Payments
You connect your own account, and the money settles there. Mercemur adds no per-transaction fee.Stripe
A restricted key on your own account. No
Stripe-Account header, no application
fee.Razorpay
Your key id and secret. UPI, cards and netbanking. No Route transfer attached.
Dodo Payments
Merchant of record. Dodo handles tax and chargebacks and charges you for that
directly. Cannot serve a cart that needs shipping.
Adyen
An API key on your own account. Card acquiring, 3D Secure, and risk scoring. No
split attached.
Shipping
Shiprocket
Indian courier aggregation. Credentials are sealed under their own encryption key,
separate from every other secret in the system.
Manual fulfilment
No carrier account needed. Mark shipped yourself and the customer is notified the
same way.
Marketing
Klaviyo
Connected by OAuth rather than a pasted key. Syncs profiles and events, and can
import an existing list.
Built-in campaigns
Campaigns, flows, forms and preferences without a third party. See the Marketing
tab in the reference.
SMS, WhatsApp and push are deliberately not native. They ride your own provider
through the integration surface below, so the sending relationship, and the
deliverability reputation, stays yours.
Migrating in
Shopify catalogue
Products, variants, collections, customers and orders.
Shopify theme
Translated into a Mercemur storefront rather than rebuilt. Built from Dawn and
Horizon.
Connect anything else
These two are the general case, and most integrations are one of them.Webhooks
Mercemur calls you when something happens. Signed, retried, and replayable from the
CLI while you are building the receiver.
The REST API
You call Mercemur. 567 operations, one key, scoped per grant.
MCP
The third door, and the one worth knowing about if the other side is an AI client. An
agent connects once and can read and write the store directly, without anyone writing
an integration at all.