/ DEMOWebMCPWebMCP not detected

Check a cart against a signed trace

This page registers kya_validate_trace and kya_verify_agent. Inspect the Ed25519-signed trace in the browser, then send the cart to the demo merchant adapter. It returns accept, review, or decline. Nothing is charged.

/ 01Cart

Select items

Signed limit $500.00. Review starts at $400.00.

Cart totalExpected accept$129.00

/ 02Preflight

Run the checks

Chrome 149+ with the WebMCP testing flag, or ChatGPT's in-app browser, can call the tools directly. Otherwise use the buttons.

Agent prompt

Inspect the current signed trace and cart. Run kya_validate_trace, then run kya_verify_agent with cart_ref demo-cart-001 and wallet_ref demo-wallet-001. Do not create a checkout session unless the preflight decision is accept.

Audience

https://knowyouragent.xyz

Scope

purchase

Limit

$500.00

Cart

demo-cart-001

Wallet

demo-wallet-001

Trace

Signed and loaded

WebMCP

Registers the page tools so a browser agent can call them with a structured schema.

Signed trace

Ed25519 JWT with audience, purchase scope, expiry, and a $500 spending limit.

Merchant adapter

Re-checks the request before a session. This demo does not capture payment.