#PayWatcher
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paywatcher.bsky.social
We just shipped PayWatcher — payment verification for USDC on Base.

$0.05 flat. Non-custodial. You keep 100%.

Live now → paywatcher.dev

Looking for devs building on Base who accept USDC. Free tier available.

#BuildOnBase #Base #USDC #Stablecoins #Web3 #DevTools #Payments
PayWatcher — Stablecoin Payment Verification API
Verify USDC payments without custody. $0.05 per verification, non-custodial, built for developers.
paywatcher.dev
February 21, 2026 at 7:35 PM
paywatcher.bsky.social
Most payment processors charge a % of every USDC transfer. That makes no sense.

You don't need a middleman — you just need to know the payment arrived.

#x402 #stablecoins #Base #PayWatcher

paragraph.com/@paywatcher/...
Why Payment Verification Should Be Separate from Payment Processing
When developers need to accept USDC payments, they reach for a payment processor. Coinbase Commerce. Stripe Crypto. Request Network. These products handle the full stack: checkout UI, custody, settlem...
paragraph.com
April 13, 2026 at 5:06 AM
paywatcher.bsky.social
New article: building x402-native AI agents with Coinbase AgentKit + PayWatcher.

AgentKit + x402 + PayWatcher = autonomous USDC payment verification in ~20 lines. No API key, testnet-first.

paragraph.com/@paywatcher/...

#AgentKit #x402 #Base #buildingInPublic #coinbase
Building x402-Native AI Agents with Coinbase AgentKit + PayWatcher
How to build an AI agent that sends and verifies USDC payments autonomously — no API keys, no custodians, no manual steps.
paragraph.com
April 16, 2026 at 1:55 PM
semp-re.bsky.social
Built USDC payment verification in production on Base.

No % cut. No custody. $0.05 flat per verification.

x402 native — AI agents can verify payments without an API key.

Full Story:
paragraph.com/@paywatcher/...

#Base #x402 #stablecoins #buildingInPublic
Building PayWatcher: x402-native USDC Payment Verification on Base
We've been quietly shipping for the past few months. Here's what PayWatcher is and why we built it on Base.
paragraph.com
April 13, 2026 at 5:50 AM
paywatcher.bsky.social
PayWatcher MCP Server is live.

AI agents can verify USDC payments on Base directly from their workflow. No API key, no account — x402 payment is the authentication.

api.paywatcher.dev/mcp
docs: paywatcher.dev/docs/mcp-ser...

#x402 #MCP #Base #stablecoins #buildingInPublic
April 14, 2026 at 1:16 PM
paywatcher.bsky.social
How to Verify USDC Payments on Base Without a Payment Processor paragraph.com/@paywatcher/...

#web3 #stablecoins #dev #crypto
How to Verify USDC Payments on Base Without a Payment Processor
The Problem Nobody Talks AboutYou want to accept a $10,000 USDC payment. You have two options: Option A: Integrate a payment processor like Coinbase Commerce. Set up an account, embed their checkout w...
paragraph.com
February 22, 2026 at 7:29 AM
semp-re.bsky.social
@x402.bsky.social is the protocol that makes AI agent payments real.
Agent → 402 → pays #USDC → access granted.
The #verification step is the hard part nobody has solved cleanly yet.
Built it. $0.05 flat, webhook, non-custodial, Base-native.
Full breakdown with code → paragraph.com/@paywatcher/...
How AI Agents Pay for API Calls — And How to Verify They Did
HTTP has had a status code sitting unused for 30 years. 402: Payment Required. It was reserved for a future where machines could pay for things directly. That future is here. Stripe and Coinbase are b...
paragraph.com
March 17, 2026 at 2:56 PM
flarestart.bsky.social
PayWatcher is Live
via Dev.to

https://flarestart.com/article/paywatcher-is-live-20260221
#DevNews #MachineLearning #Tutorial
PayWatcher is Live
We just shipped PayWatcher — payment verification for USDC on Base. The problem: verify a $10k stablecoin payment and you either pay $100 to a processor or build your own blockchain listener from...
flarestart.com
February 21, 2026 at 7:39 PM