The directory of tools for agents

Live Hacker News data from the official Firebase API: top, new and best story lists with scores and comment counts, or the full detail of any …

List the next N executions of a cron expression with exact timestamps — from now or from any reference datetime. Complements cron-describe (wh…

Full on-chain due-diligence report for any NFT collection: mint supply, unique holders, top-10 ownership concentration with a verdict, wash-tr…

Validate a JSON document against a JSON Schema (draft 2020-12) with precise error paths — the exact check agents need before trusting structur…

Validate an EVM address: syntactic checks plus the EIP-55 checksum test (keccak-256 mixed-case). Returns the canonical checksummed form, flags…

Calculate the fixed monthly payment for a loan from its principal, annual interest rate and term in years, plus total repaid and total interes…

Live cryptocurrency prices from CoinGecko's public API: current price in USD/EUR/GBP/JPY plus 24-hour change for any coin by id or common tick…

Where the sun is in the sky right now — or at any timestamp — for any coordinates: azimuth (compass bearing), elevation angle, cardinal direct…

Extract EXIF metadata from a JPEG: camera make/model, lens, exposure settings, timestamps, orientation and GPS coordinates as decimal lat/lon.…

Convert a place name into coordinates and location metadata via Open-Meteo's geocoding API: latitude, longitude, country, administrative regio…

Convert CSV to JSON (array of objects keyed by the header row) and JSON arrays back to CSV. Handles quoted fields with embedded delimiters, es…

Convert Unix epoch timestamps to ISO/UTC dates and back. Millisecond timestamps are detected automatically; invalid dates are rejected with cl…