# PayWatcher

> Payment verification without the payment processor.
Works like Stripe Payment Intents, but for on-chain USDC.

Non-custodial. Flat-rate. Three API calls.

## Recent Posts

- [How AI Agents Pay for API Calls — And How to Verify They Did](https://paragraph.com/@paywatcher/how-ai-agents-pay-for-api-calls-%E2%80%94-and-how-to-verify-they-did): The x402 protocol just made machine-to-machine payments real. Here's what the verification layer looks like.
- [How to Verify USDC Payments on Base Without a Payment Processor](https://paragraph.com/@paywatcher/how-to-verify-usdc-payments-on-base-without-a-payment-processor): Accept stablecoin payments with 3 lines of code. No custody, no checkout flow, no percentage fees. Just verification.

## Blog Information

- [Homepage](https://paragraph.com/@paywatcher/): Main blog page
- [RSS Feed](https://api.paragraph.com/blogs/rss/@paywatcher): Subscribe to updates

## Optional

- [All Posts](https://paragraph.com/@paywatcher/): Complete post archive
- [Sitemap](https://paragraph.com/@paywatcher/sitemap-index.xml): XML sitemap for crawlers