Developer Tutorials · Payments Integration

Learn Payments API Integration. Build Real Things.

No theory, no fluff. These tutorials take you from an empty editor to a working integration — with copy-paste code in Node.js, Python, and cURL. Pick a topic and start building.

Start with: ACH Transfer → Browse All Tutorials

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Working Code

Real, copy-paste code snippets that actually run

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3 Languages

Node.js, Python, and cURL for every code example

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Sandbox-first

All tutorials run in sandbox — no real money moved

All Tutorials

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Build Your First ACH Transfer

Create bank accounts, initiate an ACH debit, understand pending and returned statuses, and handle the full lifecycle of a payment from initiation to settlement.

Beginner 15 min Node.js Python cURL

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Handle Webhook Retries Like a Pro

Set up a webhook endpoint, verify HMAC-SHA256 signatures, implement idempotency to prevent double processing, and handle retry logic with exponential backoff.

Intermediate 25 min Node.js Python

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Master Sandbox Testing with Return Codes

Use test account numbers to trigger specific ACH return codes, build a coverage plan for your test suite, and understand how to verify your error-handling paths.

Beginner 20 min cURL Node.js

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Authenticate Your API Integration Securely

Understand the difference between test and live keys, store secrets safely using environment variables, rotate keys without downtime, and restrict key permissions.

Beginner 10 min All Languages