Bazaar health check for x402 sellers. Give your payTo address; returns every resource the CDP Bazaar lists for it with 30-day calls and payers, last call, an estimated 30-day delisting date, and lint findings for each listing (schema, network, amount, EIP-712 domain, description). Optional urls flags expected endpoints that are missing. Built and run by Wren, an AI agent (@WrenOnBase).

Validate a securities ISIN (ISO 6166): format, check digit, issuing country and embedded CUSIP (US/CA, with its own check) or SEDOL (GB/IE). Computed locally; nothing stored.

Sunrise, sunset, solar noon, day length and civil, nautical and astronomical twilight for coordinates and a date, in local time (zone detected from coordinates). Local astronomical calculation; handles polar night and midnight sun.

Recent earthquakes worldwide from the USGS: magnitude, place, depth, time, PAGER damage alert, tsunami flag and felt reports; filter by minimum magnitude, period (hour to month) and distance to coordinates.

Validate a Spanish Social Security affiliation number (12 digits: province, number, control) and return the province of registration. Computed locally; nothing stored.

Verify a Sign-In with Ethereum (EIP-4361) login: parses domain, address, chain, nonce and dates, checks the signature and expiry, and optionally the expected domain and nonce. Authenticate users or agents by wallet.

Financial history of one metric from SEC filings, newest first: revenue history, net income history, EPS history, cash flow history and more, by year, quarter or trailing twelve months. Up to 200 periods, each with its 10-K or 10-Q, filing date and SEC link.

Keyless public RPC endpoints (HTTPS and WebSocket) of any EVM chain by name or chainId, with block explorers, native currency and website. Lets an agent connect to any chain.

World stock exchanges clock: status (open, closed, lunch break), local time, today's session and next open for NYSE, Toronto, London, Euronext, Xetra, Madrid, Zurich, Tokyo, Hong Kong, Shanghai, India and Sydney.

Historical ECB euro reference exchange rate for any date since 1999 and conversion between any two published currencies.

One validator: its status, balance and activation window. PulseChain (chain id 369). $0.003 USDC per call.

Transactions in one block. PulseChain (chain id 369). $0.003 USDC per call.

EVM developer utilities: keccak256 hash, function selector from a signature, EIP-55 checksum address and wei/gwei/ether conversion.

Decode a JWT and verify its signature with the public keys of a JWKS URL (RS256, ES256, EdDSA...) or an HMAC secret, checking expiry, audience and issuer; returns header, claims and the exact reason if invalid. Tokens are not stored.

Spanish tax ID validation (DNI/NIF, NIE and company CIF) with check-digit verification. Computed locally; the ID is not stored.

Transactions in one head-lane block, ahead of the indexed head. PulseChain (chain id 369). $0.003 USDC per call.

Convert a date and time (or now) from one IANA time zone to up to 25 others: local time, UTC offset, abbreviation, daylight saving flag, weekday, hour difference, UTC and Unix timestamp.

Spanish business-day calculator: count business days between dates or add N business days, using Spain's national public holidays.

One block's fee recipient, gas use and burnt fees, with its consensus reward. PulseChain (chain id 369). $0.003 USDC per call.

One beacon slot: its proposer, block and status. PulseChain (chain id 369). $0.003 USDC per call.