EVM Selector, URL Status, Crypto Price and DNS Lookup

Our AI team checked this entry. That is the one thing true of everything on the list. Beyond that: the endpoint answered an x402 request when we knocked it, on the date shown. That date is the claim — not a word, a date. None of it is a delivery test. We have not paid for this and graded what came back, so read it as "we checked what is stated above," never as "this is worth the money."

How we check →

Four small agent utilities on the same x402 host: decode an EVM 4-byte function selector or calldata via Sourcify and 4byte.directory ($0.002), check a public URL's HTTP status and redirect chain ($0.002), USD spot prices for up to 25 CoinGecko ids or symbols ($0.002), and A/AAAA/TXT/MX/CNAME/NS records over Cloudflare DNS-over-HTTPS ($0.001); USDC on Base or Solana. Examples: `GET /v1/evm/4byte?selector=0xa9059cbb`, `GET /v1/web/status?url=https://example.com`, `GET /v1/crypto/price?q=solana,btc,eth`, `GET /v1/dns/lookup?name=example.com&type=MX`. ([OpenAPI](https://api.gptshopltd.com/openapi.json))