{
  "x402Version": 2,
  "id": 327,
  "slug": "327",
  "resource": "https://api.kadec0.xyz/v1/serp-multi",
  "description": "Multi-engine web search (metasearch). One search query fanned out across 2-3 search engines (Brave, Yahoo, Yandex) with results deduplicated by URL and merged by reciprocal-rank fusion: consensus ranking across engines instead of one engine's bias, with per-engine rank attribution on every result.",
  "type": "http",
  "accepts": [
    {
      "scheme": "exact",
      "network": "eip155:8453",
      "payTo": "0x4df66B6c140778fe0717880A7c6dDE5Ea53AcDeA",
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "amount": "50000",
      "maxTimeoutSeconds": 300
    }
  ],
  "outputSchema": {
    "bazaar": {
      "info": {
        "input": {
          "method": "GET",
          "queryParams": {
            "engines": "yahoo,yandex",
            "q": "best vector database 2026"
          },
          "type": "http"
        },
        "output": {
          "example": {
            "count": 2,
            "items": [
              {
                "engines": [
                  {
                    "engine": "yahoo",
                    "resultCount": 10
                  },
                  {
                    "engine": "yandex",
                    "resultCount": 10
                  }
                ],
                "mergedCount": 14,
                "query": "best vector database 2026",
                "type": "serp_multi"
              },
              {
                "engineRanks": {
                  "yahoo": 1,
                  "yandex": 3
                },
                "engines": [
                  "yahoo",
                  "yandex"
                ],
                "rank": 1,
                "snippet": "A comparison of...",
                "title": "Vector DB Comparison",
                "type": "search_result",
                "url": "https://example.com/vectordb"
              }
            ]
          },
          "type": "json"
        }
      },
      "schema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "input": {
            "additionalProperties": false,
            "properties": {
              "method": {
                "enum": [
                  "GET",
                  "HEAD",
                  "DELETE"
                ],
                "type": "string"
              },
              "queryParams": {
                "properties": {
                  "engines": {
                    "description": "comma list of 2-3 engines: yahoo, yandex (web mode). news mode has a single live engine (bing), so multi-engine is web-only",
                    "type": "string"
                  },
                  "mode": {
                    "default": "web",
                    "enum": [
                      "web",
                      "news"
                    ],
                    "type": "string"
                  },
                  "num_results": {
                    "default": "10",
                    "description": "max results per engine, cap 25",
                    "type": "string"
                  },
                  "q": {
                    "description": "search query",
                    "type": "string"
                  },
                  "region": {
                    "default": "us-en",
                    "description": "locale, e.g. us-en, uk-en, de-de",
                    "type": "string"
                  },
                  "safesearch": {
                    "default": "moderate",
                    "enum": [
                      "on",
                      "moderate",
                      "off"
                    ],
                    "type": "string"
                  },
                  "timelimit": {
                    "description": "restrict to past day/week/month/year",
                    "enum": [
                      "d",
                      "w",
                      "m",
                      "y"
                    ],
                    "type": "string"
                  }
                },
                "required": [
                  "q",
                  "engines"
                ],
                "type": "object"
              },
              "type": {
                "const": "http",
                "type": "string"
              }
            },
            "required": [
              "type",
              "method"
            ],
            "type": "object"
          },
          "output": {
            "properties": {
              "example": {
                "type": "object"
              },
              "type": {
                "type": "string"
              }
            },
            "required": [
              "type"
            ],
            "type": "object"
          }
        },
        "required": [
          "input"
        ],
        "type": "object"
      }
    }
  },
  "tags": [
    "bazaar"
  ],
  "sourceHost": "api.kadec0.xyz",
  "lastUpdated": "2026-09-15T16:57:32.886Z",
  "quality": {
    "calls30d": 21,
    "uniquePayers30d": 2,
    "lastCalledAt": "2026-09-15T16:57:54.374Z"
  },
  "liveness": {},
  "verified": false,
  "featured": false,
  "provider": {
    "host": "api.kadec0.xyz",
    "manifest_name": "api.kadec0.xyz",
    "source": "cdp-mirror",
    "source_manifest_url": "https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources",
    "submitted_at": "2026-09-18T22:00:31.484Z"
  }
}