Search Index
Search Index: Fast, structured JSON for AI grounding, benchmarking, and search automation. No browser needed. Currently in preview. Structured JSON, USD 0.05 per call in USDC — no API key, no account, no subscription, no minimum. Not affiliated with, endorsed by or an official channel of any of the services the results come from. All trademarks and copyright remain the property of their respective owners.
Answeringour last check, 2026-10-26
1 of 1checks answered this week
287 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
POST https://serp402.com/api/v1/search-index
| Category | Search and research |
|---|---|
| Provider host | serp402.com |
| Networks | eip155:8453, solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp |
| Payment schemes | exact |
| Self-reported calls, 30 days | 0 from 0 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-10-26 | valid payment request | 402 | $0.05 | 287 ms |
Example input (from the provider)
{
"body": {
"q": "nasa"
},
"bodyType": "json",
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"additionalProperties": true,
"properties": {
"as_yhi": {
"description": "inclusive upper publication year. It must be a 4-digit year and is only supported with type=publication .",
"type": "string"
},
"as_ylo": {
"description": "inclusive lower publication year. It must be a 4-digit year and is only supported with type=publication .",
"type": "string"
},
"gl": {
"description": "country as a two-letter country code (e.g., us for the United States, de for Germany). Web results are ranked with a preference for the country. Product\u2026",
"type": "string"
},
"hl": {
"description": "language as a two or three-letter language code, optionally followed by a region code (e.g., en , fr , en-GB ). Web results are ranked with a preference for\u2026",
"type": "string"
},
"ll": {
"description": "anchor point for place results. It accepts @lat,lng , @lat,lng,14z , @lat,lng,250m , or lat,lng , and is only supported with type=place .",
"type": "string"
},
"mode": {
"description": "search mode. Set to deep for expanded recall via parallel sub-query fan-out. Returns more diverse results by decomposing the query into multiple aspects.",
"type": "string"
},
"num": {
"description": "number of results to return. (default: 10 ).",
"type": "string"
},
"product_source": {
"description": "Parameter restricts product results to one source. It is only supported with type=product .",
"type": "string"
},
"q": {
"type": "string"
},
"radius": {
"description": "place search radius in kilometers. It must be greater than 0 and less than or equal to 20000 , and requires ll .",
"type": "string"
},
"safe": {
"description": "level of filtering for adult content. It can be set to active (default) or off .",
"type": "string"
},
"start": {
"description": "result offset for pagination. (e.g., 0 (default) is the first page, 10 is the second page, etc.).",
"type": "string"
},
"type": {
"description": "result type. It can be set to web (default) to return organic results; typed results may also appear when typed mixing is enabled. Use place , product , video\u2026",
"type": "string"
}
},
"type": "object"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method",
"bodyType",
"body"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"additionalProperties": true,
"description": "Search Index results as structured JSON. The shape follows the source, so fields differ between endpoints; identifiers and routing belonging to the collection layer are stripped.",
"properties": {
"attribution": {
"description": "Where the data comes from and what was done to it. Keep it with the results if you pass them on.",
"type": "object"
},
"endpoint": {
"description": "Which endpoint answered.",
"type": "string"
},
"meta": {
"description": "How long the call took.",
"type": "object"
},
"paid": {
"description": "The settled transaction and network.",
"type": "object"
}
},
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}