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Connectors / Finance · HTTP Connector
Automate Payrexx with Tray.ai
Create a gateway, create a subscription and create an invoice in Payrexx. Connect Payrexx to the rest of your finance stack with Tray.ai.
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What can you do with Payrexx on Tray.ai?
Payrexx is a Swiss payment platform for accepting online, in-store, and invoice payments through many payment providers, with payment pages, paylinks, and subscriptions. Tray.ai connects to Payrexx through the HTTP Connector, so your workflows can call the Payrexx API alongside the rest of your stack.
- Create an invoice in Payrexx when an order is approved in your CRM, so the customer can pay online.
- List payouts each week and reconcile them against bank deposits in your accounting system.
- Create a gateway for each new booking in your booking system so the customer gets a payment page for the exact amount due.
- Connects through
- HTTP Connector
- Authentication
- An API key in a request header
- Base URL
- https://api.payrexx.com/v1.0
Set it up
Connect Payrexx to Tray.ai
Each step uses Payrexx's own API details, from its documentation.
Step 1
Save Payrexx's API key
Save the key as a Tray.ai authentication. The HTTP Client puts it in the request header, read from $.auth. The key stays out of the workflow and out of the logs.
Step 2
Point the HTTP Client at the API
Add an HTTP Client step and use https://api.payrexx.com/v1.0 as the base URL. Or paste a cURL example from Payrexx's API docs, and Tray.ai fills in the method, URL, and headers.
Step 3
Start with “Get a gateway”
It's one of 16 documented actions, under Gateways. The response comes back as data the next step can map into your other apps.
Step 4
Hand it to an AI agent
Wrap “Create a gateway” and “List transactions” in workflows, and Tray.ai's Agent Gateway for MCP publishes them as governed tools Claude and other AI agents can call.
What the Payrexx API covers
5 resources and 16 documented actions, each one a call the HTTP Connector can make from a Tray.ai workflow. Connecting it takes a few clicks: here's how.
Gateways
- Create a gateway
- Get a gateway
Transactions
- List transactions
- Get a transaction
- Cancel a waiting transaction
Subscriptions
- List subscriptions
- Get a subscription
- Create a subscription
- Update a subscription
Invoices
- List invoices
- Get an invoice
- Create an invoice
- Update an invoice
- Delete an invoice
Payouts
- List payouts
- Get a payout
Checked against Payrexx's own documentation on 2026-10-22
How Tray.ai makes this work
Payrexx plugs into the whole Tray.ai platform
Intelligent Integration
Integrate and automate across 9,000+ apps, databases, APIs, and services with visual workflows, error handling, and observability.
Learn more →Agent Builder
Build AI agents that read, write, and take action in Payrexx — with guardrails, audit, and human-in-the-loop.
Learn more →Agent Gateway for MCP
Expose Payrexx actions as governed MCP tools — observable, rate-limited, authenticated.
Learn more →Tray Helix
Build apps on Payrexx data with your AI assistant, then deploy, run, and govern them on Tray.ai.
Learn more →More finance apps on Tray.ai
Dedicated connectors and other apps Tray.ai reaches in the same category. See every finance connector →
Frequently asked questions
What can a Tray.ai workflow do in Payrexx?
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The Payrexx API documents 16 actions across 5 resources (Gateways, Transactions, Subscriptions, Invoices, Payouts). For example: Create a gateway; List transactions; List subscriptions. A workflow can make any documented call through the HTTP Connector.
How does Tray.ai authenticate with Payrexx?
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The Payrexx API uses an API key in a request header. You save it once as a Tray.ai authentication, and the HTTP Connector adds it to every request.
See Payrexx working against your stack.
We'll walk through a tailored demo with your systems plugged in.
Thanks — someone from our team will be in touch soon.