Connect
Klaviyo
Klaviyo connects through OAuth 2.0. You authorize Modiva from Klaviyo's own consent screen — Modiva then reads and writes profiles and lists and reads segments, campaigns, metrics, events and flows through one unified API and MCP server. Klaviyo access tokens are short-lived; Modiva refreshes them automatically so your connection stays healthy without you reconnecting.
Before you start
- A Klaviyo account.
- Access to the Klaviyo account you want to connect.
Step-by-step setup
- 1
Sign in to Modiva
Log in at modiva.ai and open the Dashboard. You need a Modiva account before you can connect any platform — creating one takes a minute and no credit card is required for the free tier.
The Modiva dashboard — your home for connections, posts and analytics. - 2
Open Connections → New connection
In the left sidebar choose Connections, then click New connection. You'll see the full catalogue of platforms grouped by category (Social, Ads and CRM).
The connection picker. Use the search box or category filter to find your platform. - 3
Select Klaviyo
Click the Klaviyo card. Modiva redirects you to Klaviyo's official sign-in and permission screen — your password is entered on Klaviyo, never on Modiva.
Click Connect on the Klaviyo card to start the secure OAuth flow. - 4
Authorize Modiva on Klaviyo
Review the permissions Modiva is requesting and approve them. If you manage more than one account, page or profile, pick the one you want Modiva to manage.
Klaviyo's consent screen. Approve the requested scopes to continue. - 5
You're connected
Klaviyo now sends you back to Modiva and the connection appears with a green Connected status. From here it's available to every MCP key and API call in your workspace.
A healthy connection shows a green dot and the connected account name.
Permissions Modiva requests
When you connect Klaviyo, Modiva asks only for the access it needs to run the tools you use. You can revoke it any time from Klaviyo or by disconnecting in Modiva.
- Read your account identity
- Read and write profiles
- Read and write lists; read segments
- Read campaigns, metrics, events and flows
- Stay connected by refreshing access tokens
Troubleshooting & FAQ
Where is my Klaviyo password stored?
Nowhere. You sign in on the provider's own site and Modiva only receives a scoped access token, which is encrypted at rest with AES-256-GCM. Modiva never sees your password.
My connection says Expired or Error — what do I do?
Open Connections, find the platform and click Reconnect (or Refresh token). Providers periodically expire tokens or revoke them when you change your password; reconnecting re-runs the consent screen and restores access.
How do I disconnect?
Open Connections, click the Klaviyo row and choose Disconnect. Modiva deletes the stored token immediately. You can also revoke Modiva from inside Klaviyo's own app settings.
Which Klaviyo account gets connected?
The account you're signed into when you approve the consent screen. If you manage several Klaviyo accounts, switch to the one you want before authorizing.
My token keeps needing refresh — is that a problem?
No. Klaviyo access tokens are short-lived by design. Modiva stores a refresh token and renews access automatically in the background, so you won't be asked to reconnect unless you revoke access in Klaviyo.
Can Modiva send campaigns on Klaviyo?
The connection reads campaigns, metrics, events and flows and reads/writes profiles and lists. Building and sending campaigns is done in Klaviyo; Modiva focuses on syncing audiences and pulling performance data.
Need help with Klaviyo?
Fin can answer follow-up questions and walk you through any step.
Klaviyo playbooks
Connected? Put Klaviyo to work with these free growth playbooks.