Percentage calculator - percent change between two numbers, percent of a number, what percent one number is of another, and increase or decrease by a percentage

Homebrew formula info - version, description, license, dependencies and install command for any brew formula

Length converter - convert between miles, kilometers, feet, meters, inches, yards and nautical miles with all equivalents

India PIN code lookup - district, state, region and the post offices for any 6-digit pincode

RubyGems package info - latest version, downloads, authors, license, runtime dependencies and links for any Ruby gem

NuGet package info - latest stable and prerelease version, total downloads, authors, tags, license and recent stable versions for any .NET package

Marketplace and payment processor fee schedule - Amazon, eBay, Etsy, Shopify, Stripe fees as percent and fixed rates, with optional per-sale seller net

Hex package info - latest Elixir or Erlang package version, licenses, downloads, owners, retirements and mix.exs dependency snippet

Run a public GitHub repo's test, lint or build script in a disposable microVM and return structured logs and the commit

Pokemon data - types, base stats, abilities, height, weight, generation, legendary status and Pokedex entry by name or number

Audit whether a trading bot is profitable - separate deposits from PnL and rebuild round trips from records

Token holder and rug risk report - holder classification, concentration and linked-wallet clusters

Drained Solana wallet incident response - preserve evidence, find the cause and move to a clean wallet

Build an AI agent that pays with x402 - read the 402, choose accepts, sign and retry with a payment

USGS river gauge reading - latest streamflow, gage height and water temperature for a USGS site number with 2-hour change

Wikipedia pageviews for an article - daily human views, total, peak day and week-over-week attention trend for up to a year

pub.dev package info - latest Dart or Flutter package version, license, likes, 30-day downloads, pub points, dependencies and platforms

Homebrew cask info - macOS app version, download URL, sha256, homepage, auto-update flag and brew install --cask command

SaaS unit economics - LTV, LTV:CAC and CAC payback months from ARPA, margin, churn and CAC

OEE calculator from availability, performance and quality percentages