--- title: "SumUp MCP server for AI agents - actionlake" description: "Give Claude 42 SumUp actions through one MCP server: readers, checkouts, members, roles. Your agent never holds the credential. 100,000 calls a month free." canonical: https://actionlake.com/connectors/sumup updated: 2026-10-23 --- Connectors · Accounting & finance # SumUp MCP server for AI agents. actionlake is an MCP gateway: one remote MCP server that connects Claude and other MCP clients to SumUp and the rest of your systems. It gives your agent 42 SumUp actions (21 reads, 14 writes and 7 that wait for a confirmation) and holds the SumUp credential itself, so the agent never does. It paces SumUp's limits and records every call. Connecting SumUp needs your own SumUp OAuth app and one admin sign-in. [Connect SumUp free](https://actionlake.com/console?start=sandbox) [See pricing](https://actionlake.com/pricing) 100,000 free calls a month. No card, no email, no password: press Start a free sandbox on the next screen and keep the key it shows you. `claude mcp add --transport http actionlake https://connect.actionlake.com/mcp` the first call ``` do { action: "sumup.checkouts.list", intent: "check which SumUp account is connected" } # List checkouts · read · 1 upstream call ``` - 42 actions in one signed file - 21 read look, never change - 14 write create and update - 7 wait for a yes destructive, confirmed first Set up ## Connect SumUp in three steps. 1. 01 ### Add actionlake to Claude. Run the command once in Claude Code; its consent page can create a free sandbox: 100,000 calls a month, no card. In the Claude app, add a custom connector with the URL below and paste your key on the consent page. Creating a new sandbox from the Claude app is not yet tested by us. `https://connect.actionlake.com/mcp` 2. 02 ### Connect SumUp. OAuth 2.0, authorization code. You register your own OAuth app with SumUp, an admin signs in once, and you paste the app's client id and secret and the tokens from that sign-in; actionlake renews the access token from then on. actionlake stores what you paste write-only, sealed under your tenant's key. Before the first sign-in, SumUp needs an OAuth app of your own, registered in its developer portal. actionlake has no SumUp app to lend you. - `access_token` Access token from one sign-in with your own OAuth app - `refresh_token` Refresh token from the same sign-in; the access token is renewed from it - `client_id` SumUp OAuth client id - `client_secret` SumUp OAuth client secret for the same application ``` account { op: "connections.requirements", service: "sumup" } # free: exactly what to paste, and what is found for you ``` 3. 03 ### Make the first call. Check before a write. Ask in plain words; Claude picks the action. Before anything changes, `check` validates the call and prices it, for free. ``` do { action: "sumup.checkouts.list" } # list checkouts · read · 1 upstream call check { action: "sumup.members.create", input: { … } } # free: inputs, permissions, cost and confirmations, nothing sent ``` SumUp at a glance **Sign-in** OAuth 2.0, authorization code. You register your own OAuth app with SumUp, an admin signs in once, and you paste the app's client id and secret and the tokens from that sign-in; actionlake renews the access token from then on. **You provide** `access_token` `refresh_token` `client_id` `client_secret` **Limits we pace to** 100 calls a minute, per connection **API covered** SumUp REST API 1.0.0 (OpenAPI 3.1, published in the official SDK repositories)`api.sumup.com` **Built from** SumUp's documentation, read 23 October 2026[OpenAPI spec (GitHub)](https://raw.githubusercontent.com/sumup/sumup-go/main/openapi.json) [developer.sumup.com](https://developer.sumup.com/api) **Service file** Version 1.0.0, signed (Ed25519) **Cached reads** 21 of 21 reads, for up to 5 minutes; a write clears what it affects **Shared entities** 4, so ask can line SumUp up with your other systems **Data** Processed and stored in Sydney, Australia. No US region yet Capabilities ## What an AI agent can do in SumUp. 