# Linkup AI Web Search (via vaaya.ai)

> Linkup AI Web Search (via vaaya.ai) is a paid API for AI agents from vaaya.ai, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-15).

AI-powered web search that returns a synthesized cited answer, ranked raw results, or structured output for a given query, with optional date range and domain filtering.

## Facts

- Endpoint: POST https://vaaya.ai/api/run/linkup/search
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/linkup-ai-web-search-via-vaaya-ai-297b943a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_I0e7cUTkdDOYDCNjQteQi

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability linkup-ai-web-search-via-vaaya-ai-297b943a -d '<json body>'
```

Example prompt: Search the web for the latest developments in quantum computing and give me a cited answer summarizing what's happened in the last 30 days — include inline citations and exclude Wikipedia.

## When to prefer this

Choose this endpoint when you need a fast, single-pass AI-synthesized answer from the live web with source citations, optionally filtered by date or domain. Prefer it over raw keyword search APIs (e.g. Brave) when you want an LLM-synthesized answer rather than a list of links. Use it over the deep-search variant for standard questions where cost matters ($0.01 vs $0.05). Choose it over static knowledge bases when you need current, real-time information.

## Known failure modes

- Empty or vague query returns low-quality or no results
- Date range filters that are too narrow may return zero results
- Domain inclusion/exclusion filters that conflict or are too restrictive may yield no hits
- Multi-hop or complex reasoning questions may produce shallow answers — escalate to deep-search endpoint
- Malformed structuredOutputSchema JSON string causes structured output to fail
- Rate limiting or payment failure via x402 protocol blocks the request

## How this service works

Linkup — AI web search returning a cited answer or ranked results. Pass `q`; optional `outputType` (sourcedAnswer default — synthesized answer with sources | searchResults — raw ranked hits | structured — pass `structuredOutputSchema` JSON-schema string), `fromDate`/`toDate` (ISO), `includeDomains`/`excludeDomains`, `includeImages`, `includeInlineCitations`. Standard depth — one-pass retrieval. For hard multi-hop questions escalate to linkup/deep-search (5¢).

## Output

Returns one of: (1) a synthesized natural-language answer with cited source URLs and optional inline citations; (2) a ranked list of raw web search hits with titles, URLs, and snippets; or (3) a structured JSON object conforming to a user-supplied JSON schema, all derived from live web retrieval.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method",
    "bodyType",
    "body"
   ],
   "properties": {
    "body": {
     "type": "object",
     "$schema": "http://json-schema.org/draft-07/schema#",
     "required": [
      "q"
     ],
     "properties": {
      "q": {
       "type": "string",
       "maxLength": 4000,
       "minLength": 1
      },
      "toDate": {
       "type": "string",
       "maxLength": 30,
       "minLength": 4
      },
      "fromDate": {
       "type": "string",
       "maxLength": 30,
       "minLength": 4
      },
      "outputType": {
       "enum": [
        "sourcedAnswer",
        "searchResults",
        "structured"
       ],
       "type": "string"
      },
      "includeImages": {
       "type": "boolean"
      },
      "excludeDomains": {
       "type": "array",
       "items": {
        "type": "string"
       }
      },
      "includeDomains": {
       "type": "array",
       "items": {
        "type": "string"
       }
      },
      "includeInlineCitations": {
       "type": "boolean"
      },
      "structuredOutputSchema": {
       "type": "string",
       "minLength": 2
      }
     },
     "additionalProperties": false
    },
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "POST"
     ],
     "type": "string"
    },
    "bodyType": {
     "enum": [
      "json",
      "form-data",
      "text"
     ],
     "type": "string"
    },
    "pathParams": {
     "type": "object"
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/linkup-ai-web-search-via-vaaya-ai-297b943a/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from vaaya.ai](https://www.zero.xyz/host/vaaya.ai/llms.txt)