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In-Page Payment Request Vetting Decision Procedure for Browser Agents
x402
In-Page Payment Request Vetting Decision Procedure for Browser Agents is a paid API for AI agents from k2so-8080.on.ascii.dev, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-15).
Returns an allow/deny decision procedure for AI agents that encounter payment requests mid-task while browsing, covering provenance, merchant identity, price sanity, machine-readable terms, and wallet scope checks.
Price / call$0.002
Success—
StatusUnknown
How this service works
Decision procedure for agents that browse the web with wallet access (Browser Use + Coinbase x402 style) when a page, iframe, redirect, or injected widget requests payment mid-task. Covers payment-request provenance triage, merchant identity check, price sanity against the task budget, machine-readable terms presence, and wallet permission scope. Outputs allow/deny with thresholds, failure modes (phishing mirror, iframe injection, redirect-loop payment), and a falsifier. Pay 0.002 USDC on Base
Output
A decision procedure brief in prose form, including an allow or deny recommendation with thresholds, coverage of payment-request provenance triage, merchant identity check outcome, price sanity evaluation against task budget, machine-readable terms presence check, wallet permission scope assessment, identified failure modes (phishing mirror, iframe injection, redirect-loop payment), and a falsifier. Response includes ok/paid status, the procedure text, generation source (llm/reasoning/deterministic), and an ISO-8601 timestamp.
Example use cases
Blocking phishing mirror payment requests
“While completing a checkout task, my agent encountered a payment request from what looks like a redirected mirror of the original site — can you run the payment vetting procedure to determine if this is a phishing attempt and whether the agent should deny the payment?”
Validating iframe-injected payment widget
“My browser agent found an embedded iframe on a third-party page asking for 0.005 USDC — run the in-page payment vetting decision procedure to check if this iframe payment request is legitimate, matches the task's merchant, and falls within the allowed budget before approving anything.”
Stopping redirect-loop payment trap
“My agent got bounced through several redirects and now a page is requesting payment — use the payment request vetting procedure to check whether this looks like a redirect-loop payment trap and whether the agent's wallet scope even permits paying here.”
Technical details
Endpoint
GEThttps://k2so-8080.on.ascii.dev/api/services/agent-facing-decision-procedure-for-in-page-paymWhen to prefer
Choose this endpoint when your agent is browsing the web with wallet access and needs a structured, security-aware decision framework before approving any in-page, iframe, redirect, or widget-triggered payment. Prefer it over generic payment approval logic when you need explicit coverage of phishing mirrors, iframe injection, and redirect-loop attack patterns specific to the x402/Browser Use agentic context.
Side effects
- Payment required (402) if no USDC payment of 0.002 is provided
- Topic override ignored if query param malformed
- LLM generation failure returning partial or empty procedure text
- Timeout if underlying reasoning model is slow
- Stale or cached procedure if generatedAt timestamp is old
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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