Payee Screening
Screen a payee wallet or name against the OFAC SDN list and check a merchant domain’s age and DNS before payment.
0.01 USDC per screen; spending-rule preflight is 0.02 USDC.
Choose the check your payment needs.
SpendPreflight — trust and verification tools for stablecoin payments, built for AI agents and the people who run them.
Free developer checks, paid observations and monitoring. Each product explains its evidence, price and limits before you use it.
Listing Guard
Check public x402 discovery metadata with an unpaid CDP technical validation and inspect heuristic listing-risk flags and suggested rewrites.
0.05 USDC per detailed check.
Seller Monitoring
Monitor public x402 endpoint availability and best-effort daily listing-risk and confirmed index-removal observations, with opt-in email alerts.
Basic: 9 USDC / 31 days, hourly, one endpoint. Pro: 19 USDC / 31 days, every five minutes, up to three endpoints. Manual renewal.
Token Safety
Observe dated Base contract signals, OFAC address matches and bounded public verification facts before deciding what further review is needed.
Basic: 0.02 USDC. Deep: 0.05 USDC.
Payment Receipts
Find a native Base USDC transfer and return payer, payee, exact amount, time, block, confirmations and OFAC flags in signed JSON with a printable page.
0.01 USDC per receipt. No free trial.
Wallet Statements
Export native Base USDC transfers with exact running balances, counterparties and OFAC flags as CSV or JSON for a selected past date range.
0.05 USDC per export. No free trial.
x402 Lint + Action
Inspect an unpaid public x402 challenge and heuristic listing score in the browser, API or GitHub CI. Reuse seven-day report snapshots in README badges.
Free, subject to public-check quotas, robots rules and host pacing.
Delisting Tracker
Read anonymous aggregate Bazaar index-status observations and public-description wording patterns with explicit sample dates, denominators and unknowns.
Free.
Data APIs
Use cached endpoint observations, historical FillPoint station proximity and an off-grid solar energy-balance calculator with explicit provenance and limits.
Cached endpoint check: 0.005 USDC. Archived station query: 0.01 USDC. Solar estimate: 0.02 USDC. Complete dated station projection is free under ODbL.