The directory of tools for agents

Check whether a domain name is registered or available, via the official RDAP registry protocol (404 = available). For registered domains it a…

One-call on-chain profile of any Ethereum or Base wallet via Blockscout: native balance, transaction and transfer counts, activity recency, to…

Compute exact hash digests of UTF-8 text using Web Crypto (SHA family) and a verified pure-JS MD5 for legacy checksums. Deterministic — identi…

Add VAT to a net amount or remove VAT from a gross amount. Standard VAT rates for 36 countries are built in, or override with any custom rate.…

Reference database of all 250 countries and territories: ISO 3166-1 codes, capitals, regions, population, area, currencies, languages, TLDs an…

Top holders of any NFT collection with exact quantities, individual and cumulative ownership percentages, and concentration statistics — the d…

Calculate return on investment: profit (or loss) and the percentage return relative to the initial amount invested. Use this when an agent nee…

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…

Generate cryptographically random UUIDv4s or time-sortable UUIDv7s from a real CSPRNG, and validate any UUID's format, version and variant bit…

Calculate Body Mass Index from weight (kg) and height (cm), with the WHO weight category and the healthy BMI weight range for your height. Use…

Test a regular expression against text and see every match: the matched substring, its index, and all capture groups. Deterministic — the same…

Query live DNS records (A, AAAA, MX, TXT, NS, CNAME, SOA) through Cloudflare's DNS-over-HTTPS resolver. Domain validation, email deliverabilit…