x402 Doctor checkup of any x402 endpoint, without buying: whether it answers with a valid payment request, its x402 version and any problems in it, the prices and networks it asks for, its payTo wallets and response time.

Count French companies matching free cross-criteria on a pre-joined table of the official registries: geography (departement, region, postal-code prefix), NAF activity, legal form, workforce, age, last filed accounts (revenue, net income, margins, ratios, trends, cash items) and public signals (RGE, equality index, ICPE/Seveso, public contracts, authorisations). Active legal persons by default. Returns the exact count and each source's date: size a market before listing it.

Crypto sanctions screening API (OFAC). Sanctions screen for one crypto address, for agents and apps that send payments: exact match against all 1050 digital currency addresses in the official US Treasury OFAC SDN list (EVM case-insensitive). Returns sanctioned true/false, matching SDN entity, programs and list date, a chain guess and checksum validity, plus the list date. Informational, not legal advice.

News articles, each with the quorums and viewpoints related to the article.

List markets with price and open interest

Check a domain in one call: registration via RDAP (registered or likely available, registrar, created and expiry dates, status, nameservers; DNS fallback for TLDs without RDAP), DNS (A, NS, MX, CAA, DNSSEC) and email security (SPF, DMARC policy, DKIM on common selectors) with a 0 to 100 score, grade and findings. Params: domain (required).

Pool depth and slippage for a token: per pool (Uniswap, Aerodrome, PancakeSwap, Sushi and more) the liquidity in USD, estimated price impact for each size in sizes_usd and the largest trade at 1% and 5% impact. Use to size a trade or check if an exit is possible. Estimate based on constant product; conservative for concentrated liquidity pools. Errors with Not charged if no pool exists.

Look up a vulnerability by CVE or GHSA id (NVD: description, CVSS score and vector, CWE, CISA known-exploited flag; OSV: affected packages and fixed versions) or check a package version for known vulnerabilities via OSV.dev (npm, PyPI, Maven, Go, crates.io, RubyGems, NuGet, Packagist, Debian ...). Params: cve_id, or package + ecosystem (+ version, recommended), limit (default 20).

URL-safe slug from arbitrary text. NFKD-decomposes unicode (é -> e), lowercases, replaces every non-[a-z0-9] run with a separator, strips leading/trailing separators, truncates on separator boundaries (never mid-word).

Laws of Austria from RIS (Rechtsinformationssystem): search by title, or fetch one act by its official id, with title, in-force status, dates and the official link. An id or search not yet cached answers 404, not charged, and is fetched within about a minute.

Use when testing an x402 client end to end. Returns ok and the server time; costs one cent.

Is a vendor down right now? Current outage status for one SaaS vendor. $0.01 USDC on Base per call. Returns status, active-incident summary, last-checked time, source URL and freshness fields, read live from PulseWatch. Unknown vendors return 404, not charged. Don't use this for past incidents; use /v1/incidents.

OFAC SDN screen by name, alias (aka/fka/nka), or UID against the Treasury SDN list joined with alt.csv and add.csv. A clean no-match is a valid screening result and is charged.

List recent outages and incidents for one SaaS vendor. $0.01 USDC on Base per call. Returns up to 10 most recent incidents (title, status, severity, start and resolve times) from PulseWatch. Unknown vendors return 404, not charged. Don't use this for live up/down status; use /v1/status.

Gas price on Base right now: gas price, base fee and priority fee in gwei, plus the cost of a simple ETH transfer. Decide whether to transact now or wait. No input needed.

Package vulnerability lookup API. Is this package version safe to install? Known vulnerabilities (CVE/GHSA ids, severity, CVSS score, fixed-in versions) and malicious-package flags for one npm, PyPI, Go, crates.io, Packagist, RubyGems, Maven or NuGet package version, from OSV.dev. Search intents: package vulnerability check, is this npm package safe, cve lookup api, pypi vulnerability, malicious package check, osv lookup.

Fetch a reviewed public page and return its links with resolved absolute URLs and anchor text, the canonical URL, the declared meta robots directive, and how many links leave the host. Relative hrefs are resolved against the page, so a caller never has to guess a base.

Xynaptic Crypto Global — global crypto market snapshot (CoinMarketCap Pro): total market cap, BTC/ETH dominance, 24h volume, market trend assessment. GET (no params).

Market-wide extreme funding (crowding / carry opportunities)

Birth time resolver: Local birth time + place -> exact UT, historical UTC offset, Delta T, Local Mean Time, true solar time.