All projects on Base matching “replay”

Diagnose a public x402 origin with 25 linter and 14 compliance checks, plus six separate request-example/schema and challenge consistency diagnostics. Use quote_mode fast for an immediate 402, resend unchanged input with one payment proof, then poll using the returned capability. Successful reports are stored before settlement. Examples are checked offline, never replayed; unsupported schemas stay

Payment security firewall scan for an OUTGOING x402 payment: PII/secret leak detection in payment metadata, nonce replay detection, overpayment detection, prompt-injection-triggered payment analysis (fast + deep tiers), canonical-USDC asset verification, merchant pinning, velocity/spend caps, and counterparty reputation cross-check. Returns allow/flag/block with per-check reasons and an Ed25519-si

Premium alpha — Curated on-chain alpha: yield venues, mempool anomalies, and replayable agent trade intents.

Rule-based multi-label text classification over a fixed taxonomy (urgency, financial_promise, credential_request, crypto_mention, cta, legal_offer, medical_claim, seo_spam, url_shortener, press_release, question, has_contact). Deterministic - identical text always yields identical labels.

Is this x402 seller real? One seller's report card before you pay them: what they sell, price, rank of all sellers, rivals, and from the chain who actually pays it on Base: payer wallets, how concentrated they are, how many came back on 2 or more days, and how many of its payers are wide samplers that paid 30+ sellers (not shoppers). Dated, with the evidence behind each fact. $0.001 a call. Refusa