uni-one

name

uni-one

description

UniOne is an email delivery platform that provides APIs and SMTP infrastructure for transactional and marketing email sending, along with deliverability tools, analytics, and list management, allowing developers and businesses to integrate reliable outbound email into applications and communication workflows. Read and write UniOne data through One: templates, projects, domains, unsubscribed, eventdump, webhook and more, 35 actions with real parameter documentation. Use whenever the user asks to look something up in UniOne, create or update a record there, or build code against the UniOne API.

UniOne through One

UniOne is an email delivery platform that provides APIs and SMTP infrastructure for transactional and marketing email sending, along with deliverability tools, analytics, and list management, allowing developers and businesses to integrate reliable outbound email into applications and communication workflows.

One exposes UniOne 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 uni-one 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 UniOne 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 UniOne 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

Templates

Action	Method	Path	Action id
Delete a Template	POST	/en/transactional/api/v1/template/delete.json	conn_mod_def::GMK7Y9VYgrQ::8gyqCoRUQki6mglnPvympg
List Templates	POST	/en/transactional/api/v1/template/list.json	conn_mod_def::GMK7ZHmckJM::QExZjrYmRueNf5psxgTibA
Set an Email Template	POST	/en/transactional/api/v1/template/set.json	conn_mod_def::GMK7Y-N0e3o::XDMNcndySReow5zn97FoUw

Projects

Action	Method	Path	Action id
Create a Project	POST	/en/transactional/api/v1/project/create.json	conn_mod_def::GMK7YuV7Nzc::jgrv1qvwTeKJZNcZvQbq6w
List Projects	POST	/en/transactional/api/v1/project/list.json	conn_mod_def::GMK7YsNEldI::hHh66WxBTXSiKCV3k6hW1g
Update a Project	POST	/en/transactional/api/v1/project/update.json	conn_mod_def::GMK7Yt3K7O0::5xYwnQF2SwCAraeK8BQg9A

Domains

Action	Method	Path	Action id
Delete a Domain	POST	/en/transactional/api/v1/domain/delete.json	conn_mod_def::GMK7YPQP8jQ::TCCqC7cLRWivRH2C3k2coA
List Registered Domains	POST	/en/transactional/api/v1/domain/list.json	conn_mod_def::GMK7YRX6Q_k::06LLeHb9Ri2GpLwV3AnXSA

Unsubscribed

Action	Method	Path	Action id
Check Whether an Email Is Unsubscribed	POST	/en/transactional/api/v1/unsubscribed/check.json	conn_mod_def::GMK7YkGMbzY::34lwo5MoSC6zpbPOvKOv4Q
Set an Email as Unsubscribed	POST	/en/transactional/api/v1/unsubscribed/set.json	conn_mod_def::GMK7Yka_4Cs::z5Q_1qCKR7iBDlEI2KTYwA

EventDump

Action	Method	Path	Action id
Create an Event Dump	POST	/en/transactional/api/v1/event-dump/create.json	conn_mod_def::GMK7YkxzmEE::NezcnIlbRmeBE3-z-FFDgw
Delete an Event Dump	POST	/en/transactional/api/v1/event-dump/delete.json	conn_mod_def::GMK7YdAJ6Jw::fq22F-VtQ1eYUDtZ7av6SA

Webhook

Action	Method	Path	Action id
Get a Webhook	POST	/en/transactional/api/v1/webhook/get.json	conn_mod_def::GMK7ZKkEJC8::1kM8clZfRQi8pz3E2beEFA
Set a Webhook	POST	/en/transactional/api/v1/webhook/set.json	conn_mod_def::GMK7ZKzVGpw::HK-iJ-YOTo22s2awliBfUQ

DnsRecords

Action	Method	Path	Action id
Get DNS Records for a Domain	POST	/en/transactional/api/v1/domain/get-dns-records.json	conn_mod_def::GMK7YQhyCoE::0hUk7Ul7RluGNOIamXvcjA

Template

Action	Method	Path	Action id
Get Template Properties by ID	POST	/en/transactional/api/v1/template/get.json	conn_mod_def::GMK7Y-SBUsM::rGAkrx9xS5-swKpJFE-UcQ

EmailValidation

Action	Method	Path	Action id
Validate a Single Email Address	POST	/en/transactional/api/v1/email-validation/single.json	conn_mod_def::GMK7YdD2VxM::3c_dO97tSqGHRG-ONlRn1Q

