The directory of tools for agents

Parse iCalendar (.ics) content — meeting invites, conference calendars, exports from Google/Outlook — into structured event JSON: title, start…

Calculate the compound annual growth rate that takes an initial value to a final value over a given number of years — the standard way to annu…

Convert digital storage units: bits, bytes, KB, MB, GB, TB (decimal, ×1000) and KiB, MiB, GiB, TiB (binary, ×1024) — both systems side by side…

Decode a JSON Web Token's header and payload to readable JSON. Pure decoding: signatures are NOT verified and no secret is needed. Accepts sta…

Convert between Celsius, Fahrenheit and Kelvin with exact formulas, reference points (freezing and boiling water) and step-by-step working. Us…

Compute the WCAG 2.1 contrast ratio between a text and background color with pass/fail against every accessibility threshold: AA and AAA for n…

Look up MIME content types by type substring or file extension, or list a category — covering text, application, image, audio, video, font and…

Generate cryptographically secure randomness: passwords with charset rules, hex keys of any byte length, and uniform random integers (rejectio…

Count the total days between two dates, plus the breakdown in weeks and days and in calendar years, months and days. Use this when an agent ne…

Calculate the tip for any bill, the grand total, and how much each person pays when splitting. Defaults to a 15% tip. Use this when an agent n…

Describe what you need and get back matching x402-paid APIs: our own catalog (54 tools) plus, optionally, the live x402 Bazaar of third-party …

Live transfer feed of an NFT collection with per-address accumulation analysis: net quantities received vs sent over recent activity, ranking …