For Agents
Programmatically get available payment methods, create a checkout. Covers 45 operations with Bearer, oauth2 authentication.
Install Jentic One Beta
Jentic One is a self-hosted execution layer for AI agents. It lets your agent call the SumUp REST API, or any other public or private API you need. You set the rules, the agent never sees your credentials, and every call is logged.
Two steps, two machines. Install the instance in a safe environment, then register your agent from wherever it runs.
Step 1: Jentic One Host machine
# On the machine that will host your Jentic One instance:
curl -fsSL https://raw.githubusercontent.com/jentic/jentic-one/main/tools/install.sh | shStep 2: Agent machine
# On the machine where your agent runs (keep this separate from the instance):
curl -fsSL https://raw.githubusercontent.com/jentic/jentic-one/main/tools/install.sh | sh
jentic register # connects your agent to your Jentic One instanceJentic One is in public beta. The setup above keeps your agent separate from the instance, which is what you want before using real credentials: an agent running as the same OS user as Jentic One can read its stored keys directly. Just evaluating? A single local install is fine to start. See the secure deployment guide for the tiers.
What an agent can do with SumUp REST API.
Get available payment methods
Create a checkout
List checkouts
Retrieve a checkout
GET STARTED
Use for: I need to available payment methods, I want to a checkout, Search for checkouts, Find all a checkout
Not supported: Does not handle communications, crm, or developer tools — use for payments only.
SumUp’s REST API operates with [JSON](https://www.json.org/json-en.html) HTTP requests and responses. The request bodies are sent through resource-oriented URLs and use the standard [HTTP response codes](https://developer.mozilla.org/docs/Web/HTTP/Status). You can experiment and work on your integration in a sandbox that doesn't affect your regular data and doesn't process real transactions. To cr. The API exposes 45 endpoints secured with Bearer, oauth2 authentication.
Process a checkout
Deactivate a checkout
Patterns agents use SumUp REST API for, with concrete tasks.
★ Payments Operations
Use the SumUp REST API to perform payments operations programmatically. The API provides 45 endpoints covering core functionality including get available payment methods, create a checkout, list checkouts.
Call GET /v0.1/merchants/{merchant_code}/payment-methods to get available payment methods
Automated Checkouts Management
Automate checkouts operations by combining multiple SumUp REST API endpoints. Agents can create a checkout and then list checkouts in a single workflow.
Call POST /v0.1/checkouts to create a checkout, then verify the result
AI Agent Integration via Jentic
AI agents discover and call SumUp REST API endpoints through Jentic without managing credentials directly. An agent searches for the required operation by intent, receives the matching endpoint schema, and executes the call with Jentic-managed authentication. This eliminates the need to read API documentation or handle Bearer, oauth2 tokens manually.
Search Jentic for 'get available payment methods', load the operation schema, and execute with Jentic-managed credentials
45 endpoints — sumup’s rest api operates with [json](https://www.
METHOD
PATH
DESCRIPTION
/v0.1/merchants/{merchant_code}/payment-methods
Get available payment methods
/v0.1/checkouts
Create a checkout
/v0.1/checkouts
List checkouts
/v0.1/checkouts/{id}
Retrieve a checkout
/v0.1/checkouts/{id}
Process a checkout
/v0.1/checkouts/{id}
Deactivate a checkout
/v0.1/customers
Create a customer
/v0.1/customers/{customer_id}
Retrieve a customer
/v0.1/merchants/{merchant_code}/payment-methods
Get available payment methods
/v0.1/checkouts
Create a checkout
/v0.1/checkouts
List checkouts
/v0.1/checkouts/{id}
Retrieve a checkout
/v0.1/checkouts/{id}
Process a checkout
Three things that make agents converge on Jentic-routed access.
Credential isolation
SumUp REST API Bearer, oauth2 credentials are stored encrypted in the Jentic vault (MAXsystem). Agents receive scoped access tokens — raw secrets never enter the agent context.
Intent-based discovery
Agents search by intent (e.g., 'get available payment methods') and Jentic returns the matching SumUp REST API operation with its input schema, so the agent can call the right endpoint without browsing docs.
Time to first call
Direct SumUp REST API integration: 1-3 days for auth handling, response parsing, and error cases. Through Jentic: under 1 hour — search, load schema, execute.
Alternatives and complements available in the Jentic catalogue.
Stripe
Alternative payments API
Choose Stripe when you need a different approach to payments operations
Specific to using SumUp REST API through Jentic.
What authentication does the SumUp REST API use?
The SumUp REST API uses Bearer, oauth2 authentication. Through Jentic, these credentials are stored encrypted in the MAXsystem vault and injected at execution time, so raw secrets never enter the agent context.
Can I get available payment methods with the SumUp REST API?
Yes. Use the GET /v0.1/merchants/{merchant_code}/payment-methods endpoint. The API returns structured JSON responses that agents can parse and act on directly.
What are the rate limits for the SumUp REST API?
Rate limits are not specified in the OpenAPI spec. Check the vendor documentation for current limits. Through Jentic, rate limiting is handled automatically with retry logic built into the execution layer.
How do I get available payment methods through Jentic?
Install the Jentic SDK with pip install jentic, authenticate at https://app.jentic.com/sign-up, then search for 'get available payment methods'. Jentic returns the matching SumUp REST API operation with its input schema. Load the schema and execute the call — credentials are injected automatically.
How many endpoints does the SumUp REST API have?
The SumUp REST API exposes 45 endpoints covering checkouts, customers, transactions operations.
/v0.1/checkouts/{id}
Deactivate a checkout
/v0.1/customers
Create a customer
/v0.1/customers/{customer_id}
Retrieve a customer