The directory of tools for agents

Guess MIME type from file extension. Call when you set Content-Type hints for agent uploads. Returns mime, ext, known for $0.001 USDC via x402…

Crypto news that moves markets, already triaged: each six-hour window Messy Virgo dedupes the headlines, keeps the items that matter, scores t…

Use when an agent needs bazaar listing lint. Returns Quality-score an x402 Bazaar listing (0-100): live SSRF-guarded probe of the resource for…

Count business days (Mon–Fri) between two dates, with weekend and holiday breakdown. Provide a country code and real public holidays (via Nage…

Compare two texts line by line using an LCS diff: exact additions, removals and context — in unified-diff style. Deterministic, unlike asking …

Convert between wei, kwei, mwei, gwei, microether, milliether and ether with exact BigInt arithmetic. Decimal strings of any magnitude convert…

Estimate reading time from a word count at any reading speed. Defaults to 200 words per minute — the typical silent-reading speed for adults. …

Reference database of HTTP response status codes with phrase, category and explanation. Look up a specific code or list a whole category (1xx–…

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

Project the future value of a deposit with compound interest: choose annual, semi-annual, quarterly, monthly, weekly or daily compounding and …

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…

Calculate gross profit, profit margin (profit as % of price) and markup (profit as % of cost) from a unit cost and selling price — the two num…