Explore APIs

Which US federal income tax bracket a taxable income falls in: marginal rate, bracket edges and dollars to the next bracket.

Rank US counties by July 2025 population estimate, nationally or within one state; largest or smallest first.

Stablecoin peg tick — USDT, USDC, USDS, DAI, USDe, USD1 in ONE $0.01 call: live price, deviation from $1, 24h change, and a deterministic STABLE / WATCH / ALERT verdict per coin. Built for monitoring loops: call it every cycle, escalate to /api/depeg-watch for the single-coin deep read when a verdict is not STABLE. 60s freshness, cited to CoinGecko, no LLM in the path.

Personalized nutrition plan for nutrition and fitness agents. Returns macros, meal timing, and supplement guidance tuned to goals.

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

Sentence BLEU (1-4 gram, brevity penalty, optional smoothing) and ROUGE-1, ROUGE-2, ROUGE-L F1 for text against references.

Extract the h1-h6 heading outline from supplied HTML and flag missing or multiple h1, skipped levels and empty headings.

Format an amount as money for an ISO 4217 currency code in a locale; reports minor-unit digits; unknown codes rejected.

Link a NAICS industry to its top SOC occupations, or a SOC occupation to its top industries, from the BLS employment matrix.

Critical depth where Froude number is 1 (Q^2/g = A^3/T) for rectangular, trapezoidal, triangular or circular channels.

Smart home device recommendations and ecosystem advice for any country: Matter compatibility, ecosystem fit (Alexa, Google Home, Apple HomeKit), device picks by room and budget, and local plug/voltage/availability notes. For homeowner and smart-home agents. Returns recommended devices with Matter certification status and practical setup guidance.

Floyd-Warshall all-pairs shortest distances for up to 100 nodes; negative weights ok; detects negative cycles.

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

FDA drug label lookup — the newest prescribing information for a brand or generic drug name: boxed warning, indications, dosage, contraindications, warnings, adverse reactions and drug interactions as previews or one section in full, plus manufacturer, route, RxNorm, UNII and application numbers. Use to read what a drug is approved for and its official warnings.

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

Daily mean PM2.5, PM10, ozone, NO2 and US AQI over a date range, plus the count of days above an AQI threshold.

Analyze text (max 2000 chars): emoji count, distinct emoji, grapheme clusters, unqualified and text-presentation forms.

Battery bank layout (series and parallel counts) and runtime from load, voltage, Ah, depth of discharge and efficiency.

Check a US ABA routing number: 3-7-1 weighted checksum and the Federal Reserve district from the prefix.

A country's postal address layout: line order template, required fields, uppercase rules and field labels.

Elo rating update after a game: win probability for each side, new ratings and the points exchanged.

Grade 1 Braille text to Unicode Braille cells and back, with number sign, capital sign and dot numbers per cell.

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

eBay listings search — live prices, condition, shipping, seller reputation, auctions & Buy It Now across supported regional eBay sites, with category, price band, condition, seller & location filters, sorted, as clean JSON.

Dog and cat symptom checker / pet symptom triage for pet-owner and vet agents. Returns an urgency rating (emergency vs home-care) and home-care guidance for symptoms in dogs, cats, birds, rabbits and other species worldwide. Pet-info guide, not a veterinary diagnosis.

Scientific and academic paper search: research papers and scholarly literature from arXiv, PubMed, OpenAlex, Crossref and Semantic Scholar in one call, deduplicated and retraction-aware. Each hit: DOI, authors, venue, snippet, citation count and citations per year, type, open-access PDF link. Sort by relevance, recency, citations or impact. Keyless. For literature review and citing research.

Use when you have a company domain and need to know what the company is before spending more. Returns the company name and site title, domain age, registrar, mail provider, DNS provider, DMARC and HTTPS status, and a count of the third-party vendors detected. One call, no signup, no API key. The cheapest way to qualify a domain before buying a fuller record.

Hacker News stories linking to a domain in a date window: count, total points and comments, and the top stories.

Macro & calorie targets / nutrition by fitness goal: calculate daily intake. Returns macro and calorie targets plus a meal-timing strategy based on goal, body weight, and activity level. Fitness-info for fitness and nutrition agents, not medical advice.

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