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Convert a byte count to a human-readable size (B/KB/MB/GB/TB/PB, 1024 steps, 2 decimals). Input: bytes.

Hyperliquid perpetual OHLCV candles for any listed coin, with trend statistics computed for you (first/last close, percent change, high, low, average volume, direction). Interval: 1m, 5m, 15m, 1h, 4h, 1d. Use it for momentum, breakout and mean-reversion checks on perps.

Cross-directory x402 service search.

EU market brief — 4 European equity indices (price + % change), the ECB's daily reference rates for USD, GBP, CHF, JPY and CNY, and the latest ECB press releases, speeches and interviews. No inputs, one call.

Cross-venue funding radar: the same perpetual's funding on Hyperliquid, dYdX, Bybit and Binance, normalised to one hourly basis and annualised, with mark price and open interest side by side, plus the cheapest venue to be long and the richest to be short.

Fetches a country's capital from the countriesnow API by country name, returning country and capital fields 🆓 5 free trial calls per signed wallet

Base32 encode/decode.

Solve the 24 Game puzzle — find expressions that evaluate to 24.

One normalized read of a Polymarket market across three upstreams — Gamma (outcome prices, best bid/ask, spread, 24h volume, liquidity, tick size), CLOB (the top three order-book levels on each side, correct end of the book) and Data API v2 (open interest). Returns age_seconds so staleness is visible, and never places orders. Pass `market` as a slug or 0x… conditionId; add `token` to pick a specif

Decode ABI-encoded calldata into human-readable arguments.

EU market brief — 4 European equity indices (price + % change), the ECB's daily reference rates for USD, GBP, CHF, JPY and CNY, and the latest ECB press releases, speeches and interviews. No inputs, one call.

Cartesian product of two or more sets. Input: sets (array of arrays, or pipe-separated strings). Output: array of tuples.

Computes the cash conversion cycle as daysInventory plus daysReceivables minus daysPayables 🆓 5 free trial calls per signed wallet

Computes Euclidean distance between points (x1, y1) and (x2, y2) using Math.hypot 🆓 5 free trial calls per signed wallet

Combined domain check: SSL cert validity (issuer, expiry, days remaining) + HTTP headers. Two checks, one call. $0.01/call, 5 free trials.

Calls name() on a token contract and returns the decoded name for the chosen chain 🆓 5 free trial calls per signed wallet

Converts an integer value into its Gray code by XORing it with itself shifted right one bit 🆓 5 free trial calls per signed wallet

Returns the newline-separated lines of text that contain the given pattern or search string 🆓 5 free trial calls per signed wallet

Tests whether the square of an integer ends with the decimal digits of that integer 🆓 5 free trial calls per signed wallet

Tests whether an integer is powerful, meaning every one of its prime factors appears to at least the second power 🆓 5 free trial calls per signed wallet

Tests whether g is a primitive root modulo p by checking g to the power phi over prime factors 🆓 5 free trial calls per signed wallet

Share of words in a text that equal the given keyword, case-insensitive. Inputs: text, keyword. Output: 0 to 1.

Returns the full English month name for a 1-based month number 1-12; a missing or out-of-range month is a caller error (400).

Rolling sum over a numeric array with a fixed window (default 3). Inputs: values (array), window.

Search Google News RSS by topic or keyword; free, no API key. Inputs: topic (or query/q), count (1-20, default 10).

Abbreviates a number with K, M, B, or T suffixes and two decimals 🆓 5 free trial calls per signed wallet

Sends a HEAD request to a host and returns reachability, HTTP status and latency 🆓 5 free trial calls per signed wallet

Powers of a base: base^0 through base^(count-1). Inputs: base (default 2), count (default 10, max 2000).

Sorts an array of numeric values ascending with a quicksort partition scan 🆓 5 free trial calls per signed wallet

Computes R-squared comparing actual and predicted arrays via residual and total sums of squares; the arrays must be the same length, and a constant actual array yields null 🆓 5 free trial calls per signed wallet

Divide two numbers and return a/b as a decimal. Inputs: a (numerator), b (denominator).

Computes years to double by dividing 72 by a rate, rounded to two decimals 🆓 5 free trial calls per signed wallet

Rounds a number to a requested number of significant digits 🆓 5 free trial calls per signed wallet

Compares two strings lexicographically and returns 0 when equal, -1 when a sorts first, else 1 🆓 5 free trial calls per signed wallet

Remove HTML/XML tags from text and return the remaining characters. Input: text. Output: the stripped string.

Returns the text before the first occurrence of a separator, or the whole text if absent 🆓 5 free trial calls per signed wallet

Fraction of a text's letters that are uppercase, ignoring non-letters. Input: text. Output: 0 to 1.

Combined domain check: SSL cert validity (issuer, expiry, days remaining) + HTTP headers. Two checks, one call. $0.01/call, 5 free trials.

Lexicon-based analysis.

Hex 编解码——text→hex 编码，或 hex→utf8 解码。纯内置，无外部依赖。

Minimax-optimal tic-tac-toe move (per turn)

Generate a random company name.

Convert a date to Unix timestamp.

Markov-chain RPS strategy from opponent history

AI prompt template library.

Convert hectares to acres.

Chebyshev polynomials.

Sum of an arithmetic series.

Score an answer against expected keywords.

Summarize a text with AI.