{
 "id": "1b6cd45e2c88",
 "url": "https://api.duoleads.com/v1/chain/selector",
 "host": "api.duoleads.com",
 "method": "GET",
 "type": "http",
 "x402Version": 2,
 "scheme": "exact",
 "network": "eip155:8453",
 "net": "base",
 "testnet": false,
 "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
 "price_atomic": "50000",
 "price_usd": 0.05,
 "band": "1c-10c",
 "payTo": "0xCD673f7e1daD254347AEab6be0DEFe8b9C6b3A39",
 "networks": [
  "eip155:8453"
 ],
 "description": "Compute the Keccak-256 hash of a Solidity function or event signature and derive the 4-byte function selector and the 32-byte event topic. Normalises the signature first — strips parameter names, expands uint to uint256 and the other aliases, flattens tuples — so a signature copied from source code produces the same selector as the canonical form. Also hashes arbitrary text or hex bytes with Keccak-256.",
 "serviceName": "Duo Data Utilities",
 "tags": [
  "deterministic",
  "no-api-key",
  "chain",
  "blockchain",
  "solidity"
 ],
 "mimeType": null,
 "iconUrl": null,
 "bazaar": {
  "info": {
   "input": {
    "method": "GET",
    "queryParams": {
     "signature": "transfer(address,uint256)"
    },
    "type": "http"
   },
   "output": {
    "type": "json",
    "example_truncated": true,
    "chars": 764
   }
  },
  "has_schema": true
 },
 "quality": {
  "calls30": 1,
  "payers30": 1,
  "lastCalledAt": "2026-09-28T23:39:24.435Z"
 },
 "catalogs": [
  {
   "name": "cdp",
   "lastUpdated": "2026-09-28T23:39:24.538Z",
   "seen_at": "2026-09-30T23:10:40.669Z"
  },
  {
   "name": "payai",
   "lastUpdated": "2026-09-29T00:55:21.219Z",
   "seen_at": "2026-09-30T23:10:40.669Z"
  }
 ],
 "catalog_names": [
  "cdp",
  "payai"
 ],
 "first_seen_catalog": "2026-09-28T23:39:24.538Z",
 "last_updated_catalog": "2026-09-29T00:55:21.219Z",
 "first_seen": "2026-09-30",
 "templated": false,
 "category": "dev-tools/utilities",
 "probe": null,
 "onchain": {
  "resolved": true,
  "source": "blockscout-sample",
  "payers": 1,
  "payments": 50,
  "usd": 2.5,
  "median_usd": null,
  "first": "2026-09-29T00:16:55.000000Z",
  "last": "2026-09-29T21:31:59.000000Z",
  "sampler_share": null,
  "non_sampler_payers": null,
  "sample": {
   "page_items": 50,
   "usdc_items": 50,
   "x402_shaped": 50,
   "has_more": true,
   "note": "newest page of inbound ERC-20 transfers only (<=50); counts are a floor, not a total"
  },
  "name": null
 },
 "status": "unprobed",
 "valid_402": false,
 "dead": false,
 "verdict": "unprobed",
 "live_reprobe": null,
 "featured": null,
 "page": "https://bazaar.agentexchange.work/r/1b6cd45e2c88",
 "seller": "https://bazaar.agentexchange.work/seller/api.duoleads.com",
 "seller_json": "https://bazaar.agentexchange.work/seller/api.duoleads.com.json",
 "paid": {
  "probe_now": {
   "url": "https://bazaar.agentexchange.work/r/1b6cd45e2c88/probe.json",
   "price_usd": 0.01,
   "protocol": "x402"
  },
  "feature": {
   "url": "https://bazaar.agentexchange.work/featured",
   "method": "POST",
   "body": {
    "id": "1b6cd45e2c88"
   },
   "price_usd": 1,
   "protocol": "x402"
  }
 },
 "license": "CC BY 4.0"
}