Look up US colleges by name via the Dept. of Education College Scorecard: state, out-of-state tuition, overall admission rate, and undergraduate size. Live gov data. ?name=Stanford&limit=5

Convert a color between hex, RGB, and HSL. Accepts "#1a2b3c", "rgb(26,43,60)", or "hsl(210,40%,17%)".

Simulate how a color appears to viewers with protanopia (red-blind), deuteranopia (green-blind), or tritanopia (blue-blind) — the three dichromacy types covering ~8% of men and ~0.5% of women. Returns the simulated RGB plus the contrast ratio agai...

Compute the WCAG 2.x contrast ratio between two colors (hex #rgb or #rrggbb) and whether it passes AA/AAA for normal and large text. Deterministic — for accessible color choices without a tool in the loop.

Convert a color between every common notation (hex, rgb, hsl, oklch) at once, plus return the nearest CSS named color. Accepts input as hex (#fff or #ffffff), rgb()/rgba(), hsl()/hsla(), oklch(), or any of the 148 CSS named colors. Use this when a...

Two-way CSS named color tool. Pass a name (e.g. "rebeccapurple") to get its canonical RGB/hex; pass a hex/rgb color to get the closest CSS named color and the distance (RGB Euclidean, 0 = exact match). Useful when an agent needs to convert designe...

Generate a coordinated palette from a base color using a named color-theory scheme: complementary (2 colors), analogous (3), triadic (3), tetradic (4), split-complementary (3), or monochromatic (5 lightness variants). Returns each color in hex, rg...

Compute combinations C(n, r) or permutations P(n, r) using BigInt for exact arbitrary-precision results. Returns the result as a string (since values can exceed Number.MAX_SAFE_INTEGER) and a human-readable formula.

Key financial metrics (Revenue, Net Income, Operating Income, Total Assets, Liabilities, Equity, EPS, Operating Cash Flow) for a US public company in one call. Returns the latest annual and quarterly values from SEC XBRL filings. No XBRL knowledge...

Compute future value of a principal under compound interest. Returns future value, total interest earned, and the effective annual rate (APY) given the compounding frequency. Matches Excel's FV(rate, nper, 0, -principal) and the classic (1+r/n)^(n...

Run the same input through gzip, brotli, and raw deflate at max settings and report each one's output size and ratio. Use this to decide which algorithm to actually use — the answer depends on your content (binary often resists compression entirel...

Compare two strings in constant time using node:crypto timingSafeEqual, preventing timing side-channel attacks. Returns whether the strings are equal and whether their lengths match. Different-length strings are always unequal but comparison does ...

Fetch the verified ABI for a contract address from Sourcify, plus a ready-to-use list of human-readable function signatures with their 4-byte selectors. Covers 8 EVM mainnets. Unverified contracts return a structured {verified:false} miss. Pair wi...

Fetch the verified Solidity source files and compiler metadata for a contract address from Sourcify's open verification repository. Covers 8 EVM mainnets (ethereum, base, polygon, arbitrum, optimism, bsc, gnosis, celo). Contracts that were never v...

Convert acres to hectares (area). Pass ?value=N.

Convert acres to square centimeters (area). Pass ?value=N.

Convert acres to square feet (area). Pass ?value=N.

Convert acres to square inches (area). Pass ?value=N.

Convert acres to square kilometers (area). Pass ?value=N.

Convert acres to square meters (area). Pass ?value=N.

Convert acres to square miles (area). Pass ?value=N.

Convert acres to square millimeters (area). Pass ?value=N.

Convert acres to square yards (area). Pass ?value=N.

Convert arcminutes to arcseconds (angle). Pass ?value=N.

Convert arcminutes to degrees (angle). Pass ?value=N.

Convert arcminutes to gradians (angle). Pass ?value=N.

Convert arcminutes to radians (angle). Pass ?value=N.

Convert arcminutes to turns (angle). Pass ?value=N.

Convert arcseconds to arcminutes (angle). Pass ?value=N.

Convert arcseconds to degrees (angle). Pass ?value=N.

Convert arcseconds to gradians (angle). Pass ?value=N.

Convert arcseconds to radians (angle). Pass ?value=N.

Convert arcseconds to turns (angle). Pass ?value=N.

Convert astronomical units to centimeters (length). Pass ?value=N.

Convert astronomical units to feet (length). Pass ?value=N.

Convert astronomical units to furlongs (length). Pass ?value=N.

Convert astronomical units to inches (length). Pass ?value=N.

Convert astronomical units to kilometers (length). Pass ?value=N.

Convert astronomical units to light years (length). Pass ?value=N.

Convert astronomical units to meters (length). Pass ?value=N.

Convert astronomical units to micrometers (length). Pass ?value=N.

Convert astronomical units to miles (length). Pass ?value=N.

Convert astronomical units to millimeters (length). Pass ?value=N.

Convert astronomical units to nanometers (length). Pass ?value=N.

Convert astronomical units to nautical miles (length). Pass ?value=N.

Convert astronomical units to yards (length). Pass ?value=N.

Convert atmospheres to bars (pressure). Pass ?value=N.

Convert atmospheres to kilopascals (pressure). Pass ?value=N.

Convert atmospheres to mmhg (pressure). Pass ?value=N.

Convert atmospheres to pascals (pressure). Pass ?value=N.