Money Agent – Validate x402 Purchase Before Paying

x402

Money Agent – Validate x402 Purchase Before Paying is a paid API for AI agents from money-agent-b4o0.onrender.com, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-15).

Evaluates whether a given x402-gated URL's payment terms fall within the buyer's price policy before committing to payment

Price / call$0.001

Seller volume →—

Success—

StatusUnknown

How this service works

Machine-payable financial data and autonomous-agent services over x402.

Output

Returns a JSON object with a 'decision' field ('BUY' or a rejection indicator) and a 'reason' string explaining whether the payment terms are within the buyer's configured price policy.

Example use cases

Budget guard for agent micropayments

“Before my agent pays for any x402 URL, I want you to check whether the payment terms are within my $0.005 USDC max price — run the validation on https://money-agent-b4o0.onrender.com/sec-filings and tell me if it's a buy or not.”

Policy enforcement for autonomous finance agent

“My autonomous agent is about to call a paywalled data endpoint at https://example-data.com/market-data — validate that the x402 price is under $0.002 USDC before it commits to the payment.”

Pre-flight check before accessing paywalled API

“I'm building a pipeline that calls x402-gated APIs automatically. Before hitting https://money-agent-b4o0.onrender.com/some-endpoint, validate whether the payment terms are reasonable given a max acceptable price of $0.003 USDC.”

Technical details

Endpoint

POSThttps://money-agent-b4o0.onrender.com/validate-x402-purchase-before-paying

When to prefer

Use this endpoint when an autonomous agent needs a policy gate before committing to any x402 micropayment — especially in agentic pipelines where you want human-defined budget guardrails enforced programmatically before spending USDC. Prefer this over directly paying if you want to avoid overspending on machine-payable APIs or need an auditable pre-authorization step.

Side effects

URL is unreachable or not an x402 endpoint — unclear payment terms cannot be evaluated
maxPrice is zero or missing — policy check may default to rejection
URL returns unexpected or non-402 response — decision may be indeterminate
Network timeout on the target URL — validation fails with no decision
Price terms exceed maxPrice — returns a rejection decision with reason

Input

Schema · Request body

Field	Type	Description
url	string
maxPrice	number

Output

Schema · Response

{
  "type": "json",
  "example": {
    "reason": "Payment terms are within buyer policy.",
    "decision": "BUY"
  }
}

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Example use cases

Budget guard for agent micropayments

Policy enforcement for autonomous finance agent

“My autonomous agent is about to call a paywalled data endpoint at https://example-data.com/market-data — validate that the x402 price is under $0.002 USDC before it commits to the payment.”

Pre-flight check before accessing paywalled API

Technical details

Endpoint

POSThttps://money-agent-b4o0.onrender.com/validate-x402-purchase-before-paying

When to prefer

Side effects

URL is unreachable or not an x402 endpoint — unclear payment terms cannot be evaluated
maxPrice is zero or missing — policy check may default to rejection
URL returns unexpected or non-402 response — decision may be indeterminate
Network timeout on the target URL — validation fails with no decision
Price terms exceed maxPrice — returns a rejection decision with reason

Input

Schema · Request body

Field	Type	Description
url	string
maxPrice	number

Output

Schema · Response

{
  "type": "json",
  "example": {
    "reason": "Payment terms are within buyer policy.",
    "decision": "BUY"
  }
}