Want to try it first? Open the test version — same product, simulated payment, no real money.
The complete swiss9/launchbase-business-storefront snapshot at main, as tar.gz (base64 in the response). Browse the tree free on the gitbuyer page before you buy.
49.00 USDC
We call the seller's endpoint after payment settles and hand you back exactly what it returns. Fresh on every call.
One purchase buys 3 calls.
The protocol fee covers recording the payment on the public network. It is part of the total shown before anyone pays.
Paste it into Claude, or any agent that speaks x402 (the open standard for agent payments). The agent reads the price, pays from its own wallet and brings back the goods in one round trip. There is no account to make and no key to give anyone.
https://api.checkout402.com/c/chk_Z8A_2zsW1dYuhvYN
Click it once to select the whole link.
curl -H 'Accept: application/json' https://api.checkout402.com/c/chk_Z8A_2zsW1dYuhvYN
pip install "pay402[evm]" pay402 https://api.checkout402.com/c/chk_Z8A_2zsW1dYuhvYN --key $YOUR_PRIVATE_KEY --max-usd 1.00
What that command is: pay402 is the open buyer client for 402 checkouts — docs, source and every release at pay402.sh.
Or sign the accepts[] entry yourself and
retry with an X-PAYMENT header. Exact typed data:
POST https://api.checkout402.com/c/chk_Z8A_2zsW1dYuhvYN/prepare. We never hold a key and
never sign on your behalf.
You are never charged for a failed delivery. The money moves only after delivery succeeds. The guarantees, in full.