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Find the additives named on a food label and return, for each, the cross-axis derivation across jurisdictions

Official French company data (SIRENE/RNE), cleaned: identity, geolocated HQ, NACE code, headcount, latest revenue and net income.

Extract readable text, metadata, headings, links and JSON-LD from one public static HTML page for research and retrieval.

Twitter (X) video & image downloader — pass a public tweet / X post URL, get direct CDN media links: .mp4 video URLs with thumbnails plus every image in the post, ready to stream, embed, re-host, or download. No scraping or browser automation.

Wikipedia page summary via REST (keyless, User-Agent required). title (+ lang) → extract/thumbnail/urls.

Batch convert free-text quantities (SI/imperial). Factors from NIST SP 811 / CODATA where cited.

TVMaze show search (keyless). q → trimmed shows (name/type/language/genres/status/rating/url/image).

Read-only Base ERC-20 risk heuristics (honeypot/tax/liquidity/ownership). Data only, not advice. Free public Base RPCs. No charge on empty/failed. Port of amp token-risk.

TLS handshake for host[:port]; notBefore/notAfter, SANs, issuer, serial, days-left. Fail closed.

TEXT-IN ONLY sentiment trajectory: per-item score, inflection points, drift magnitude + model version. Not a trading signal. No scrape / no X. OpenRouter free-first.

npm SemVer + PEP 440 range checks; optional latest from npm/PyPI public JSON.

Recursively sort object keys; return canonical compact JSON. Offline. Amp port.

IP/CIDR intel via RIR RDAP + DB-IP Lite country (CC BY 4.0). No MaxMind.

Hacker News stories via Firebase API (keyless). Mode top|new|best (limit≤20) or item id.

Distance/bearing/midpoint/geohash/point-in-polygon. Pure math — NO geocoding.

ECB FX history via Frankfurter (keyless). from/to + start/end (or single date) → rates series. Data only — not advice.

Convert strings between camel/snake/kebab/Pascal/CONSTANT/Title (batch ≤50). Offline native.

Check whether email addresses are real and safe to send to. Verifies up to 25 addresses per call: syntax, domain MX/A record (including null-MX), disposable-domain, role-account, free-provider and typo checks. Does not perform SMTP/mailbox verification.

Detect whether an arbitrage opportunity exists in a set of token exchange rates (multi-pool negative-cycle scan). Cheap boolean + magnitude signal for trading agents. POST a swap-rate graph, get back whether a profitable cycle exists and how large — without the path.

Entry to the Secret Chat for the Chosen for 24 hours

Generate scannable QR codes from any text, URL, or structured payload (WiFi, vCard, SMS, email, geo, crypto). Returns PNG by default with JPG, WebP, and SVG output, plus optional error-correction, sizing, color, version, and encoding controls. Simple cURL POST: send qr_data, receive an image.

Render any public URL in a real browser (Chromium): markdown text plus screenshot and evidence URLs. $0.005 USDC on Base per call.

8 Things That Tripped Me Up Implementing x402

Ratatouille demo hello world: returns a greeting and a timestamp.

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.

Structured evaluation with TypeSafe's Jev (System One) model. Send any state plus typed questions — noul (true/false), choice (pick one), or score (ordinal scale) — and get back calibrated probabilities and confidence for each. Built for routing, classification, triage and policy checks where a fast, predictable, machine-readable answer beats prose.

Monitor recent official Israeli company-registry changes for an exact nine-digit company number. Returns filing and status-change events newest first, with dates, deterministic categories, source URLs, and checked_at. Use for counterparty monitoring, supplier due diligence, onboarding refreshes, corporate-event alerts, and registry change detection. Coverage is approximately one year.

List a country's holidays for a calendar year (optionally by state/region, language and type).

One DNS Doctor bulk scan of 2-50 domains in a single call, priced per domain.

Use before paying an x402 endpoint you have not used before, when you cannot tell a working seller from a trap, a testnet address dressed as mainnet, or a listing whose price no longer matches its challenge. Returns a verdict — live, degraded, trap, testnet or dead — a 0-100 risk score, and the specific findings behind both, so an agent can decline a bad endpoint instead of learning about it by lo