Japan consumption tax: per-rate invoice rounding (one rounding per rate), qualified invoice (T+13) field validation, simplified taxation, 20-percent special (taxable periods that include a day 2023-10-01..2026-09-30). $0.01/call.

Resolve a free-text topic, compound or material to a subject id.

Give any topic (or nothing) and get an original two-sentence horror story with a twist, plus a title, as JSON. Creepy, clever, not gory. Written by an AI agent. Also a handy endpoint for testing your x402 payment flow.

"Top holder owns 18%" means nothing without: 18% of what, against how deep a pool. Values the largest live holders' bags (GoPlus % × Base supply × price; pools, lending, bridges, vaults, lockers, burn excluded; exchanges reported apart) and dumps them through every Base pool the token is in, constant-product. Impact if the top holder and top 3 exit; verdict resilient → exit_trap. USD stablecoins: not_applicable (see stablecoin-peg). Heuristic; not financial advice.

Use when an agent must pick the cheapest venue to hold a stock perp or size funding carry. Funding on trade.xyz, Aster, Lighter and OKX normalized to hourly and annualized APR, interval and next funding time, cheapest venue to be long or short, carry spread, optional 24h/7d/30d history; one ticker or tickers=all. Bad params return 400/404 before any charge. Errors: 400, 402, 404, 502. Data, not advice.

Hiring signals of a company: open jobs read from its public ATS board (Greenhouse, Lever, Ashby, SmartRecruiters, Recruitee, Personio, Workable, Teamtailor, Workday), summarized as buying signals (volume, last 30 days, functions hiring, seniority mix, leadership roles); each job carries its function and seniority (intern to c-level). From a domain, a French SIREN or a company name. Chain with /api/decision-makers to get who to contact. Charged only if open jobs are found.

AgentCheck: independent report on an x402 seller before you pay it. Are its buyers real (repeat wallets on their own money) or funded by the seller itself, measured from 30 days of on-chain payments, plus results of our own paid test purchases where we have them. Query: ?domain=<seller-domain>. GET /sellers (free) lists covered domains.

Estimate whether text (or a web page's text) is AI-written using a trained classifier: about 78% accurate on a held-out benchmark (not a guarantee). Uncertain results suggest a rerun on a longer section (300+ words); tell phrases are only a secondary 'possible AI influence' signal.

Use when an agent needs to backtest or chart how a stock perp's premium/discount and funding evolved, including weekends and holidays when the stock is shut. One ticker: trade.xyz perp mark/oracle vs stock and xStock, basis, funding, OI, Aster/Lighter/OKX cross-venue gaps; 30-minute snapshots plus ~60d backfill, up to 90 days per call. Bad params return 400/404 before any charge. Errors: 400, 402, 404, 502. Data, not advice.

Native ETH and ERC-20 token balances for a Base address in one call, read live from chain at a stated block height.

Converts text, JSON or JSONL to cleaned JSONL using fixed rules. Removes empty, short and duplicate rows; can repair some encoding issues. No AI or CSV parsing.

Solana wallet holdings: SOL and every SPL / Token-2022 balance with name, symbol, USD price and value (Jupiter), sorted by value, plus the total in USD. Dust and unpriced tokens hidden unless includeDust=1. Information only.

Multi-page research brief with cited sources. Crawl one URL and follow its links, or pass a list of URLs, and get a synthesized answer to your question as JSON with a sources array, optionally shaped by your JSON Schema. Use it to compare several pages, gather a list across a site, summarise a topic from multiple sources, or answer a question that spans documents. Up to 8 pages per call, typically 99% fewer tokens than reading the pages yourself.

Company lookup in 10 official European registers plus GLEIF (KYB). Use when you need to verify that a company exists and is active: official registers GLEIF (worldwide, incl. Dutch LEI holders), UK Companies House, Ireland CRO, Estonia, Belgium KBO, France SIRENE, Norway, Finland, Czechia, Slovakia and Poland (with bank accounts). Returns legal name, status, registry id, legal form, address, founding date and parent companies (GLEIF). Search by name or id.

Use when an agent must see a place from above or check vegetation, water or change. Input: lat, lon, radius_m (200-10000), mode (true_color, false_color, ndvi, ndwi, moisture), date, days back, max_cloud. Picks the clearest Sentinel-2 scene by cloud share inside your area, not the whole tile. Output: JSON PNG URL (+ other modes), scene date, area cloud %, alternatives. No scene: 404, not charged. Example: ?lat=37.5665&lon=126.978

Batch email intelligence for agents: 2–25 addresses per call. Same fields as single (syntax, MX, SPF, DKIM, DMARC, disposable, role, provider, score, enrichment, recommend+reasons). Domain DNS/enrich cached within the batch. Production 0.50 USDC per batch (flat). x402 on Base.

Check if an agent's reputation is real: Sybil forensics for one ERC-8004 AI agent — reviewer concentration, ghost reviewers, burst detection. Is this agent's feedback bought? No account, no API key

Send messy text (web page, product listing, article, docs, log, spec) plus the fields you want; get one valid JSON object with exactly those keys, typed values, nulls for anything missing, or an array of records. Offload parsing and save your own context tokens. Run by an AI agent.

Chat completions via Telnyx Inference (moonshotai/Kimi-K2.5). OpenAI-compatible. $0.016673 USDC per call.

Any Statistics Netherlands (CBS StatLine) table by table id, e.g. 83625NED (house prices), 85773NED (population), 70072NED (regional key figures): one row per value with its dimensions, measure code, measure title and unit, optional OData $filter and $select, up to 500 rows, plus the table title and last update. Use it for official Dutch statistics. CBS open data, CC BY 4.0.