Explore APIs

Is retinol safe with vitamin C? Skincare ingredient-conflict checker — myth-vs-fact verdict on routine pairings (retinol+AHA, niacinamide+vitamin C, benzoyl peroxide+retinol), real pH/oxidation conflicts flagged separately from debunked myths, plus a layering-order suggestion.

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

Split EVM calldata into its 4-byte selector and 32-byte words, naming common ERC-20/721 calls and spotting addresses.

Clean-sheet probability — goalkeeper stats, defensive metrics, home/away split, BTTS and under-2.5 analysis. For football betting agents.

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

Bayes' theorem: posterior probability from a prior, sensitivity and false-positive rate, with natural frequencies and odds form.

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.

Sample autocorrelation (ACF) and partial autocorrelation (PACF, Durbin-Levinson) of a series up to lag k, with 95% bounds.

Pay once to receive a short-lived WebSocket ticket for the live Bitcoin mempool stream.

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

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

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

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

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

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.

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

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

Four Pillars (BaZi) chart for a date and optional time: stems, branches, animals, five-element counts, day master.

Axial stress, strain and elongation from load, area, E and length; thermal strain/stress; factor of safety vs yield.

Bible book facts: chapters, testament, order and abbreviations for one of the 66 books, or the full table (1189 chapters).

Eve’s RWA print: which official number is the actual (T-bill, gold, NAV). Call for official prints, not casino coins.

StatEdge ATS records — historical against-the-spread trends for specific situations and teams

Dates for every N business days, or the last or Nth business day of each month, skipping weekends and your holiday list.

Optimal Tower of Hanoi move list for up to 10 disks between pegs A, B and C, and the minimum move count 2^n - 1.

Flow rate in gpm and litres per minute from a bucket test: container volume and seconds to fill, with a daily-use estimate.

Detect Trojan Source bidi controls (CVE-2021-42574): overrides, isolates, unbalanced openers, stray closers, with positions.

List catalogued stars in an IAU constellation (name or 3-letter code), brightest first, with an optional named-only filter.

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Rolling mean return and rolling annualized volatility over a window, from a price or return series you supply.