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:
- POST/code
/explainNo price listedExplains a code snippet (max 20,000 characters): detected language, a summary, a step-by-step explanation, the functions and classes it defines, and possible bugs and security issues with line numbers. Line numbers outside the snippet are dropped. Model-written: a finding is a lead to check, not a verified defect. - GET/evm
/allowanceNo price listedERC-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. - POST/text
/answerNo price listedAnswers a question from the given text only (max 30,000 characters), with supporting quotes and their character offsets. Each quote is checked against the text and dropped if it does not occur in it. answerable is false when the text does not contain the answer. Model output: verify before relying on it. - GET/screen
/export-controlNo price listedSearches the US trade.gov Consolidated Screening List (Entity List, SDN, Denied Persons, Unverified, ITAR Debarred, etc.) by name and optional country. Each hit includes list name, aliases, addresses, programs, federal register notice, and match score. - GET/prediction
/polymarketNo price listedActive Polymarket prediction markets matching search words, or one market by slug: the question, each outcome with its price as an implied probability, volume, liquidity, end date and link. Closed markets are left out. Source: Polymarket Gamma API. Information only, not financial advice. - GET/pm
/eventNo price listedFetches details for a single Polymarket event by slug or numeric ID, including all associated markets, outcome tokens, implied probability prices, volume, liquidity, resolution source, rules, and start/end dates. Information only, not financial advice. - GET/defi
/chainsNo price listedTotal 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. - GET/arxivNo price listedarXiv papers matching search terms, optionally in one category (cs.AI, math.CO), newest first, max 25: id, title, authors, dates, a 500-character summary, categories and the PDF link. Attribution: Thank you to arXiv for use of its open access interoperability.
- GET/defi
/yieldsNo price listedDeFi 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. - POST/text
/toneNo price listedTone analysis of a text (max 10,000 characters): formality 0-1, sentiment, emotion scores, tone labels such as friendly, aggressive or urgent, and short suggestions. The reading level (Flesch-Kincaid grade) is computed in code with a simple syllable count, so treat it as an estimate. Model judgements are not measurements. - GET/sunNo price listedSunrise, sunset, solar noon and day length for a coordinate and date (default today), with the moonrise, moonset and phase. Times are ISO 8601 with the offset MET Norway gives (+00:00 is UTC). Attribution: data from MET Norway (CC BY 4.0).
- GET/pm
/historyNo price listedFetches historical price points for a Polymarket outcome token across standard intervals (1h, 6h, 1d, 1w, max) or with custom fidelity. Timestamps formatted in ISO. Maximum 1,000 points. Information only, not financial advice. - GET/holidaysNo price listedPublic holidays of a country (ISO 2 code) for a year (default: this year): date, local and English names, and whether the holiday is nationwide or regional with its counties. Source: Nager.Date. An empty list is a valid answer.
- GET/github
/releasesNo price listedThe 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. - POST/redactNo price listedReplaces 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.
- GET/package
/searchNo price listedSearches package names and descriptions on npm, crates.io, Packagist, RubyGems and NuGet, returning name, version, description, downloads where the registry gives them, licence, repository and last publish date. PyPI has no search API: it is checked by exact name only. Registries that fail are listed in unavailable. Limit per registry max 10. - GET/company
/tickerNo price listedMaps a US-listed stock ticker, SEC CIK number or company name fragment to the other two, with the exchange: an exact ticker or CIK, or up to 10 names matching the words you give (the names that start with it first). From the SEC's company ticker file (public domain), cached a day and trimmed before caching. Covers companies with an SEC ticker only; a name with no match is a 404, not charged. - GET/screen
/debarmentNo price listedSearches the World Bank Listing of Ineligible Firms and Individuals for debarred and ineligible firms and individuals. Each hit: list, name, country, grounds, from/to dates, source URL. If a list is unreachable, returns listsUnavailable and 503 when none are checked. - GET/linksNo price listedEvery link on one page (anchor text, internal or external) and a status check of up to 40 of them: status, final URL after redirects, ok, and the error for network failures. Totals: found, checked, broken, redirected and skipped beyond the 40. scope=all, internal or external. robots.txt is respected.
- GET/law
/federal-registerNo price listedSearches Federal Register documents via the official API (public domain). Filter by terms, agency slug, document type (rule, proposed rule, notice, presidential document) and date range. Each result includes title, document number, type, agencies, publication date, effective date, comment end date, abstract, and PDF/HTML URLs. `limit` max 50. - GET/phoneNo price listedChecks and formats a phone number with libphonenumber: valid and possible flags, E.164, international and national formats, country, calling code and line type (mobile, fixed line, toll free and so on). Without a + sign, give the country. No network call.
- GET/sslNo price listedTLS certificate expiry for up to 10 hostnames: the issuer, validity dates, days left, all DNS names and a status (ok, expiring within 14 days, expired, none found). Read from Certificate Transparency logs (CertSpotter, crt.sh as fallback), so it is the newest valid certificate issued for each name, not the one the server presents; the answer also says whether https answers and its HSTS header. Public hostnames only.
- POST/rerankNo price listedOrders up to 50 documents by relevance to a query with the BGE reranker and returns rank, index and score for each. Use it after a keyword or vector search to pick the best few. Scores compare documents within one call only.
- GET/headersNo price listedSecurity headers of a URL's final response: Strict-Transport-Security, Content-Security-Policy, X-Frame-Options (or CSP frame-ancestors), X-Content-Type-Options, Referrer-Policy, Permissions-Policy, Cross-Origin-Opener-Policy and Cross-Origin-Resource-Policy, each with present, value, ok and advice. Also cookies missing Secure, HttpOnly or SameSite (names only), version leaks in Server or X-Powered-By, and a grade from A to F.
- GET/macroNo price listedOfficial rate and macro series in one call, by name: fed_funds, us_cpi, us_core_cpi, us_unemployment, us_10y, us_2y, us_mortgage_30y, us_gdp, wti_oil, brent_oil, henry_hub_gas, us_house_price_index, ecb_deposit_rate, ecb_main_refi_rate and euro_area_hicp. Latest value, change vs previous and vs a year earlier, and observations. Up to 6 series. FRED (US public domain), the ECB Data Portal and Eurostat.
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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