FormerSubscriberSubscription

Action	Method	Path	Action id
Subscribe a Former Subscriber by Email	POST	/en/transactional/api/v1/email/subscribe.json	conn_mod_def::GMK7YdTmB-I::jGaAXzgdTKi91Vdb0IPZ_A

EventDumps

Action	Method	Path	Action id
List Event Dumps	POST	/en/transactional/api/v1/event-dump/list.json	conn_mod_def::GMK7YkINJ8w::UpAKxurlS3qi9tLfcWtGoA

DomainVerificationRecord

Action	Method	Path	Action id
Validate a Domain Verification Record	POST	/en/transactional/api/v1/domain/validate-verification-record.json	conn_mod_def::GMK7YUPo_rg::wnTg_QnUTM2gwMp8B2gmMQ

Domain

Action	Method	Path	Action id
Validate DKIM for a Domain	POST	/en/transactional/api/v1/domain/validate-dkim.json	conn_mod_def::GMK7YXwiVjE::12p-37uuQzerBiArXkOmWQ

EventDumpProperties

Action	Method	Path	Action id
Get Event Dump Properties	POST	/en/transactional/api/v1/event-dump/get.json	conn_mod_def::GMK7Ycym8vk::TyRcmU93SkKEDvqgynIPdg

Email

Action	Method	Path	Action id
Send Email Using UniOne Transactional API v1	POST	/en/transactional/api/v1/email/send.json	conn_mod_def::GMK7YdDiG-w::ttm-SF6ORJ2Z7JkCadT-wQ

UnsubscribedEmails

Action	Method	Path	Action id
List Unsubscribed Emails	POST	/en/transactional/api/v1/unsubscribed/list.json	conn_mod_def::GMK7YkmHgDY::TZzsPKSURoWL7NSeJ_gIgw

Project

Action	Method	Path	Action id
Delete a Project	POST	/en/transactional/api/v1/project/delete.json	conn_mod_def::GMK7Ythh-yc::QGkNOGLsSB-fnI6WtVzcsQ

Suppression

Action	Method	Path	Action id
Set Suppression Using Suppression	POST	/en/transactional/api/v1/suppression/set.json	conn_mod_def::GMK7YuHB5VA::w88dR1bTRMeWKsoWbJU8xQ

System

Action	Method	Path	Action id
Ping the System	POST	/en/transactional/api/v1/system/ping.json	conn_mod_def::GMK7Y0p75YA::mp88WGFlSUieHE_bal6dsw

SuppressionList

Action	Method	Path	Action id
Delete from Suppression List	POST	/en/transactional/api/v1/suppression/delete.json	conn_mod_def::GMK7Y1GPGGU::BfW7jfN3SOipJU7ROJmPsQ

Suppressions

Action	Method	Path	Action id
List Suppressions	POST	/en/transactional/api/v1/suppression/list.json	conn_mod_def::GMK7Y2PLaf8::Y5ZPy-6GQ7GHdo8h3lBzPg

EmailSuppressions

Action	Method	Path	Action id
Get Email Suppression Details	POST	/en/transactional/api/v1/suppression/get.json	conn_mod_def::GMK7Y2RYTc0::S2UY5NtFRqKjFnXAHzDYbg

SystemInfo

Action	Method	Path	Action id
Get System Info	POST	/en/transactional/api/v1/system/info.json	conn_mod_def::GMK7Y2TP1fs::f7XVSKPBR3K-QnLJ-9LmgA

Tag

Action	Method	Path	Action id
Delete a Tag	POST	/en/transactional/api/v1/tag/delete.json	conn_mod_def::GMK7Y9MhTRk::ftmqJyIGRPCKuANIQtfViw

Tags

Action	Method	Path	Action id
List Tags	POST	/en/transactional/api/v1/tag/list.json	conn_mod_def::GMK7Y9NBdDw::zPrDu68bRLirmv4NJQNX1Q

Webhooks

Action	Method	Path	Action id
List Webhooks	POST	/en/transactional/api/v1/webhook/list.json	conn_mod_def::GMK7ZG3ro-c::TqtcPGbzR1qFCpCKHJclzg

WebhookHandler

Action	Method	Path	Action id
Delete a Webhook Handler	POST	/en/transactional/api/v1/webhook/delete.json	conn_mod_def::GMK7ZKby92M::BZyn8OwYThCVsnpBI6c6vQ

When a call fails

The error comes from UniOne, 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/uni-one

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