Block x402 REST usage
Latest Base block: number, timestamp and hash. The cheapest call on the service — useful as a liveness and connectivity check.
0.001 USDC per call
per call
chainverdict.xyz
chainverdict.xyz · 17 listed services · provider site
%3Aaddr x402 REST usage
Native ETH and ERC-20 token balances for a Base address in one call, read live from chain at a stated block height.
0.004 USDC per call
per call
Gas x402 REST usage
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.
0.002 USDC per call
per call
%3Aiban x402 REST usage
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 party you are paying.
0.001 USDC per call
per call
:address x402 REST usage
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-restriction patterns....
0.01 USDC per call
per call
Html to markdown x402 REST usage
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.
0.002 USDC per call
per call
Diff x402 REST usage
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.
0.002 USDC per call
per call
:isin x402 REST usage
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.
0.001 USDC per call
per call
:domain x402 REST usage
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. Live DNS.
0.01 USDC per call
per call
:vat x402 REST usage
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.
0.001 USDC per call
per call
Validate x402 REST usage
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 validators.
0.1 USDC per call
per call
:tx x402 REST usage
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 goods or data.
0.02 USDC per call
per call
:q x402 REST usage
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.
0.005 USDC per call
per call
:addr x402 REST usage
Native ETH and ERC-20 token balances for a Base address in one call, read live from chain at a stated block height.
0.004 USDC per call
per call
:bic x402 REST usage
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.
0.001 USDC per call
per call
:lei x402 REST usage
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 or active.
0.002 USDC per call
per call
:iban x402 REST usage
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 party you are paying.
0.001 USDC per call
per call
Provider identity is derived from the domain or repository in the source record. If two vendors share a host, they appear together here — that is a limitation of the data, not a statement about ownership.