SOLUTIONS

Support x402 in YourAPIs

Instantly

Add native payment support to your APIs in minutes. Accept crypto payments from developers and AI agents without building payment infrastructure.

Add x402 payment support to your API with a single middleware. Works with Express, FastAPI, Go, and all major frameworks.

Payments happen within the HTTP request/response cycle. No redirects, no webhooks to manage—just seamless pay-per-use access.

AI agents can autonomously pay for your API. Tap into the growing economy of autonomous systems that need programmatic payment rails.

Charge per request, per token, per second of compute, or any custom metric. Define pricing that matches your cost structure.

Receive funds immediately when requests complete. No 30-day invoice cycles or payment disputes—blockchain finality is your receipt.

Skip Stripe integration, PCI compliance, and payment processing headaches. We handle all the complexity so you can focus on your API.

Accept payments from anyone with a crypto wallet. No country restrictions, no currency conversion, no banking requirements.

Track your API revenue in real-time. See which endpoints generate the most income and optimize your pricing strategy.

This solution is built on our core product suite

Our battle-tested facilitator handles all x402 protocol complexity—payment verification, settlement, and dispute resolution built-in.

Route traffic through our proxy to instantly add payment capabilities without code changes. Perfect for legacy APIs and quick launches.

Join teams using Waterfall to simplify their API spend management and unlock new possibilities.