42 actions in 13 areas. Every one carries its effect, so a key can allow the reads and hold the rest. - **21** read look, never change - **14** write create and update - **7** destructive wait for a confirmation 1. ### Readers 10 4 read · 4 write · 2 destructive List Readers · Retrieve a Reader · Create a Reader · Create a Reader Checkout 2. ### Checkouts 7 2 read · 4 write · 1 destructive Create a checkout · List checkouts · Retrieve a checkout · Update a checkout 3. ### Members 5 2 read · 2 write · 1 destructive List members · Create a member · Retrieve a member · Update a member 4. ### Roles 5 2 read · 2 write · 1 destructive List roles · Create a role · Retrieve a role · Update a role 5. ### Customers 3 1 read · 2 write · 0 destructive Create a customer · Retrieve a customer · Update a customer 6. ### Transactions 3 2 read · 0 write · 1 destructive List transactions · Retrieve a transaction · Refund a transaction 7. ### Payment instruments 2 1 read · 0 write · 1 destructive List payment instruments · Deactivate a payment instrument 8. ### Persons 2 2 read · 0 write · 0 destructive List Persons · Get Person **5 more areas · 5 actions** - Memberships **1** - Merchants **1** - Payment methods **1** - Payouts **1** - Receipts **1** Top actions ## The SumUp API, shaped for agents. The ids your agent types, what each does, and the one name it shares with other systems. 25 of SumUp's 28 action names are shared with at least one other connector, so an agent learns them once. | Action | What it does | Effect | Same name in | | --- | --- | --- | --- | | `sumup.members.list` List members | List members. | read | `identity.user.list` 474 connectors | | `sumup.roles.list` List roles | List roles. | read | `identity.role.list` 184 connectors | | `sumup.members.create` Create a member | Create a member. | write | `identity.user.create` 262 connectors | | `sumup.roles.create` Create a role | Create a role. | write | `identity.role.create` 105 connectors | | `sumup.members.delete` Delete a member | Delete a member. | destructive | `identity.user.delete` 253 connectors | | `sumup.transactions.list` List transactions | List transactions. | read | `finance.payment.list` 75 connectors | | `sumup.payouts.list` List payouts | List payouts. | read | `finance.payout.list` 14 connectors | | `sumup.transactions.get` Retrieve a transaction | Retrieve a transaction. | read | `finance.payment.get` 80 connectors | | `sumup.customers.create` Create a customer | Create a customer. | write | `commerce.customer.create` 43 connectors | | `sumup.customers.get` Retrieve a customer | Retrieve a customer. | read | `commerce.customer.get` 45 connectors | | `sumup.payment_methods.list` Get available payment methods | Get available payment methods. | read | `finance.payment_method.list` 29 connectors | | `sumup.checkouts.create` Create a checkout | Create a checkout. | write | `commerce.checkout.create` 7 connectors | Try it ## Prompts to paste into Claude. Each one names the SumUp actions it will call, so you know what it reads and what it changes before you send it. 1. Read read List the payments recorded in SumUp this month, largest first. calls `sumup.transactions.list` 2. Write write Create a member in SumUp. Show me exactly what you will send before you save it. calls `sumup.members.create` Governance for SumUp ## Destructive actions wait for a yes. 7 SumUp actions are destructive. These are all of them: - Delete a member `sumup.members.delete` - Delete a role `sumup.roles.delete` - Deactivate a checkout `sumup.checkouts.deactivate` - Delete a reader `sumup.readers.delete` - Refund a transaction `sumup.transactions.refund` - Terminate a Reader Checkout `sumup.readers.terminate_checkout` - Deactivate a payment instrument `sumup.payment_instruments.deactivate` A destructive action runs only with `confirm: true`. Under the `human` policy the agent cannot confirm for itself: the run stops until a named person approves, in the console or from a signed link in an email. The cap on a key is refused before the call is sent, never after. do sumup.members.delete confirm_policy: **human** Delete a member? **intent:** the user asked me to delete a member run suspended · waiting for a named person · key _sumup-agent_ cannot confirm itself In the console, or from an emailed signed link. a key for this connector ``` account { op: "keys.create", name: "sumup-agent", allowed_actions: ["sumup.