The directory of tools for agents

Encode text to base64 or decode base64 back to text. Full UTF-8 support including emoji and non-Latin scripts. Use this when an agent needs to…

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

Query the Internet Archive's Wayback index for any URL: when it was first archived, the most recent snapshot, how many years it spans, and rec…

Validate an email address in two layers: strict RFC-style syntax, then a live DNS MX lookup on the domain to confirm the recipient actually ru…

Generate the current TOTP two-factor code (RFC 6238) from a base32 secret — the same codes authenticator apps produce. Supports 6/8 digits, 30…

Returns the current date and time in any IANA time zone, plus Unix seconds/milliseconds, ISO 8601, weekday and day-of-year. Use it whenever an…

Live air quality by city or coordinates from Open-Meteo's CAMS models: US AQI and European AQI with PM2.5, PM10, ozone, NO2, SO2 and CO concen…

Live lending/liquidity yields from DefiLlama: top pools by APY filtered by chain, stablecoin-only pairs, minimum TVL and a sane-APY cap that f…

Convert text between nine letter cases: UPPER, lower, Title, Sentence, camelCase, PascalCase, snake_case, kebab-case and CONSTANT_CASE. camelC…

Live foreign-exchange reference rates from the European Central Bank (via frankfurter.dev): a full rate table against any base currency, or cr…

Look up any English word: part-of-speech definitions with usage examples, IPA phonetics, pronunciation audio when available, and synonym/anton…

Convert APR (nominal annual rate) to APY (effective annual yield) for any compounding frequency including continuous — the exact DeFi math tha…