Applications, APIs & agent tools
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Listing ID: x402:24e86c6e30e2c588329ead740aa2b1d872c8373c0bcc8e9f16a144f1059a017c
Explain what an EVM transaction would actually do: decodes the calldata (ERC-20 transfers/approvals via known ABIs, unknown selectors via the 4b…
Listing ID: x402:29c05115fcad1978677c85bbff41f9b044c375f4e5b1e5615a60a463273c7040
Look up an address's NFT portfolio across collections: each collection held, quantity owned, sorted by size. The enrichment endpoint for agents …
Listing ID: x402:2a5ad1926dfeb337c696f468f1758a5ce1fd1cc77be21a78bbfab6aaac8d20d6
Resolve ENS names to addresses and look up reverse records (address → ENS name) via viem against Ethereum mainnet public RPCs. ENS data lives on…
Listing ID: x402:2bb75ada2dbc2592ab86c1b49a8dfaf9f4fa87b3d3d77d19816e388af3b64ef3
European option pricing with the Black-Scholes-Merton model: exact price for calls and puts plus delta, gamma, theta, vega and rho, with dividen…
Listing ID: x402:2bf324356ca515282290646e4aa763651ca54a8b215078832606716c6cb35bbc
Inspect a live TLS certificate: subject, issuer, SAN domains, validity window, days to expiry, protocol version, cipher and the full chain lengt…
Listing ID: x402:2f3772145dd77eaa7e8a7e28a922afd292431517132b16fb1d022b80bacdde9f
Fetch a web page server-side and convert it to clean markdown — headings, links, lists, tables and text, with scripts, styles and boilerplate st…
Listing ID: x402:33a25961333e5a8bd398a4cfeea4f63672a84f9f7bab9b916bb9e4d48d02dce4
Probe a GET endpoint several times and report status codes and latency statistics (min/avg/max). The cheap way for an agent to verify an API — f…
Listing ID: x402:344a3b78dccac64dba330feef68ecdfe6368c4f91c1581920a4fe639665c6c49
Scores a password by information entropy: character-pool size, length, crack-time against an offline attack (10^10 guesses/s), and common-passwo…
Listing ID: x402:3a5bbc797b66d7bcf9c89836c276a13701e6b993ae1fd003cc608c9d548ec815
Generate a QR code for any text, URL or crypto address: returns ready-to-embed SVG markup and a data URI, with configurable size and error-corre…
Listing ID: x402:3b708a9cb9934372bf249569a3302733d13bebfcfd6cdf47ee5a1b7e37ee5877
Compare two texts line by line using an LCS diff: exact additions, removals and context — in unified-diff style. Deterministic, unlike asking a …
Listing ID: x402:3dbfe12b14c1fbac17ebc44410aa3fbe3d9ce29ac8cec5cdddd5ae86f72e4f0f
Parse a semantic version into major/minor/patch/prerelease, test it against a SemVer range (^, ~, >=, *) and compare two versions with the exact…
Listing ID: x402:43aee71d61cb9951958bb0931194f85273730f8afc97df21b2b0cdfe212f6910
Fetch the live gas price from public RPC nodes on Base or Ethereum: wei per unit gas, converted to gwei, with a USD estimate for a standard 21,0…
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