*"], cap_calls: 2000, confirm_policy: "human_for_writes", approval_rules: [ { match: "sumup.members.delete", approver: "lead@example.com" }, { match: "sumup.roles.delete", approver: "lead@example.com" }, { match: "sumup.checkouts.deactivate", approver: "lead@example.com" } ] } ``` Illustrative. Scoped to SumUp only, capped at 2,000 upstream calls, every write confirmed, and the destructive ones approved by a named person. Cost ## What SumUp costs on actionlake. Every SumUp action is one upstream call, the only thing actionlake bills. Searching, `check`, `cost`, `account` and any call SumUp refused with 401, 403, 429 or a 5xx are free. Paid plans start at US$49 a month for 250,000 calls, with overage from US$0.30 down to US$0.18 per 1,000. - 1 upstream call per action all 42 SumUp actions - 42 actions page each page of a long list is one call - 21 reads can be cached a cache hit costs nothing - 100,000 calls a month, free paid plans from US$49 a month for 250,000 [See pricing](https://actionlake.com/pricing) Action index ## Every SumUp action. 42 actions by area: the id your agent calls, what it does, and its effect. **Readers 10** - `sumup.readers.create` Create a Reader write - `sumup.readers.create_checkout` Create a Reader Checkout write - `sumup.readers.create_go_checkout` Create a Go Reader Payment write - `sumup.readers.delete` Delete a reader destructive - `sumup.readers.get` Retrieve a Reader read - `sumup.readers.get_checkout` Get a Reader Checkout read - `sumup.readers.get_status` Get a Reader Status read - `sumup.readers.list` List Readers read - `sumup.readers.terminate_checkout` Terminate a Reader Checkout destructive - `sumup.readers.update` Update a Reader write **Checkouts 7** - `sumup.checkouts.create` Create a checkout write - `sumup.checkouts.create_apple_pay_session` Create an Apple Pay session write - `sumup.checkouts.deactivate` Deactivate a checkout destructive - `sumup.checkouts.get` Retrieve a checkout read - `sumup.checkouts.list` List checkouts read - `sumup.checkouts.process` Process a checkout write - `sumup.checkouts.update` Update a checkout write **Members 5** - `sumup.members.create` Create a member write - `sumup.members.delete` Delete a member destructive - `sumup.members.get` Retrieve a member read - `sumup.members.list` List members read - `sumup.members.update` Update a member write **Roles 5** - `sumup.roles.create` Create a role write - `sumup.roles.delete` Delete a role destructive - `sumup.roles.get` Retrieve a role read - `sumup.roles.list` List roles read - `sumup.roles.update` Update a role write **Customers 3** - `sumup.customers.create` Create a customer write - `sumup.customers.get` Retrieve a customer read - `sumup.customers.update` Update a customer write **Transactions 3** - `sumup.transactions.get` Retrieve a transaction read - `sumup.transactions.list` List transactions read - `sumup.transactions.refund` Refund a transaction destructive **Payment instruments 2** - `sumup.payment_instruments.deactivate` Deactivate a payment instrument destructive - `sumup.payment_instruments.list` List payment instruments read **Persons 2** - `sumup.persons.get` Get Person read - `sumup.persons.list` List Persons read **Memberships 1** - `sumup.memberships.list` List memberships read **Merchants 1** - `sumup.merchants.get` Get Merchant read **Payment methods 1** - `sumup.payment_methods.list` Get available payment methods read **Payouts 1** - `sumup.payouts.list` List payouts read **Receipts 1** - `sumup.receipts.get` Retrieve receipt details read Questions ## The SumUp MCP server, answered. **Is there a SumUp MCP server for Claude?** Yes. actionlake is an MCP gateway: a remote MCP server that gives Claude, or another MCP client, 42 SumUp actions across readers, checkouts, members and roles, through the same eight tools it uses for every other connector. actionlake is independent; it is not made or endorsed by SumUp. **What do I need to connect SumUp?