chainverdict.xyz publishes 19 machine-payable endpoints over the x402 protocol, priced from $0.001 to $0.1 per call. Each was probed directly; the response code below is what it returned.
| Endpoint | Method | Price | Probe |
|---|---|---|---|
| /v1/batch/validate | POST | $0.1 | 402 |
| /v1/data/activity/:addr | GET | $0.005 | 402 |
| /v1/data/block | GET | $0.001 | 402 |
| /v1/data/gas | GET | $0.002 | 402 |
| /v1/data/supply/:addr | GET | $0.003 | 402 |
| /v1/doc/diff | POST | $0.002 | 402 |
| /v1/doc/html-to-markdown | POST | $0.002 | 402 |
| /v1/security/email/:domain | GET | $0.01 | 402 |
| /v1/security/tls/:domain | GET | $0.01 | 402 |
| /v1/security/typosquat/:domain | GET | $0.005 | 402 |
| /v1/token/verdict/:address | GET | $0.01 | 402 |
| /v1/validate/bic/:bic | GET | $0.001 | 402 |
| /v1/validate/iban/:iban | GET | $0.001 | 402 |
| /v1/validate/isin/:isin | GET | $0.001 | 402 |
| /v1/validate/lei/:lei | GET | $0.002 | 402 |
| /v1/validate/vat/:vat | GET | $0.001 | 402 |
| /v1/verify/payment/:tx | GET | $0.02 | 402 |
| /v1/verify/token/:q | GET | $0.005 | 402 |
| /v1/wallet/dossier/:address | GET | $0.01 | 402 |
Validate up to 500 identifiers in a single call — IBAN, VAT, BIC, LEI and ISIN mixed freely. One payment instead of 500, for reconciliation and onboarding runs. Same structural scope as the individual…
Recent transfer activity for an ERC-20 on Base: transfer count and volume over the sampled window, for judging whether a token is actually in use. Live chain read.
Latest Base block: number, timestamp and hash. The cheapest call on the service — useful as a liveness and connectivity check.
Base gas price oracle: current gas cost on Base, base fee and priority fee in gwei, at a stated block height. For agents deciding whether to transact now or wait.
Total and circulating supply for an ERC-20 on Base, read live from chain with decimals applied and the block height returned.
Structured diff of two text blocks: per-line additions, deletions and changes, plus an identical flag. Use it to detect whether a contract, policy or spec changed between two fetches.
Convert an HTML document to clean Markdown for LLM ingestion: strips scripts, styles and navigation chrome, preserves headings, lists, tables and links. Deterministic for identical input.
Email-authentication posture for a domain: SPF record and policy, DMARC policy and alignment, DKIM selector presence. Use it to judge whether mail claiming to be from a counterparty can be trusted. Li…
Live TLS probe of a hostname: certificate validity and expiry, issuer, chain completeness, protocol and cipher. Confirms an endpoint you are about to send data to is actually serving a valid certifica…
Analyse a domain for brand impersonation: homoglyph substitution, character insertion and omission, TLD swaps and known-brand proximity. Returns a suspicion verdict with the specific patterns matched.…
Token safety check for an ERC-20 on Base: is this token a scam, a honeypot, or safe to hold? Examines ownership and mint authority, proxy upgradeability, liquidity and holder concentration, transfer-r…
Validate a BIC/SWIFT code against ISO 9362: 8 or 11 characters, bank and country segments, location and branch codes. Structural only; does not confirm the institution is reachable.
Validate an IBAN structurally: country length rules, character set and the ISO 7064 mod-97 check. Deterministic. A structurally valid IBAN is not proof the account exists, is open, or belongs to the p…
Validate an ISIN against ISO 6166: country prefix, 9-character NSIN and Luhn check digit. Structural only; does not confirm the instrument exists or is tradeable.
Validate a Legal Entity Identifier against ISO 17442: 20 characters, allowed character set and mod-97 check digits. Structural only — no GLEIF registry lookup, so it does not confirm the LEI is issued…
Validate an EU VAT number's structure and per-country check digits. Format only — no VIES lookup, so it does not confirm the registration is active or belongs to the named trader.
Verify a Base transaction actually did what a counterparty says it did: confirmation depth, success or revert, value, token, sender and recipient. Use it to confirm an inbound payment before releasing…
Resolve a token symbol or contract address to the canonical Base contract, so an agent swapping or accepting 'USDC' gets the real one. Catches lookalike and impostor contracts sharing a symbol.
Wallet risk profile for a Base address before you pay it or accept payment from it: EOA or contract, first and last seen, transaction and counterparty counts, contract-verification status, and any fla…