Loops - Atako

Let your agents manage contacts and contact properties, send events that trigger workflows, and send transactional emails via the Loops API.

Connection

Authentication: API key.

Sign in at app.loops.so → Settings → API → Generate key. Copy the key.See Loops’s documentation.

Read actions (5)

Action	Description
`find_contact`	Find a contact by email or userId (exactly one of the two).
`list_contact_properties`	List contact properties: “all” (default) or only “custom” ones.
`list_mailing_lists`	List mailing lists (id, name, description, isPublic).
`list_transactional_emails`	List transactional emails, most recent first (ids for send_transactional_email). Paginate with cursor = pagination.nextCursor.
`test_api_key`	Check the API key and return the team it belongs to.

Write actions (5)

Action	Description
`create_contact`	Create a contact. Args: email (string, required); firstName, lastName, source, userGroup, userId (strings); subscribed (boolean); mailingLists (object { mailingListId: boolean }, ids from list_mailing_lists); properties (object of custom property name → string \| number \| boolean, names from list_contact_properties).
`create_contact_property`	Create a custom contact property. Args: name (string, camelCase, e.g. “planName”); type (one of “string”, “number”, “boolean”, “date”).
`send_event`	Send an event to trigger workflows for a contact. Args: eventName (string, required); email or userId (string, at least one); eventProperties (object of string \| number \| boolean values, available in the emails sent); mailingLists (object { mailingListId: boolean }); contactProperties (object of contact property name → string \| number \| boolean, updated on the contact); idempotencyKey (string, max 100 chars, avoids duplicates).
`send_transactional_email`	Send a transactional email from a published template. Args: transactionalId (string, required, from list_transactional_emails); email (string, required, recipient); addToAudience (boolean, creates the contact if missing); dataVariables (object of template variable name → string \| number, or array for array blocks); idempotencyKey (string, max 100 chars, avoids duplicate sends). Attachments are not supported.
`update_contact`	Update a contact by email or userId (at least one; creates the contact if none matches). To change an email, pass userId plus the new email. Args: email, userId (strings); firstName, lastName, source, userGroup (strings); subscribed (boolean — omit unless (un)subscribing); mailingLists (object { mailingListId: boolean }); properties (object of custom property name → string \| number \| boolean).

Permissions

Every action above must be explicitly granted to an agent before it can be used. See Permissions for the grant model and Security for how credentials are protected.

Last reviewed against the provider API: September 2026.