Klarna MCP server

What the model can do

Klarna payments for merchants: payouts with their totals and fees, payout summaries for a period, settlement transactions by payout or order, an order by id with its status, amounts, captures and refunds, and due-date extension fees; when you ask, can capture an order (charging the customer), refund it, cancel it, release or extend its authorization, change its amount, update merchant references or the shipping address, add tracking details, extend a customer's due date, and resend a capture's customer communication.

Reads

• klarna_list_payoutsKlarna payouts to the merchant, filtered by payout date and currency: payment reference, date, currency, settlement type and the non-zero totals…
• klarna_get_payoutOne Klarna payout by its payment reference, with its totals in minor units.
• klarna_payout_summaryKlarna payout totals for a period, one row per settlement currency: sales, returns, fees, commission, holdback, tax and settlement amount…
• klarna_list_transactionsKlarna settlement transactions for one payout (payment_reference) or one order (order_id): type (SALE, RETURN, FEE, COMMISSION, REVERSAL...), amount…
• klarna_get_orderA Klarna order by order id: status (AUTHORIZED, PART_CAPTURED, CAPTURED, CANCELLED, EXPIRED, CLOSED), fraud status, order, captured…
• klarna_list_capturesThe captures on a Klarna order: capture id, amount, when, reference, refunded amount.
• klarna_get_refundOne refund on a Klarna order: amount (minor units), when, reference, description.
• klarna_due_date_optionsHow far a Klarna capture's customer due date can be extended and the fee to the merchant for each option (minor units).

Acts, when you ask

These change something in Klarna. The model is told to use them only when you ask for exactly that, and each one is granted by name: per team on a shared connection, by the owner on a personal one.

• klarna_capture_orderCaptures an amount on a Klarna order, which bills the customer…
• klarna_refund_orderRefunds an amount on a captured Klarna order; Klarna returns the money to the customer and tells them, and it is deducted from the merchant's payout.
• klarna_cancel_orderCancels a Klarna order that has not been captured; the customer's authorization is voided and Klarna tells them.
• klarna_release_authorizationReleases what is left uncaptured on a part-captured Klarna order, closing it so no more can be captured.
• klarna_extend_authorizationExtends how long a Klarna order can still be captured; Klarna may refuse depending on the order and the merchant's agreement.
• klarna_update_order_amountChanges the total (and optionally the lines) of a Klarna order before it is captured; the customer sees the new order…
• klarna_update_merchant_referencesOverwrites a Klarna order's merchant reference 1 (the order number the customer sees) and/or reference 2 (internal).
• klarna_update_shipping_addressReplaces the shipping address on a Klarna order (Klarna may refuse depending on the order's state).
• klarna_add_shipping_infoAdds shipping company, method and tracking details to a Klarna order, or to one capture of it when capture_id is given…
• klarna_extend_due_dateExtends the customer's payment due date on a Klarna capture by a number of days Klarna offers…
• klarna_resend_customer_communicationMakes Klarna send the customer the communication for a capture again (their payment details, by email).

Connect it

First connect Klarna on Dashboard → Connections, then add Memtro to your client once. The Klarna tools appear alongside the tools of everything else you have connected; nothing is configured per connector.

claude plugin marketplace add memtro-org/claude-memtro
claude plugin install memtro@memtro --config api_key=sk-memtro-...

{
  "mcpServers": {
    "memtro": {
      "url": "https://platform.memtro.com/api/mcp",
      "headers": {
        "Authorization": "Bearer sk-memtro-..."
      }
    }
  }
}

{
  "mcp": {
    "memtro": {
      "type": "remote",
      "url": "https://platform.memtro.com/api/mcp",
      "headers": {
        "Authorization": "Bearer sk-memtro-..."
      }
    }
  }
}

Who may use it

The key identifies the person, and the server offers that person the tools they may use everywhere else in Memtro. A shared Klarna connection is used by the teams an administrator granted it to, tool by tool, on the Permissions page; a personal connection is used by its owner alone, and its tools that act stay off until the owner allows them. See Teams and permissions and Connectors.

Ask it like this

• › What did Klarna pay out last week?
• › What fees and commission came off this month's payouts?
• › What is the status of order 4f1c-77, and has it been captured?
• › Which transactions make up our latest payout?
• › Refund the returned jacket on order 4f1c-77.

Questions

Is this an official Klarna MCP server?

No. It is Memtro's MCP server with Memtro's Klarna connector behind it: the connector reads Klarna through its API with the credentials you connect on Dashboard → Connections, and Klarna publishes nothing here. The same endpoint carries every other system you connect and Memtro's memory tools.

What does it cost?

Nothing on top of Memtro. One price per organisation by its number of users, from $50 a month for up to 10 users after a 7-day free trial, with every connector, the MCP server, jobs and memory included. You bring your own model keys.

Can it change anything in Klarna?

Only when you ask, and only what it has been granted: capture an order (bills the customer); refund an order (returns money to the customer); cancel an uncaptured order; release an order's remaining authorization; extend an order's authorization time; change an uncaptured order's amount and lines; update an order's merchant references; update an order's shipping address; add shipping and tracking details to an order or capture; extend a customer's payment due date (charges the merchant a fee); resend a capture's customer communication. Every other tool reads, searches or lists. An administrator grants each acting tool by name per team, and a personal connection acts only after its owner allows it.

Which clients work?

Any MCP client that speaks Streamable HTTP: Claude Code, Cursor, Claude Desktop, OpenCode, Codex, Zed, Windsurf, Cline and the Anthropic and OpenAI SDKs. There is no local process to run; the server is remote and authenticated with your key.

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