Search UK postcodes by free-text address or place query; returns up to 100 matching postcode records.

Extract page metadata: title, description, keywords, author, published/modified dates, canonical, language, favicon, and OpenGraph/Twitter card tags.

Decode QR/barcodes from a base64-encoded image; returns each detected code's type, decoded text, bounding rect, and polygon.

Reverse-DNS lookup for an IP: PTR record plus a best-effort list of other domains hosted on the same IP.

Call when you need the text of one public http(s) page. Required query url. SSRF-gated. Not a search engine and not a GitHub clone.

Reference list of US equity exchanges and market centers with names, MICs, operating MICs, and SIP participant IDs. From x402stock, a pay-per-call market & economic data API for AI agents. No API key or account; pay in USDC via x402.

Calculate Euler totient function phi(n) for a given positive integer n.

Public URL status, latency, and response header subset for uptime and health agents

MSBI — Mycelia Signal Breadth Index. Sector participation (% above 20DMA), RSP/SPY breadth momentum, SPY price momentum. 0-100 composite. 300s cache. — Ed25519 signed attestation

Decimals of an ERC20 token — Genesis402 / UnyKorn Operator Network

Check an unsigned Base mainnet transaction before signing or broadcasting. Simulates with eth_call, estimates gas, checks sender balance and target bytecode, decodes supported token transfers and approvals, flags unlimited approvals and suspicious transaction shapes, and returns PASS, REVIEW, or FAIL. Never signs or broadcasts.

Real-time forex / exchange rates from the European Central Bank (via Frankfurter). Pass from=USD and to=EUR (or batch to=EUR,GBP,JPY,CNY). Returns rates, inverse rates and last-update date. For AI agents needing exchange rate, currency conversion, fx rate and forex data. 实时外汇汇率,支持批量与反向汇率。 Accepts payment on Base or Solana — either network works.

Total value locked for any DeFi protocol with per-chain breakdown via DefiLlama, by protocol slug such as aave-v3 or uniswap. defi tvl, protocol tvl, total value locked, defillama tvl, protocol metrics Accepts payment on Base or Solana — either network works.

A task marketplace for agents. POST {spec, reward_credits} escrows the reward and lists the task; GET lists open bounties, GET ?id=X reads one task (any state) incl. its full spec. Workers claim (/bounty/claim), submit results (/bounty/submit); the poster approves (/bounty/approve) and the worker is credited minus a 20% house fee. TO POST: hold reward_credits credits first (POST /credits/buy, $0.010 each); short balance answers 409.

Drug safety card: FDA label warnings, adverse-event counts, recalls, molecule and harm-reduction facts, each with its licence. Drug safety card from open sources in one call: pass ?name=ibuprofen (brand or generic) or a substance such as MDMA. RxNorm normalises the name to its ingredients; then the FDA label warnings (boxed warning, contraindications, interactions), FDA adverse-event report counts with the top reactions, recent FDA recalls, molecule facts (ChEMBL) and harm-reduction dose…

Find open research datasets with a plain licence verdict per dataset: public domain, attribution, share-alike, no-derivatives, non-commercial. Find open datasets you are allowed to use. Pass ?q=electricity prices and get research datasets from Zenodo (700k+), each with a plain licence verdict read from the depositor's structured licence: public domain, attribution (credit needed), share-alike (derived data must carry the same licence), no-derivatives, non-commercial or not stated.

Before your agent pays an Arc agent: does it actually deliver? Measured, not claimed. Pass ?agent=<ERC-8004 id>, ?address=0x... or ?url=. One machine-readable record from what we measured, not what it claims: answering now and over 7 days (an hourly call to every endpoint in its registration file), response time, whether its Arc payment offer works, whether a real paid call by us settled, and who pays it on chain (outside payers, how concentrated, shared or self-looking money listed apart),…

Search Wikipedia, Wikidata, Wikivoyage, Wiktionary, PsychonautWiki (harm reduction), arXiv, OpenAlex, Hacker News and Stack Overflow in one call. Research search in one call: Wikipedia, Wikidata (structured facts, CC0), Wikivoyage (travel guides), Wiktionary (meanings, translations), PsychonautWiki (harm reduction: name a substance and the answer leads with dose ranges, duration and dangerous combinations), Open Targets (drugs, diseases and genes, CC0), ChEMBL (drug molecules, phases, ATC…

Sitemap reader: every URL a website publishes, from robots.txt and its sitemaps, with last-modified dates. Every URL a website publishes, from its own sitemaps: pass ?url= and we read robots.txt for Sitemap: lines (else /sitemap.xml and /sitemap_index.xml), follow nested sitemap indexes and gzipped files, and return each URL with its lastmod, up to 5,000. Unreadable files are listed with the reason. A site with no sitemap is answered before any charge.

Live airport arrivals board by IATA code: incoming flights with origin, airline, terminal, gate, baggage belt, scheduled and revised arrival times. 机场到港航班板：到达航班的出发地、航司、登机口、行李转盘、时刻。空港到着便ボード。Tablero de llegadas. 공항 도착 항공편. Query: ?airport=JFK Accepts payment on Base or Solana — either network works.