Connect Fintech APIs to Claude

Connect Fintech APIs to Claude

Claude is good at intent. Payment APIs are unforgiving. If you wire them together with a raw key and a prompt, one retry can charge a card twice. One loose instruction can refund a month of charges.We just shipped a short video on this: Swytchcode for Fintech. You can connect Claude Code, the Anthropic SDK, or any agent built on it to the payment APIs you already use. Swytchcode sits in the middle. The agent asks. You decide what it is allowed to do.

Why a raw connection is not enough

Giving an agent a Stripe key is not an integration. It is an open pipe.Payment APIs expect authentication, idempotency, retries that do not double-charge, schema checks, and an audit trail. Claude will happily retry a failed call. Your processor will happily treat that retry as a new charge.You need the agent to run reliably. You also need to keep it under control.

What you can connect

- Stripe
- PayPal
- Square
- Adyen
- Razorpay
- Mollie
- Verifone
- Alchemy Payments

Claude talks in English. Swytchcode turns that into a typed, policy-checked API call.

How it works with Claude

1. Install the CLI:
   

npx swytchcode

2. Initialize a project and wire Claude Code (or Cursor) as the editor:

swytchcode init --editor=claude

3. Pull a payment integration and enable only the methods you want:

swytchcode search stripe
swytchcode get stripe
swytchcode add stripe.create_payment

Then let Claude do the work in language you already use:

> Find failed Stripe charges and refund Maya Chen $48.

Swytchcode handles

1. authentication,
2. retries,
3. idempotency,
4. auditability,
5. and policies

If the agent asks to refund every charge from last month, a policy can block it. That is the guardrail beat from the video: you decide exactly what your agent is allowed to do.

What Claude can do on payments

Once the tools are enabled, Claude can:

- Find charges and invoices
- Issue refunds you have approved
- Create invoices
- Capture payments
- Queue payouts

It cannot invent new powers. If you did not add the method, it is not there. If a policy says no bulk refunds, the call does not go out.

Run them reliably. Keep them under control.

The point of the launch is not “Claude can call Stripe.” Lots of glue can do that.The point is a production path: Claude for the conversation, Swytchcode for execution. Auth, retries, idempotency, auditability, policies, and guardrails stay on your side.Give Claude access to fintech APIs. Keep the control with Swytchcode.

Docs: docs.swytchcode.com