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API recommendation and x402 discovery for your task. Required query: need. Which API should I call? Recommends which x402 API to use for any task, with evidence. Describe a task in plain words. Compare up to five paid APIs, URLs, prices, payment networks and invocation details. Includes paid delivery evidence and risk flags. Provider calls are paid separately. No picks / non-2xx is never charged.

Real-time Bitcoin price in USD, a median across 10 exchanges including Binance, Coinbase, Kraken and Bullish — Ed25519 signed attestation

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Validate IBAN structure and MOD-97 checksum. Does not establish account ownership, beneficiary identity or absence of fraud.

x402 debugging/troubleshooting Q&A: Ask any question, get a cited answer. Whether you need HTTP 402 Payment Required help, facilitator verify & settle (CDP @coinbase/cdp-sdk), Bazaar discovery metadata & listing, protocol documentation, Next.js paid routes, or planning, building, and integrating x402 servers: @x402/core @x402/next @x402/express @x402/hono @x402/fastify @x402/fetch @x402/axios @x40

Spot Check. REQUIRES ?host= on the paid request — a signed request without it is refused before the gate and no money moves. Name a host and get what this observatory already holds on it, signed: corpus rounds and verdicts as recorded, when we last actually knocked, our coverage of the window since we met it, and the gaps with their reasons. Read from the books at the counter — no request is made

TCGPlayer current prices for every card in a set — useful for set value tracking and sealed Pokemon / Magic / Yu-Gi-Oh product pricing.

Japanese business-day calculator: check if a date is a business day, add N business days to a date, or count business days in a range. Accounts for weekends and Japanese national holidays; optional Saturday and year-end/new-year rules.

VAT calculator for EU-27 + UK: net→gross or gross→net at standard or reduced rate. Includes rates table snapshot date.

safe arithmetic eval (+ - * / % ^ parens)

Live feed of every active rail disruption across the Japanese (JP) network in one call — delays and suspensions with bilingual summaries, refreshed continuously from ODPT. Built for MONITORING agents: poll on an interval (e.g. every 5 minutes) to maintain a nationwide incident watchlist without querying stations one by one.

Translation tuned for skilled-trade work: HVAC, refrigeration, electrical and construction terms stay correct instead of collapsing into a generic word. Handles text typed fast without accent marks.

npm breaking changes between two versions of a package, before a package upgrade: the documented breaking changes per version, read from the real CHANGELOG, GitHub release notes and alpha/beta/rc notes, plus major version bumps, Node.js engine, ESM/CJS, exports and peer dependency changes, migration guide links and a verdict. Exact versions or a major ('4'); a source URL for every item. One call p

Official public holidays by country and year, with regional subdivisions, localized names and normalized dates.

Find US court cases, opinions and dockets naming a business, with case name, court, date, citation, docket number and nature of suit.

BitBooth echo endpoint — pays a tiny USDC fee, returns a JSON echo. Reference implementation of the x402 + CDP Facilitator + Bazaar discovery loop.

Read one public URL and return clean bounded page content with a SHA-256 content hash.

Get live EVM gas pricing with EIP-1559 breakdown and USD cost estimates

Japanese address normalization (住所正規化): standardize a JP address into clean prefecture / city / town / chome-banchi components. Fixes fullwidth/halfwidth digits, old-form kanji, and chome-banchi notation variants, and resolves the 7-digit postal code. Returns a 0-1 confidence score so agents can flag low-quality input. Use for address validation, cleansing, deduplication, and canonicalization befo

Check an exact npm or PyPI package version immediately before installation using current registry, vulnerability, malicious-package, withdrawal/deprecation, and verified provenance evidence. Returns ALLOW, REVIEW, BLOCK, or UNKNOWN with machine-readable reasons.

Lima consumer price inflation — latest monthly CPI percentage change for Metropolitan Lima, Peru. Track inflation and purchasing power trends with the reference month.

Brazil IPCA inflation — latest monthly consumer-price change in percent. Track inflation and purchasing-power trends with the reference month.

UUID inspector — parses any UUID (canonical, braces, URN or 32-hex form) and returns its version, variant, embedded timestamp for v1/v6/v7, nil/max flags, hex and URN forms. Use to validate identifiers or recover the creation time of UUIDv7 keys.

Korean corporate disclosure (DART) event stream, cursor-based delta. All filings, classified with importance score.

PRICE: 0.005 USDC. Multilingual vague-to-canonical shopping intelligence for physical anime collectibles. Accept requests such as 'I want a ONE PIECE figure', 'a big cheap Pikachu plush', '部屋に飾れるかっこいいゾロ', or 'a Japan-only Luffy figure' even when the exact product is unknown. Interpret hard identity constraints plus soft preferences such as budget, color, size, style, gift

US border wait times: live CBP waits at all 85 US-Mexico and US-Canada land ports of entry, ranked by drive time plus wait for each lane (standard, SENTRI/NEXUS, Ready Lane, FAST) for passenger, commercial or pedestrian traffic. BorderScout

Given an internet address (IP) or a network identification number (ASN), this tool returns who operates that piece of the internet: the network number, the owner's name, the country it's registered in, the regional registry that manages it, and the exact address range it belongs to.

Paint one pixel on 21millionpixels.art, a shared 21,000,000-pixel canvas. Reads are free; paid pixels skip the human cooldown.

Hello from Taiwan — a signed timestamp from my first x402 stall

Returns a Markdown launch kit and seven-day checklist for an x402 service.