** Your own SumUp OAuth app, registered with SumUp (its client id and client secret), and the access and refresh tokens from one admin sign-in. actionlake has no SumUp app of its own, so this is not a one-step consent. actionlake renews the access token as it expires. The free call account { op: "connections.requirements", service: "sumup" } lists exactly what to paste. **Can an AI agent delete or change things in SumUp?** Only if its key allows it, and only with an explicit confirmation. 7 SumUp actions are destructive, including delete a member, delete a role and deactivate a checkout. Each runs only with confirm: true. Under the human confirm policy, or an approval rule on the key, the run waits until a named person approves it. **Will an AI agent use up my SumUp API limit?** actionlake paces every call to the limits in the SumUp service file: 100 calls a minute per connection. Repeated reads are answered from cache (21 SumUp actions can be), which never reaches SumUp. **What does a SumUp action cost?** One upstream call, the only unit actionlake bills. A list that pages bills one call per page (42 SumUp actions page). Cache hits, searches, dry runs and calls SumUp refused with 401, 403, 429 or a 5xx are free. The Free plan includes 100,000 calls a month with no card. Paid plans start at US$49 a month for 250,000 calls, with overage from US$0.30 down to US$0.18 per 1,000. **Which SumUp API does it cover?** The SumUp REST API 1.0.0 (OpenAPI 3.1, published in the official SDK repositories) at api.sumup.com. It is built from SumUp's documentation as read on 23 October 2026. 42 actions in 13 areas, each one in the signed service file (version 1.0.0). **Does actionlake keep my SumUp data, and where?** actionlake processes and stores data in Sydney, Australia; there is no US region yet. Reads may be cached for up to 5 minutes, and a write clears the reads it affects. Each run's request and response is kept, sealed, for your plan's trace window: 1 day on Free, 3 days on Starter, 7 days on Pro, 14 days on Team, 30 days on Business and 30 days on Enterprise. Your SumUp credential is sealed under your tenant's key, never logged and never returned. Your traffic is not used to train models. **Which AI clients can use it?** Claude Code, tested by us end to end, and the Claude app as a custom connector, tested by us with an existing key. Other MCP clients that support remote servers over Streamable HTTP (MCP revisions 2025-06-18 and 2025-11-25) and OAuth dynamic client registration, or a bearer header, should connect the same way; we have not tested them. Or plain REST, under the same action names. ## More connectors like SumUp Shares the most action names with - [Harvest 11](https://actionlake.com/connectors/harvest) - [Kinde Management API 10](https://actionlake.com/connectors/kinde-management-api) - [Mollie 9](https://actionlake.com/connectors/mollie) - [Avalara AvaTax 8](https://actionlake.com/connectors/avalara-avatax) - [Rossum 7](https://actionlake.com/connectors/rossum) - [Medplum 5](https://actionlake.com/connectors/medplum) Joins with, on shared entities - [HaloPSA 3](https://actionlake.com/connectors/halopsa) - [Microsoft 365 Users 2](https://actionlake.com/connectors/microsoft-365-users) - [Fortinet FortiGate 2](https://actionlake.com/connectors/fortinet-fortigate) - [Genesys Cloud CX 2](https://actionlake.com/connectors/genesys-cloud-cx) - [Rubrik Security Cloud 2](https://actionlake.com/connectors/rubrik-security-cloud) - [Commvault Cloud 2](https://actionlake.com/connectors/commvault-cloud) Browse - [All Accounting & finance connectors](https://actionlake.com/connectors/category/accounting-and-finance) - [All connectors](https://actionlake.com/connectors) - [How actionlake compares](https://actionlake.com/compare) actionlake is independent. It is not made or endorsed by SumUp; the name is the vendor's own. Counts are from the SumUp service file, version 1.0.0. ## Give your agent SumUp today. [Connect SumUp free](https://actionlake.com/console?start=sandbox) [See pricing](https://actionlake.com/pricing) Start free - 100,000 calls/month, no card. No signup. Hard caps on every key. Cached answers are free. --- Source: https://actionlake.com/connectors/sumup More: https://actionlake.com/llms.txt