SiteCheck

Book lookup by ISBN (checked before the call) or by title and/or author: title, subtitle, authors, publishers, first publish year, median page count, ISBN-10 and ISBN-13 of the matching edition, languages, subjects, cover image URL, and the Open Library work and Wikidata ids. Data from Open Library (CC0). A title with no match is a 404, not charged. Up to 20 results.

Total value locked by chain from DefiLlama, largest first, with each chain's token, chain id and stablecoin market cap. With chain, that chain's own row and its TVL change over 1, 7 and 30 days from DefiLlama's daily history. Data: DefiLlama. Information only, not financial advice.

Whether a contract's source is verified on Sourcify (exact or partial match), with its name, compiler version, license, and the functions and events from its ABI. A contract without verified source is answered with verified false, not an error. Chains: base (default), ethereum, arbitrum, optimism, polygon. Read-only.

For eleven AI crawlers (GPTBot, ClaudeBot, PerplexityBot, Google-Extended and others): allowed or blocked for the page's path under robots.txt, plus the noai and noimageai opt-outs in meta and X-Robots-Tag, and whether llms.txt exists. Reads the page as static HTML; no JavaScript runs.

Total value locked in DeFi from DefiLlama. For a protocol (its slug, e.g. aave-v3) the current TVL; for a chain (Base, Ethereum...) its TVL with 1-day and 7-day changes. A protocol's history is too large to read here, so it has no change figures. Attribution: Data: DefiLlama. Information only, not financial advice.

Native balance, nonce and account type of an EVM address on Base (default), Ethereum, Arbitrum, Optimism or Polygon: a wallet, a contract, or an EIP-7702 delegated wallet with its delegate. On Ethereum also the ENS primary name, when it resolves back to the address. Read over public RPC.

DeFi yield pools from DefiLlama with at least $1M TVL, sorted by APY and filtered by chain, project or symbol (max 50). APY is DefiLlama's estimate, split into base and reward; reward APYs are often temporary. Attribution: Data: DefiLlama. Information only, not financial advice.

ERC-20 allowance an owner has granted a spender for one token: raw and human amount, with the token's symbol and decimals. unlimited is true when the allowance is at least 2^255, the usual approve-everything value. Read-only.

Checks up to 10 UK EORI numbers (GB or XI followed by 12 or 15 digits) with HMRC's public check: valid or not, with the processing date. HMRC does not publish the trader's name in this check, so it is null. An HMRC outage is a 503, not charged, never 'invalid'. EU EORI numbers are refused with a 400 in this version.

A Bitcoin mainnet address: confirmed and unconfirmed balance in BTC and USD, transaction count, funded and spent totals, and its last 10 transactions with the net change for the address. Mainnet bech32 and legacy addresses only. Source: mempool.space. Information only, not financial advice.

ERC-20 balance of an address for one token contract on a chain: token name, symbol, decimals, raw and human amount, and a USD value when Coinbase has a spot price for the symbol. Only the token you name is read; the native balance is in /api/evm/address.

Latest crypto headlines from the RSS feeds of CoinDesk, Cointelegraph, Decrypt, The Block and Bitcoin Magazine, newest first: title, link, publisher, publish time, the coins named in the text, and at most 200 characters of the feed's own summary. Filter by words in the text (q) or by coin. Feeds are cached 5 minutes; a feed that fails is listed in unavailable. Headlines and links only, not the art

Splits a free-text postal address into house number, street, unit, postcode, city, district, region and country, with a normalised one-line form. The postcode is checked against the rule of the country (for 18 countries); a mismatch is left out and says so. Workers AI does the split, so check the parts. geocode=1 adds coordinates from OpenStreetMap Nominatim.

Clinical trials from ClinicalTrials.gov matching words, optionally by status and phase: NCT id, title, status, phases, conditions, sponsor, start and completion dates, enrolment, number of locations and the study link. Information only, not medical advice.

Generates lookalike domains of a brand (omission, transposition, repetition, bit-flip, homoglyph, vowel swap, hyphenation, TLD swap; technique list after dnstwist), checks up to 30 of them in DNS (A records), and reads MX records for up to 8 that resolve. Resolving in DNS is not proof of registration or abuse.

A DEX's trading volume for 24 hours, 7 days and 30 days, with the change over the last day and the chains it trades on. Attribution: Data: DefiLlama. Information only, not financial advice.

