Do ScriptMasterLabs x402 agent jobs return clear live prices before payment?
Yes. At 17:46:20 UTC on 6 September 2026, six production jobs were called without a PAYMENT-SIGNATURE. All six returned HTTP 402 plus PAYMENT-REQUIRED, on Base mainnet with USDC and the same canonical payTo wallet. The live amounts matched the displayed prices for all six jobs.
What was measured?
The audit intentionally stopped before authorization. No payment signature was sent, no settlement was attempted, and the result is not counted as a buyer or revenue event.
| Job | Live price | Result |
|---|---|---|
| URL to Markdown | 0.001 USDC | MATCH |
| Structured Web Extract | 0.005 USDC | MATCH |
| FX Convert | 0.001 USDC | MATCH |
| Web Research | 0.003 USDC | MATCH |
| Domain Enrich | 0.005 USDC | MATCH |
| Provider Marketplace Listing | 0.01 USDC | MATCH |
What payment authority was observed?
Network: eip155:8453 (Base mainnet)
Asset: USDC 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
payTo: 0xc29185fa176357612f3194735753e520e91adc46
How can an agent reproduce this?
Call a paid endpoint without PAYMENT-SIGNATURE. Inspect the fresh PAYMENT-REQUIRED challenge. Verify amount, network, asset and payTo before deciding whether to spend. The fresh challenge is always more authoritative than this dated evidence record.
Truth boundary
This evidence proves no-spend challenge consistency at the measurement time. It does not prove a stranger purchase, settlement, revenue, search ranking, external citation or future price.
Machine-readable JSON → · URL to Markdown → · Web Research →