loops

name

loops

description

Loops is a modern email marketing and automation platform designed for developers and product-led companies, focusing on simplicity, speed, and real-time user event triggers. Read and write Loops data through One: contacts, contactproperties, transactionalemails, apikey, lists, events and more, 12 actions with real parameter documentation. Use whenever the user asks to look something up in Loops, create or update a record there, or build code against the Loops API.

Loops through One

Loops is a modern email marketing and automation platform designed for developers and product-led companies, focusing on simplicity, speed, and real-time user event triggers.

One exposes Loops through four MCP tools. The table below carries real action ids from One's knowledge base, so for a common operation you can skip search and go straight to reading the action's parameters.

How to run an action

1. Find the action in the table below, or call search_one_platform_actions with platform loops if it is not listed.
2. Call get_one_action_knowledge with the action id. Do this every time, including for actions in this table. The table gives you the id, not the parameters.
3. Call execute_one_action with parameters copied from that knowledge.

Never guess a parameter name, a body field, or an enum value. The knowledge has the real schema, and a guessed field is either a 400 or a silent write of the wrong thing.

Before you start

Call list_one_integrations once and confirm Loops is connected. If it is missing, the user has not connected it: say so and point them at https://app.withone.ai rather than reaching for raw HTTP.

Each connection carries an access field. If it reports {"policy": "methods", "methods": ["GET"]} the agent is read-only here, so plan a read-only answer instead of attempting a write that will be refused.

Before a write

Creates, updates, deletes and sends land on a real Loops account and cannot be recalled. State the action and the specific target in one line before the first write in a task, and let the user stop you. Reads need no confirmation.

Actions

Contacts

Action	Method	Path	Action id
Find a Contact	GET	/contacts/find	conn_mod_def::GJ40RqROcUE::Xng9E4f9RVacUnsDcGVsyQ
Create a Contact	POST	/api/v1/contacts/create	conn_mod_def::GJ40RZenIGw::B4EC_53eQaeDg1CZPRYk4w
Delete a Contact	POST	/contacts/delete	conn_mod_def::GJ40RZ4iMjI::iSMEbV_TSI6bN_OLVmosEQ
Update a Contact	PUT	/contacts/update	conn_mod_def::GJ40RqN_GSU::-OZPfvMnTiOR7aDmYoWMZw

ContactProperties

Action	Method	Path	Action id
List Contact Properties	GET	/contacts/properties	conn_mod_def::GJ40RiYdjNk::l63HVQHKSnKRnX7kLxBmyg
Create a Contact Property	POST	/contacts/properties	conn_mod_def::GJ40RYRnO6c::i38LF7ASTquxejURlaHtBQ

TransactionalEmails

Action	Method	Path	Action id
List Transactional Emails	GET	/api/v1/transactional	conn_mod_def::GJ40R5IZ8Q4::0RGMRplHSMuoJVHpS1mTCg
Send a Transactional Email to a Contact	POST	/transactional	conn_mod_def::GJ40R42agVA::1KvEwLJtTHeb6RIO_SRQYg

ApiKey

Action	Method	Path	Action id
Test an API Key	GET	/api/v1/api-key	conn_mod_def::GJ40RYu9etA::4ACkWdwqQFyQO8K5BnwsLA

Lists

Action	Method	Path	Action id
List Mailing Lists	GET	/lists	conn_mod_def::GJ40RqAUUZs::HOMU18-4Qq2OxfR8kH6dxQ

Events

Action	Method	Path	Action id
Send an Event	POST	/api/v1/events/send	conn_mod_def::GJ40RwgzTgE::YpqPJfFURv6sMLdFtu2mrQ

DedicatedSendingIps

Action	Method	Path	Action id
List Dedicated Sending IP Addresses	GET	/dedicated-sending-ips	conn_mod_def::GJ40RqZbp_M::mKrHftyuSlWkrPXRk_V0EQ

When a call fails

The error comes from Loops, not from One. A 400 or 422 means your parameters do not match the schema, so re-read the knowledge and fix the field. A 401 or 403 means the connection needs re-authorizing, which no retry will fix. A 404 means the id is not on this account. A 429 means slow down. Never retry a write more than once: the first attempt may have landed.

Full catalog: https://www.withone.ai/knowledge/loops

Integration knowledge by One (withone.ai), licensed under One-Knowledge-1.0. Attribution must be preserved in derivative works.