checkout402_ TEST MODE

This is a test version of this checkout. You can try everything here and no real money moves — payments are simulated. The seller hasn't opened this for real payment yet.

Demo: Weather API, 100-call pack

Sold by checkout402 demo since 2026

A test-mode checkout: pay it with any wallet or via the x402 flow shown below. No real funds move.

Input
{
  "pack_size": "integer"
}
Returns
{
  "api_key": "string",
  "calls": "integer"
}
Example response
{
  "api_key": "wx_demo_k3y",
  "calls": 100
}
Constraints
Test mode only. No real funds move.

4.20 USDC

Stored data

A fixed payload the seller has already written. The same bytes every time, delivered the moment payment settles.

Fetch it again any time. You already paid for it.

Seller price4.20 USDC
Protocol fee0.031 USDC
Total4.231 USDC

The protocol fee covers recording the payment on the public network. It is part of the total shown before anyone pays.

Payable on 1 network
Base 4.231 USDC
Give this link to your agent

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_WcxUwXTMWSZu31J6

Click it once to select the whole link.

Or buy it yourself, from a terminal
1 See what it costs, without paying
curl -H 'Accept: application/json' https://api.checkout402.com/c/chk_WcxUwXTMWSZu31J6
2 Pay it
pip install "pay402[evm]"
pay402 https://api.checkout402.com/c/chk_WcxUwXTMWSZu31J6 --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_WcxUwXTMWSZu31J6/prepare. We never hold a key and never sign on your behalf.

Your purchase is delivered the moment payment settles. The guarantees, in full.