Discover / api.sitecheck-api.workers.dev
SiteCheck
■ Challenge detectedCurrency exchange rates from the European Central Bank (about 30 currencies, back to 1999): latest or a given date, amount conversion, or a daily time series between two dates. Source: ECB reference rates via Frankfurter.
- Listed price
- $0.001
- Challenge detected
- 5 of the last 9 checks
- Median response
- 278 ms
- Last checked
- 16 Oct, 23:40 UTC
- In our index since
- 1 Oct 2026
Endpoint
curl -i https://api.sitecheck-api.workers.dev/api/fx # 402 Payment Required: pay with an x402 client (USDC on Base), # then send the same request again with the payment attached.
221 listed endpoints · on x402 Bazaar
Checks and payment terms on this page refer to the endpoint above. Other listed endpoints have not been checked individually.
Base URLhttps:
- GET/crypto
/convertNo price listedConvert an amount between a crypto and a fiat currency, or between two crypto assets, at the current spot price: the rate, the converted amount, the pair path used (direct, or through USD) and the time of the rate. Spot prices from Coinbase, Kraken as the fallback. A spot rate, not an executable quote: no fees or slippage. Fiat to fiat is refused; use the FX tool for that. Information only, not financial advice. - GET/earthquakesNo price listedRecent earthquakes from USGS, newest first: magnitude, place, time, depth, coordinates, tsunami flag and alert level. Filter by minimum magnitude, days back (max 30) and a radius around a point. Public domain data.
- GET/apps
/searchNo price listedSearches the App Store (iTunes Search API) by keyword, or looks up one app by its numeric id: name, developer, bundle id, price, rating and rating count, genres, version, release and update dates, size and store link. Country sets the storefront (default us). Ratings are the store's averages for that country. Limit max 50. - GET/github
/issuesNo price listedIssues 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. - GET/readNo price listedRead one web page as clean Markdown (or plain text) for an LLM: the main content without menus, cookie banners and footers, plus title, description, author, published date, language and canonical URL; links on request. robots.txt is respected (a disallowed page is refused and not charged). No JavaScript is run.
- GET/evm
/walletNo price listedNative 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. - GET/qrNo price listedA QR code for a text of up to 300 characters (a URL, Wi-Fi login or contact card), generated locally. format=svg returns the image itself as image/svg+xml; format=json returns the version, the module count, the SVG and a data URI. Error correction L, M, Q or H (default M); size from 128 to 1024 pixels (default 512).
- POST/text
/faqNo price listedUp to 15 question and answer pairs written from a text (max 30,000 characters). Each answer carries a supporting quote that is checked against the text; pairs whose quote does not occur in the text are dropped. Model-written: review the questions before publishing. - POST/ocrNo price listedReads 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.
- GET/auditNo price listedWebsite audit in one call: WCAG 2.2 accessibility issues (European Accessibility Act) with fixes and a score, SEO basics, security headers and tech stack.
- GET/crypto
/whalesNo price listedLarge stablecoin and major-token transfers in the last few minutes on Ethereum, Base, Arbitrum, Optimism or Polygon: hash, block time, sender, receiver, amount and USD value at the Coinbase spot price, sorted by value. Labels only for a few known addresses; others are null. One token contract is read over public RPC, so the window is short. Information only, not financial advice. - GET/uk-companyNo price listedA UK company from Companies House, by number (00445790) or name (best match plus up to four alternatives): status, incorporation date, registered office, SIC codes, accounts and confirmation-statement due dates with overdue flags, current officers (max 20), persons with significant control (max 10) and the last 10 filings with links. Crown copyright, Open Government Licence v3.0.
- GET/uuidNo price listedIdentifiers and secrets from the Web Crypto random source: UUID v4 and v7, ULID, nanoid (size and alphabet), random passwords (length and character classes) and passphrases (words from the EFF large wordlist, CC BY 3.0 US), up to 100 per call. mode=parse validates a UUID or ULID and reports its version, variant and the time embedded in v1, v6, v7 and ULID. Nothing is stored.
