x402 endpoint checker: decodes an x402 endpoint's 402 payment terms without paying. GET url (optional method GET/POST, JSON body for POST). Sends one unpaid request; never pays or signs. Returns JSON: httpStatus, isX402, x402Version, decoded accepts (network, asset, USD amount, payTo, EOA or contract), discovery metadata presence, and pass/warn/fail checks. Any HTTP answer from the target, even 4xx/5xx, is billed; bad input, blocked hosts, connection failures and timeouts are not.

Company directors in France and the United Kingdom (CEO, président, gérant, managing director) with their probable business email, in one call. From a SIREN, a UK company number, a company name or a web domain: legal officers (official registries: RNE in France, Companies House in the UK), web domain, mail provider, latest revenue and net income (France), and a probable work email per officer from the pattern seen on the company's own pages (observed_on_site) or the common one (default_fr, default). Not SMTP-verified (verified:false). Charged only if officers are found. Nothing stored (GDPR). 20 free calls/day per IP with header X-Free-Trial: 1.

Most profitable subaccounts (with classification)

Acquire a distributed mutex lock for resource coordination

Market regime snapshot: venues open now, 24h event pressure by asset, high-severity events, prediction-market context.

European inflation and unemployment: latest annual HICP inflation and unemployment rate for every EU country, the euro area and the EU, with the previous month (Eurostat). Use for European macro in one call.

Call before buying or swapping into any Base token. Simulates a real buy and sell in its deepest pool (honeypot, buy/sell tax, round-trip loss), reads owner powers (mint, pause, blacklist, tax, proxy), liquidity, age and holder concentration. Returns SAFE / CAUTION / DANGER / SCAM with every risk explained. Failed checks are not charged.

Periodic table element lookup by symbol or atomic number, returning name, atomic mass, and category. Covers the most commonly referenced elements.

Sunrise, sunset, solar noon, day length, and moon phase for a given latitude/longitude/date, computed via the suncalc library (standard solar/lunar position algorithms) — precise astronomical math an LLM cannot reliably compute mentally.

Annualizes the current perpetual funding rate into an APR, flags which side (SHORT or LONG perp) currently collects funding, and computes carry-trade breakeven days against an assumed round-trip trading cost. Pure calculation on top of funding-rate data. Paid in USDC on Base.

Morning market briefing in one call: last 24h of SEC red flags and insider buys, latest earnings releases, this week's IPOs, and macro (yields, CPI, jobs, Fed funds), with a plain-English summary. Optional ticker watchlist. $0.025 USDC per call.

Every Hyperliquid perp currently in a crowd state (7-day moves of +50/+100/+200%, funding in its own top or bottom 5%, Wikipedia attention spikes, new listings), ranked by 7-day move, each with base rates for what followed similar states historically. Optional ?state= filter. Signed. Not investment advice.

Liquidation pressure across Hyperliquid's largest perps: for each, the known longs liquidating within 5% below the mark and shorts within 5% above it, cascade ratios against order-book depth, 2% depth, how much of open interest the known positions cover, and flags; plus the coins with the most liquidations nearby. Aggregates only. Signed. Not investment advice.

Use before acting on a Hyperliquid perpetual to see how its most profitable traders are positioned: how many wallets in a 200-wallet smart-money cohort are long vs short, long, short and net USD, the 24h change, concentration, leverage settings, share of open interest, and how that compares with the crowd (funding, 7-day move). Flags smart money positioned against a crowded move. Aggregates only, never wallet addresses. Signed. Not investment advice.

Where Hyperliquid's most profitable traders are positioned across all perps: the cohort's overall net long or short, the coins it is most net long and most net short, the biggest 24-hour changes, and coins where smart money is positioned against the crowd. Cohort definition included. Aggregates only. Signed. Not investment advice.

Overview of every builder-deployed (HIP-3) perpetual on Hyperliquid, mostly 24/7 stock, index, commodity and FX markets: each exchange's markets, open interest and volume; the largest and most traded markets; the biggest 24h moves; funding extremes; markets near their open-interest cap; and flags. Signed. Not investment advice.

Every live Hyperliquid outcome (prediction) market: readable title, category (sports, price, ipo, policy_rate, awards), deadline, each side's price as implied probability with its 24h change, and 24h volume, most traded first. Filter with category and q (text search). On-chain data. Signed. Not investment advice.

Signed historical crowd-state events for backtesting: up to 30 days per call, optionally filtered by coin and state. The archive is append-only and its daily hashes are published and Bitcoin-timestamped.

Market-wide crowding on Hyperliquid: breadth of 7-day moves, how many perps are up 50%+/100%+ in a week, share of perps with funding in their own top/bottom 5%, total open interest and its 24h change, BTC and ETH funding percentiles, and Wikipedia attention to cryptocurrency. Signed. Not investment advice.

Use before opening, sizing or holding a Hyperliquid perpetual position to see where forced selling or buying would hit: known longs liquidating within 1 to 20% below the mark and shorts above it, the biggest clusters, and coverage of open interest, set against order-book depth, spread and slippage as cascade ratios. Flags long_cascade_risk, short_squeeze_risk, thin_book. From large accounts' public positions. Aggregates only. Signed. Not investment advice.