GET/x402/audit Audit an x402 seller origin as indexers see it: reads /openapi.json, flags missing x-payment-info, examples and apiKey-modelled payment; probes up to 12 paid routes unpaid with your own examples (valid 402? oversized header? description over CDP limit?); lists paid routes the CDP Bazaar has not indexed. Nothing is paid to the audited origin. | — | — | $0.02 |
GET/tx/explain Why did my transaction fail? Give a chain and tx hash; get status, decoded method, gas used vs limit, fee, token transfers, events and, for failed transactions, the decoded revert reason (Error(string), Panic codes, custom errors resolved by signature) with a plain-language fix. Pending transactions get a stuck-transaction diagnosis (nonce gap, underpriced fee) and the replace/cancel recipe. Chains: ethereum, base, arbitrum, optimism, polygon, bsc. | — | — | $0.01 |
GET/domain/lookup Look up a domain before trusting it: registrar, creation date and age in days, expiry, status flags and nameservers from RDAP, plus A/AAAA/MX/CAA records and email authentication (SPF, DMARC policy). Flags young domains (under 30 days), near expiry, missing SPF/DMARC and p=none. Useful for phishing and vendor checks, outreach hygiene and incident triage. | — | — | $0.005 |
GET/evm/address What is this address? For Ethereum, Base, Arbitrum, Optimism, Polygon and BSC: whether it is an EOA, a contract or an EIP-7702 delegated EOA (with the delegate), native balance, transaction count and whether it is active. Check before sending funds: plain 21,000-gas ETH sends to EIP-7702 delegated accounts fail. | — | — | $0.005 |
GET/fetch Fetch any public web page and get clean readable text (scripts, styles and navigation stripped, headings kept), title, meta description, canonical URL and the first 40 links. Optional maxChars (1000-50000, default 20000). Follows redirects; JSON and plain text are returned as-is. | — | — | $0.005 |
GET/site/check Is this website up? Checks HTTP status, redirect chain, response time, TLS certificate validity and days to expiry, security headers, page title and MX records, and returns a verdict (healthy / degraded / down) with a list of problems. Use for uptime checks, vendor due diligence and incident triage. | — | — | $0.005 |
GET/x402/preflight Check any x402 paid endpoint before paying it: does it return a valid 402 challenge, which networks/tokens/prices it accepts (decoded to USD), whether amounts are valid atomic units, payTo sanity, testnet-only offers, missing Bazaar input schema, redirects and latency. Returns a verdict (payable / payable with warnings / broken / unreachable) and the exact problems. Useful for agents choosing between paid APIs and for sellers debugging why x402scan or the CDP Bazaar skipped their route. | — | — | $0.005 |