- POST/email
/replyNo price listedDrafts a reply (subject and body) to a received e-mail (max 10,000 characters) for an intent: accept, decline, ask-information, follow-up or custom with your own instructions. Tone formal, neutral or friendly; language as requested. Dates, numbers and names that are not in the inputs appear as placeholders such as [date]. Read it before sending. - POST/rpc
/evmNo price listedRead-only JSON-RPC pass-through for 20+ EVM chains (ethereum, base, arbitrum, optimism, polygon, bsc, avalanche, gnosis, linea, scroll, zksync, mantle, blast, celo, fantom, sonic, unichain, opbnb, zora, mode, metis, cronos). Single or batch calls (up to 10). Write methods refused. - GET/law
/ecfrNo price listedSearches the US eCFR by keyword or retrieves the current text of a specific section (title, part, section) via the official eCFR API. Returns hierarchy, heading, text (max 50,000 characters), last amended date, and official URL. Coverage: current CFR as published on ecfr.gov. - POST/rpc
/solanaNo price listedRead-only JSON-RPC pass-through for Solana mainnet. Allowed methods: getAccountInfo, getBalance, getTransaction, getSignaturesForAddress (limit <= 100), getTokenAccountsByOwner, getTokenSupply, getSlot, getBlockTime, getLatestBlockhash, getMultipleAccounts (<= 20). Write methods and getProgramAccounts refused. - GET/evm
/addressNo price listedNative 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. - GET/vinNo price listedDecodes up to 20 vehicle identification numbers with NHTSA's vPIC database (US public domain): make, model, model year, trim, body class, vehicle type, engine (cylinders, displacement, fuel), drive type, plant country and city, manufacturer, and the decoder's own error code and message. The check digit is verified for North American VINs. A VIN that is not 17 characters without I, O or Q is a 400.
- GET/sec
/eventsNo price listedThe latest 8-K current reports of a US company (ticker or CIK) with their item codes explained in plain words (1.01 material agreement, 2.02 results, 5.02 executive change and so on). Each filing links to its document. US government data. - GET/date
/calcNo price listedDate and time calculations in pure code. op=diff: calendar years, months and days between two dates, and the total days. op=add or subtract: move a date by years, months, weeks, days, hours or minutes (month ends are clamped). op=info: weekday, ISO week, day of year, quarter, and age from birthDate. op=tz: a local date-time in one IANA time zone shown in another. Impossible dates are a 400 with the reason. - GET/crypto
/address-riskNo price listedScreens up to 20 crypto addresses (EVM chains, Bitcoin, Solana, Tron, Litecoin, Monero, XRP, Zcash and more; 18 currencies) against the US Treasury OFAC Specially Designated Nationals (SDN) digital currency address list. Reports sanction status, list name, SDN program, and source link. Never declares an address clean: reports 'not on the checked lists'. Information only, not financial advice. - GET/github
/searchNo price listedGitHub search with its own query syntax (e.g. 'sqlite language:rust stars:>100'). Repositories: name, owner, stars, forks, language, topics, licence, pushed date. Issues: title, state, labels, comments, URL. Code: path, repository and link. GitHub limits search to about 30 requests a minute; a busy minute is a 503, not charged. Limit max 30. - POST/invoice
/extractNo price listedStructured data from an invoice: seller and buyer (name, address, tax ID), invoice number, dates, currency, line items, subtotal, tax, total and payment details, with null for anything absent. The arithmetic is checked (line sum against subtotal, subtotal plus tax against total) and mismatches are returned. PDF with a text layer by URL or base64, or plain text. Not live-checked: Workers AI is checked by the owner after the merge. - GET/fxNo price listedCurrency exchange rates from the European Central Bank (about 30 currencies, back to 1999): latest or a given date, amount conversion, or a daily time series between two dates. Source: ECB reference rates via Frankfurter.
A dash means the listing gives no price or method. Copy buttons copy the full URL.
Showing 25 of 221 listed endpoints. Next endpoints First endpoints
Agents can find it through the Superstables MCP server and JSON API: GET /api/v1/services/api.sitecheck-api.workers.dev
Recent checks
All 9 checks
| When (UTC) | Result | HTTP | Response |
|---|---|---|---|
| 16 Oct, 23:40 UTC | Challenge detected | 402 | 278ms |
| 15 Oct, 19:10 UTC | Challenge detected | 402 | 1975ms |
| 14 Oct, 14:31 UTC | Challenge detected | 402 | 1027ms |
| 12 Oct, 10:53 UTC | Challenge detected | 402 | 58ms |
| 10 Oct, 15:44 UTC | No challenge detected | 404 | 830ms |
| 9 Oct, 09:34 UTC | No challenge detected | 404 | 92ms |
| 8 Oct, 03:32 UTC | No challenge detected | 404 | 81ms |
| 6 Oct, 21:30 UTC | No challenge detected | 404 | 702ms |
| 2 Oct, 05:04 UTC | Challenge detected | 402 | 232ms |
Questions
Did our last probe detect a payment challenge?
At our last probe on 16 Oct, 23:40 UTC, it returned HTTP 402 or another detected payment-challenge signal. This check did not test payment, delivery or compatibility with the Superstables client.
What price is recorded for SiteCheck?
Its listed price is $0.001.
What payment terms does SiteCheck advertise?
The listing advertises x402, Base, EVM chain 5042, Solana and USDC. It names cdp as its facilitator. Check the seller's current payment challenge and authentication requirements before paying.
Where is SiteCheck listed?
In x402 Bazaar. Superstables first indexed it on 1 Oct 2026.
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