Macro indicators for any country from the World Bank (CC BY 4.0): GDP, GDP growth, GDP per capita, inflation (CPI), unemployment, population, current account, government debt and lending interest rate, with the year, value and unit of each. Country by ISO2 or ISO3 code or exact name; indicator by friendly name or a raw World Bank code. Values lag by one to two years; years with no published value

OHLCV candles for a Coinbase trading pair (BTC-USD) at 1m, 5m, 15m, 1h, 6h or 1d granularity, up to 300, newest first, from Coinbase Exchange public market data. Prices are that venue's trades only. Information only, not financial advice.

Fetches decentralized exchange (DEX) liquidity pools for a token or pair across chains via DexScreener (with GeckoTerminal fallback). Returns chain, DEX name, pair address, base/quote tokens, USD price, liquidity, 24h volume, 24h transaction count, price change percentages, and pool creation age. Limit up to 30 pools. Information only, not financial advice.

A level-2 order book snapshot for a Coinbase pair: best bid and ask, mid price, spread in price and basis points, and the top bids and asks up to depth 50. It is a snapshot, not a quote: prices move between calls. Information only, not financial advice.

Finds token contract addresses by symbol or name across chains using DexScreener search and verified lists. Returns matching tokens with chain, contract address, symbol, name, liquidity of largest pool, and verified list membership. Limit up to 25. Information only, not financial advice.

USD spot prices for up to 20 symbols (BTC, ETH, SOL...) from Coinbase, with the source of each price. A Solana mint address also works and is priced by Jupiter. Symbols without a price are listed in unavailable. Cached 15 seconds. Information only, not financial advice.

Weather for a place or a coordinate: current conditions, the next 48 hours and 7 days (temperature, precipitation, wind, symbol). Forecast from MET Norway, cached until its own expiry time. Attribution: Data from MET Norway (CC BY 4.0).

Who owns an IP address: network name, CIDR, owner, abuse contact (RDAP), ASN and holder (RIPEstat), and reverse DNS. Private, reserved and documentation addresses are refused with 400. Public registry data only.

Website technology detection: CMS, e-commerce platform, analytics, tag managers, CDN, hosting, chat, payments, A/B testing, consent tools and the e-mail provider, each with version, confidence 0-100 and evidence, from 231 own fingerprints over the home page, headers, cookies and the domain's MX/TXT records. For lead filtering and competitor research.

US product recalls in one schema from openFDA enforcement reports (food, drug, device) and CPSC: date, product, firm, reason, FDA Class I/II/III mapped to high/medium/low (CPSC severity is derived from the hazard text), distribution and states, and the official link. Filter by keyword, since date (default 30 days), source and classification; up to 100 rows.

Wayback Machine snapshots of a public URL: the capture closest to a date, the list of captures in a date range (one per day, max 500), first and last capture, and mode=diff, which compares the latest snapshot's text with the live page (added and removed lines, max 200 each). Diff is line-based and does not parse JavaScript-rendered pages.

UK company insolvency notices (administrations, liquidations, winding-up petitions) from The Gazette, via our nightly cache of the last 8 days. Filter by company name or number, postcode prefix, notice type and date. Returns company, number, notice type, date, nature of business, postcode and notice link, with the cache timestamp and any missing days; up to 10 rows can add Companies House status,

Search the current Hacker News 'Who is hiring?' thread: companies hiring, filtered by keywords and remote, with contact emails and links.

US workplace and environmental enforcement cases by company, state and date: OSHA inspections with penalties (US Department of Labor API) and EPA enforcement cases (EPA ECHO), each with the official record link. Filters: company, state, since, minPenalty, source. OSHA is included only when the deployment has a DOL key; the answer says so otherwise. Public records matched by name, not a finding of

The latest Form 4 insider transactions of a US company (ticker, CIK or name): insider name and role, transaction date, code (P buy, S sell, A grant, M exercise, F tax withholding), shares, price and shares owned afterwards, with the filing link. Common-stock lines only; derivative grants are not listed.

Issues or pull requests of a GitHub repository, searched by words and state (open, closed or all), newest updated first: number, title, state, labels, author, comments, dates and link. Needs the GITHUB_TOKEN secret; without it the call answers 503 and is not charged.

Hyperliquid perpetual futures: mark and oracle price, hourly and annualised funding, open interest in coins and USD, 24 h volume and maximum leverage, sorted by volume. With coin, that market only. Public data, cached 30 seconds. Information only, not financial advice.

