Multi-engine web search (metasearch)
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.
Answeringour last check, 2026-09-24
1 of 1checks answered this week
167 msmedian answer time
$0.05listed price per call
$0.05price it asked us
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
GET https://api.kadec0.xyz/v1/serp-multi
| Category | Search and research |
|---|---|
| Provider host | api.kadec0.xyz |
| Networks | eip155:8453 |
| Payment schemes | exact |
| Self-reported calls, 30 days | 20 from 2 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-09-24 | valid payment request | 402 | $0.05 | 167 ms |
Example input (from the provider)
{
"method": "GET",
"queryParams": {
"engines": "yahoo,yandex",
"q": "best vector database 2026"
},
"type": "http"
}
Promised output schema (from the provider)
{
"$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"
}