, for targeting campaigns and filtering workflows.
- Create a campaign
Creates a draft marketing campaign with an empty email message, optionally aimed at a mailing list, segment or filter and scheduled.
- Send an event
Sends a named event for a contact, found by email address or user ID, to start the workflows it triggers, and creates the contact if it doesn't exist.
- Send a transactional email
Sends a published transactional email to one recipient, filled with the data variables you pass.
- Create or update a contact
Updates the contact with a matching email address or user ID, or creates it, with properties and mailing list subscriptions.