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Blockchain Money Map Proof-of-Value Auditor
x402
Blockchain Money Map Proof-of-Value Auditor is a paid API for AI agents from api.blockchainmoneymap.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-27).
Audits an x402 agent API listing by comparing its stated promises, sample output, and buyer success criteria against reference facts to produce a proof-of-value verdict.
Price / call$0.01
Success—
StatusUnknown
How this service works
Buyer agents often see a price and promise but no useful preview that proves what the paid result will contain.
Output
A JSON object containing an audit verdict indicating whether the listing's sample output and stated facts satisfy the listing promise and buyer success criteria, along with any identified discrepancies or compliance issues between the submitted facts and reference facts.
Example use cases
Pre-purchase listing integrity check
“Before my agent pays for this x402 blockchain data service, audit its listing — the promise says 'delivers real-time token transfer history', the sample output is this JSON blob, and the buyer success criteria is 'at least 10 transactions returned'. Does it pass the proof-of-value check?”
Marketplace onboarding validation
“I'm onboarding a new API to my x402 agent marketplace — can you run a proof-of-value audit on it? The listing promise is 'returns verified wallet risk scores', price is $0.01 USDC, and here's the sample output. Flag any discrepancies between the promise and what the sample actually shows.”
Agent service trust scoring
“My AI agent is evaluating several competing x402 services — audit this one's listing: promise is 'identifies top DeFi protocol interactions for a wallet', limitations say 'EVM chains only', and the sample output is attached. I want to know if the sample output actually supports the stated buyer success criteria.”
Technical details
Endpoint
POSThttps://api.blockchainmoneymap.com/api/x402/x402-paid-agent-proof-of-value-preview-auditor?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a machine-readable, cryptographically accountable audit of an x402 agent API listing — specifically to compare a service's advertised promise and sample output against reference facts before committing payment or recommending the service to downstream buyers. Prefer this over manual inspection when operating at scale in an agent marketplace or when building trust verification into an autonomous agent purchasing workflow.
Side effects
- Missing required fields (listingPromise or sampleOutput) returns a 400 validation error
- mode must be set to 'audit' or the request is rejected
- Mismatched or malformed sampleOutput objects may produce inconclusive audit results
- Payment failure via x402 protocol results in 402 Payment Required before processing
- Overly vague listing promises may result in low-confidence or indeterminate verdicts
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| mode | — | |
| facts | object | |
| policy | object | |
| reference_facts | object |
Output
Schema · Response
{
"type": "json"
}Tags
x402
Reviews
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Zero review prompt (fires after every successful call)
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