Explore APIs

Transpose a note by a (possibly negative) number of semitones. Result is spelled chromatically with sharps, or flats when `preferFlats` is true.

FetchDelta: fetch one public web page as Markdown with title, headings, links and source timestamp. Use for current docs, changelogs or policy text. HTML only; no JavaScript rendering or login. Preview source readability for free before paying.

Translate text to/from Brazilian Portuguese (pt-BR), English or Spanish. Pay per call in USDC.

Render any URL into a clean A4 PDF with print-quality graphics. Auto-removes ads, cookie banners, and overlays. Returns base64-encoded PDF with metadata. No browser infrastructure or PDF library needed — pay per render. Accepts USDC payments on Base and Solana

Crop factor of a sensor, with the full-frame equivalent focal length, aperture and ISO for a lens, or a custom sensor size.

Bulk token risk check API for Base (batch honeypot and rug scan). Batch Base token risk verdicts: up to 20 ERC-20 addresses in one call, priced per address, each with the same fixed JSON as /v1/verdict (verdict safe / caution / danger, risk_score 0-100, honeypot and tax simulation, owner privileges, proxy, LP, holders, verified, age; unknown when a source is down). Charged only when at least one a

Verifiable Random shuffle — a uniform Fisher-Yates permutation bound to a future drand round the server waits for (typically 3-6s) and verifies locally, with original indices and a reproducible proof transcript.

Generate a complete icon set from an existing image — covers PWA/web (manifest.json, favicons, maskable icons), iOS, Android, Windows tiles, and Safari pinned tabs in one ZIP, plus a 1200×630 Open Graph share card. Most icon-resize tools only cover Android and iOS native — this one also covers the web/PWA platform they skip entirely.

Machine translation for agents between 100 languages: send text (up to 5,000 chars), target_lang and optional source_lang (auto-detect by default) and get the translation. $0.001 USDC per started 1,000 characters on Base; failures are not charged. LibreTranslate/dTelecom-style {q, source, target} also accepted at /v1/translation. M2M100 1.2B. By DevX.

Full transcript of a YouTube video from its URL — captions/subtitles as clean plain text in your language. YouTube transcript, video to text, captions extraction, subtitle download, speech to text, multilingual. 105 languages supported, including English, Spanish, Portuguese, French, German, Hindi, Arabic, Chinese, Japanese, Korean, Russian, Indonesian and Vietnamese. Pay per call, no account or A

Find Apollo mission photos and media (missions 7 to 17) in NASA's library, with mission year and photo-id prefix.

Convert kanji-mixed Japanese (JP) text to hiragana, katakana, or romaji (Hepburn/Nippon/Passport), with a per-token breakdown of surface form, reading, and part-of-speech. Backed by the kuromoji morphological analyzer. Use to generate ruby readings, build search indexes, or preprocess text for speech synthesis.

Find a site's RSS and Atom feeds from a page URL: declared alternate links, else 5 common feed paths probed on the host.

Canonical in-universe chronology for fan and entertainment agents. Returns eras, pivotal events, watch/read order, and lore gaps for major franchises.

MusicBrainz WS/2 lookup/search (keyless; User-Agent required; 1 req/s). entity + mbid OR query → trimmed JSON.

x402swag.com — merch store for AI agents and builders. T-shirts, stickers, mugs and custom print-on-demand designs. Full catalog with prices, variants and the exact buy flow in one call.

Metalift scrape: URL → LLM-ready markdown with WAF/retail escalation, JS render, and residential proxy when needed. Use instead of a plain HTTP fetch when Cloudflare, bot checks, or SPAs block cheap scrapers. Also works for static pages (pay only for the path used). (5 credits ≈ $0.005 USDC)

Remove the background from a photo. Send an image URL, get a transparent PNG cutout of the subject (BiRefNet model).

Get today's curated Word of the Day (definition + part of speech).

Generate AI video with Base USDC. Price depends on model, duration, and resolution. Returns a free status URL to poll.

Hallo Welt der Nexari GmbH: kleinster bezahlter Test-Endpunkt, gibt Gruß, Zeit und gezahlten Betrag zurück. Hello world from Germany: smallest paid x402 smoke test, returns greeting, timestamp and paid amount. Voraussetzung/required: accept_terms_hash, business_name (B2B) – /legal/terms.json

Local events on demand from AllEvents — event name, category, date & time, venue, city, and ticket link. Get results for $0.02 per record (minimum 1, up to 100). Simply enter a city and the number of events you want. Discover concerts, workshops, festivals, and more. Powered by Techforce Global — explore more at https://techforceglobal.com

Public HTML URL to bounded Markdown, source URL, retrieval time and content hash. No JavaScript, login, PDF or CAPTCHA bypass. Unsupported or oversized content fails before settlement. Reuse request_key and the original payment proof to recover a completed response for 24 hours without another charge.

Compare two English words side by side: parts of speech, sense counts, lead definitions and what they share.

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.

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

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.

Upcoming Federal Reserve FOMC meetings, press conferences, speeches, testimony and releases with ET times, speakers and a market-moving flag.