ERC-721 facts for one token: owner, collection name and symbol, tokenURI, and its metadata (name, description, image) when the URI is http(s) or ipfs. The metadata fetch has a 5-second timeout and a 256 KB cap; a failed fetch is reported in metadataNote and does not fail the call.

Structured data from a web page (url) or your own text: give a schema of up to 20 field names with what each holds, and get a JSON object with exactly those fields, null where the text does not state one. Llama 3.3 70B. Text is capped at 12,000 characters; a model answer that is not JSON is retried once, then not charged.

Named entities in a text or a page: people, organisations, places, dates and money amounts (from the chat model), plus e-mail addresses, URLs and phone numbers (from patterns), each de-duplicated with a count. With url, the page's readable text is used (robots.txt is respected).

Describes an image from an https URL or base64 (JPEG, PNG, GIF or WEBP, up to 4 MB): a short description, visible objects, whether it contains text, and the answer to an optional question. Uses Llama 3.2 11B Vision; the model's answers can be wrong.

Companies from the official registers of Norway, Finland, the Czech Republic and Poland. Search by name (Norway, Finland, Czech Republic) or look up one company by its number: Norway 9 digits, Finland Y-tunnus, Czech IČO, Poland KRS (Poland by number only). Answers give name, id, status, legal form, address, incorporation date and industry; Norway lookups by number also list managers. France is no

A summary of a web page (url) or your own text (up to 12,000 characters) as short, medium or bullets, in the language you name, with key points. Llama 3.3 70B. A page is read as in /api/read, robots.txt respected.

Event logs of a contract over recent blocks (default 1,000, max 5,000), newest first, max 100: block, transaction hash, topics and data. topic0 takes an event signature such as Transfer(address,address,uint256) or a 32-byte hash. Public nodes refuse very large results: narrow the range or add topic0.

ERC-20 transfers into and out of an address in a window of recent blocks (default 2,000, max 10,000), from Transfer logs, newest first, max 100 rows with token symbols. token limits the search to one contract. A busy address can be truncated: narrow the window to see the rest.

On-chain facts about an ERC-20 contract on Base (default), Ethereum, Arbitrum, Optimism or Polygon, read over RPC: name, symbol, decimals, total supply, code size, whether it is a proxy (EIP-1967, EIP-1822 or the pre-1967 OpenZeppelin slots) with its implementation and admin, owner() and whether ownership is renounced, risky functions found in the bytecode, and plain warning flags. No paid securit

Reads the text of an image (JPEG, PNG, GIF or WEBP, up to 4 MB) with Llama 3.2 11B Vision on Workers AI. Send an https url or base64 image, and optionally a language hint. Returns the full text with its line breaks, the lines, a language guess and the model that answered. An image with no readable text is a 422 and is not charged.

Native balance and the major tokens (USDC, USDT, EURC, DAI, WETH, cbBTC and WBTC where listed) of an EVM address on Base (default), Ethereum, Arbitrum, Optimism, Polygon, or chain=all, with USD values from Coinbase spot prices. One Multicall3 call per chain. Zero balances are omitted, and only the listed tokens are checked, not every token the wallet holds.

Replaces personal data in a text with placeholders: e-mail addresses, phone numbers, IBANs (mod 97 checked), payment card numbers (Luhn checked only), IPv4 addresses and, with names true, person names found by the chat model. Returns the redacted text and counts per type. Original values are never returned.

Labels up to 20 texts with 2 to 20 labels you choose, with a confidence from 0 to 1 and a one-line reason per text. One label per text, or several with multi true. Uses the chat model with JSON output; labels are as good as the model's reading of them.

Safety check of a text or a chat turn with Llama Guard 3: safe or unsafe, and the violated categories (S1 to S14, named in plain words). Send text, or messages (up to 20 turns). Classifies only; it does not change or block anything.

Runs a read-only SPARQL query on Wikidata and returns the rows as plain values (ASK returns true or false). Only SELECT and ASK are allowed; updates are refused. A LIMIT of 100 or less is added when missing. 8-second limit. Data is CC0.

The latest releases of a GitHub repository: tag, name, date, pre-release flag, the first 1,500 characters of the notes, and the number of assets. Needs the GITHUB_TOKEN secret on the deployment; without it the call answers 503 and is not charged.

Current TLS certificates for a domain from Certificate Transparency logs (via CertSpotter): issuer, validity dates and days left, DNS names (up to 100 per certificate), and the distinct subdomains seen. Keyless tier: one request per call; answers are cached an hour.