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Blockchain Money Map – Agent Rendered Checkout UI Diff
x402
Blockchain Money Map – Agent Rendered Checkout UI Diff is a paid API for AI agents from api.blockchainmoneymap.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-15).
Compares two checkout UI snapshots (facts vs reference_facts) to detect discrepancies between what a seller charges and what is rendered to a buyer, flagging hidden fees or line-item mismatches.
Price / call$0.01
Success—
StatusUnknown
How this service works
Choose Blockchain Money Map for human-readable public blockchain reports or x402-paid agent API services.
Output
A JSON diff report indicating whether the seller-declared checkout facts match the rendered buyer-facing checkout, including discrepancies in total amounts, individual line items, fulfillment methods, currency, and whether hidden fees are present. Returns structured comparison results highlighting any mismatches between the two snapshots.
Example use cases
Hidden fee detection before payment
“Before I approve this crypto checkout, compare the seller's declared total of $120.00 with the rendered total of $134.50 in USDC and tell me if any hidden fees or undisclosed line items are causing the difference.”
Checkout UI integrity audit for marketplace
“I need to audit our marketplace checkout — compare the seller line items and $89.99 total against what's actually rendered to the buyer at $89.99 in USDC and confirm they match, including fulfillment methods.”
Regression check between two checkout versions
“We just updated our checkout UI — compare the current snapshot showing $55.00 in USDC with our reference snapshot from last week at $55.00 and tell me if any line items or fulfillment methods changed between the two versions.”
Technical details
Endpoint
POSThttps://api.blockchainmoneymap.com/api/x402/x402-agent-rendered-checkout-ui-diffWhen to prefer
Choose this endpoint when an AI agent needs to programmatically verify checkout UI integrity in an x402 payment flow — specifically to detect hidden fees, price inflation, or line-item mismatches between what a seller declares and what a buyer sees. Prefer this over manual inspection when automating consumer-protection checks in blockchain checkout pipelines or when regression-testing checkout UI changes.
Side effects
- Missing required facts fields (seller_total_amount, rendered_total_amount, seller_line_items, rendered_line_items, currency) returns validation error
- mode must be set to 'compare' — any other value rejected
- Mismatched currency between facts and reference_facts may produce misleading diff
- Line item arrays exceeding 50 items are truncated
- Payment not received via x402 returns 402 Payment Required
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| mode | — | |
| facts | object | |
| policy | object | |
| reference_facts | object |
Output
Schema · Response
{
"type": "json"
}Tags
x402
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