Marketing Automation

Connect your AI agent to Klaviyo

Klaviyo is a data-driven email and SMS marketing platform that allows e-commerce brands to deliver targeted messages, track conversions, and scale customer relationships

Set it up in Melso

1In Melso, open Settings → Agent Apps and hit Connect on Klaviyo.
2Finish the API_KEY / OAUTH2 sign-in in the window that opens. Melso stores the connection, not your credentials.
3Open your agent, go to its Agent Apps tab, and allow Klaviyo.
4Give the agent a task. It calls Klaviyo itself when the work needs it.

Get Melso

Klaviyo

klaviyo

225

tools

triggers

API_KEY / OAUTH2

auth

#59

rank

Marketing AutomationEmail Newsletters

What you get

What Klaviyo gives your agent

The tools, permissions, and events Klaviyo exposes — the same ones your agent can use once the app is authorized.

What you sign in with

Klaviyo connects with API_KEY / OAUTH2.

Client id
Client secret

Permissions

accounts:readcampaigns:readcampaigns:writeconversations:readconversations:writecatalogs:readcatalogs:write

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24 toolsOAUTH2

Tools Klaviyo exposes

KLAVIYO_ADD_PROFILE_TO_LIST

Add Profile to List

Add profiles to a Klaviyo list by profile IDs or email addresses. This action subscribes profiles to a marketing list, which is ideal for giving marketing consent. You can add up to 1000 profiles per call using either their Klaviyo profile IDs or email addresses. Rate limits: 10/s burst, 150/m steady. Required scopes: `lists:write` and `profiles:write`. Preconditions: - Either profile_ids or emails must be provided (not both) - Maximum 1000 profiles per call - Email addresses must be valid format - The list must exist and be accessible

KLAVIYO_ASSIGN_CAMPAIGN_MESSAGE_TEMPLATE

Assign campaign message template

Creates a non-reusable version of the template and assigns it to the message. *Rate limits*: Burst: `10/s` Steady: `150/m` **Scopes:** `campaigns:write`

KLAVIYO_BULK_CREATE_CLIENT_EVENTS

Bulk create client events

Use the client-side endpoint with a public API key to track profile activity. It accepts up to 1000 events/request with rates of 10/s burst and 150/m steady. For server-side, use the bulk create event endpoint.

KLAVIYO_BULK_CREATE_EVENTS

Bulk create events

Bulk create events for multiple profiles in a single request. Accepts up to 1,000 events with a 5MB max payload. Each event requires a profile identifier (email, phone_number, or external_id) and a metric name. Events are processed asynchronously; a 202 response indicates acceptance, not completion. Rate limits: 10/s burst, 150/min steady.

KLAVIYO_CANCEL_CAMPAIGN_SEND

Cancel Campaign Send

Cancel or revert a campaign send job. Use 'cancel' to permanently stop a campaign (status becomes CANCELED), or 'revert' to return it to DRAFT for editing. This action modifies a campaign send job that is currently queued or sending. The cancel action is irreversible and sets the status to CANCELED. The revert action returns the campaign to DRAFT status, allowing further modifications. Rate limits: 10/s burst, 150/m steady. Required scope: `campaigns:write`. Preconditions: - Valid API key with campaigns:write scope - Campaign send job ID must exist and be accessible - Campaign must be in a state that allows cancellation (queued or sending)

KLAVIYO_CREATE_BACK_IN_STOCK_SUBSCRIPTION

Create back in stock subscription

Use the server-side endpoint to subscribe to restock alerts, following the Back in Stock API guide. For client-side, use the POST endpoint provided. Rate limits: 350/s burst and 3500/m steady. Required scopes: catalogs:write, profiles:write.

KLAVIYO_CREATE_CAMPAIGN

Create campaign

Creates a campaign given a set of parameters, then returns it. *Rate limits*: Burst: `10/s` Steady: `150/m` **Scopes:** `campaigns:write`

KLAVIYO_CREATE_CAMPAIGN_CLONE

Create campaign clone

Clones an existing campaign, returning a new campaign based on the original with a new ID and name. *Rate limits*: Burst: `10/s` Steady: `150/m` **Scopes:** `campaigns:write`