Applications, APIs & agent tools
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Listing ID: x402:ce1b2e78df0dda4d11b105a3489947b7a0ddce29bd5db3a2aee411491e15da38
Calculate return on investment: profit (or loss) and the percentage return relative to the initial amount invested. Use this when an agent needs…
Listing ID: x402:ce31f86a184b82216c0f1def6aeb417a9e01303762a875a8b8b0d8d087d622ef
Calculate gross profit, profit margin (profit as % of price) and markup (profit as % of cost) from a unit cost and selling price — the two numbe…
Listing ID: x402:cf4604a6b2292a3dc27d5abb2bef8db61f073edb70ad88f824afad609807f6d1
Generate cryptographically random UUIDv4s or time-sortable UUIDv7s from a real CSPRNG, and validate any UUID's format, version and variant bits.…
Listing ID: x402:d9b45d020d29e5d308ade50f8d103e7370e6fa92ca804b685c59ad32ca9cd7f4
Test a regular expression against text and see every match: the matched substring, its index, and all capture groups. Deterministic — the same p…
Listing ID: x402:e06f527896f46c9c036f34236b18427e0533b0700a2c8c788e56061ec526bce5
Query live DNS records (A, AAAA, MX, TXT, NS, CNAME, SOA) through Cloudflare's DNS-over-HTTPS resolver. Domain validation, email deliverability …
Listing ID: x402:e1906f7c02ab910b51bbb5ddac2429712848968cc8ed35ff3794da0c45fa9c7a
Parse a User-Agent header into structured data: browser (name/version), rendering engine, operating system, and device type/vendor/model. Determ…
Listing ID: x402:e1c71bc4e5a2fc205c8c3bbf8d1781d70a9770a65dded9b325b3e239b6b2985f
Build a keccak-256 sorted-pair merkle tree (OpenZeppelin convention) from a list of leaves and get the root plus a verification proof for any le…
Listing ID: x402:e2f0959e0f09f01482552e02bf1207f6b9d74cff2a1ee2ecb60583d3be57ef0a
Estimate how many tokens a text consumes for each major model family (GPT, Claude, Gemini, Llama, DeepSeek) using a character/word heuristic tha…
Listing ID: x402:e49862d82eec5a13d69f3671719b2cbd42e2ffbd0cc8680544673e155247de6a
Full registration record for a domain via RDAP (the modern WHOIS): registrar, creation/expiration/last-updated dates with days-to-expiry, namese…
Listing ID: x402:ed00ecaf3ddb088183802071d7e0e2959d1db0bab882f7df14bdc654132928a1
Fetch a URL server-side and extract its title, meta description, Open Graph and Twitter card tags, canonical URL and favicon — the data agents n…
Listing ID: x402:f1184f986ff5bd052c36c44f754a48ed457e6d76c7b401c0ad67a586646e28f3
Query the MX records for any domain via DNS-over-HTTPS: every mail exchanger with its priority, sorted so the primary (lowest number) comes firs…
Listing ID: x402:f47f68be36237a154e48d51d8a7c7e1127ee616749ff99f60e20b6862fa9fdd0
Parse a URL into all its components: protocol, hostname, port, path segments, query parameters (as a clean object), hash and credentials. Exact …
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