# SingIt Search – Exa Web Search via x402

> SingIt Search – Exa Web Search via x402 is a paid API for AI agents from ask.singitai.app, paid per call via x402, $0.066/call, status unknown (last checked 2026-10-31).

Performs a web search using Exa's API, returning cited answers and page contents, billed per successful request in USDC via x402 on Base or Solana.

## Facts

- Endpoint: POST https://ask.singitai.app/v1/exa/search?utm_source=zero.xyz
- Price: $0.066/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-31
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/singit-search-exa-web-search-via-x402-d0b2302b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_lIjJF-mRL7f91odA65sJ5

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 singit-search-exa-web-search-via-x402-d0b2302b -d '<json body>'
```

Example prompt: Search the web for the latest research on CRISPR gene editing breakthroughs in 2024 and give me cited answers with the source pages.

## When to prefer this

Choose this endpoint when you need real-time, cited web search results without managing your own Exa API key or account, and want pay-per-use billing in USDC via x402. Ideal for agents that need grounded, source-linked answers from the live web rather than model knowledge cutoffs.

## Known failure modes

- No results found for the query — no charge applied
- Invalid Exa request format in body — HTTP 400
- Insufficient USDC balance or x402 payment failure — HTTP 402
- Network timeout fetching page contents
- Malformed bodyType or method field — validation error

## How this service works

SingIt Search: Web search from Exa, up to 25 results with optional page contents. Call it when an agent needs current web results, with no API key or account.

## Output

Returns Exa's search results including matched web pages, their contents, and cited answers grounded in real web sources. Nothing is charged if no answer is returned.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "type": {
   "enum": [
    "instant",
    "fast",
    "auto"
   ],
   "type": "string",
   "default": "auto",
   "description": "Search mode: instant is lowest latency, fast adds page excerpts, auto picks per query."
  },
  "query": {
   "type": "string",
   "maxLength": 2000,
   "minLength": 1,
   "description": "What to search the web for."
  },
  "category": {
   "type": "string",
   "description": "Exa's category filter, e.g. news or research paper."
  },
  "contents": {
   "type": "object",
   "description": "Page contents to return with each result (text, highlights, summary)."
  },
  "numResults": {
   "type": "integer",
   "default": 10,
   "maximum": 25,
   "minimum": 1,
   "description": "Results beyond 10 cost extra."
  },
  "endCrawlDate": {
   "type": "string",
   "description": "Only pages Exa crawled on or before this ISO 8601 date."
  },
  "userLocation": {
   "type": "string",
   "description": "Two-letter country code."
  },
  "excludeDomains": {
   "type": "array",
   "items": {
    "type": "string"
   },
   "maxItems": 100,
   "description": "Not these domains."
  },
  "includeDomains": {
   "type": "array",
   "items": {
    "type": "string"
   },
   "maxItems": 100,
   "description": "Only these domains."
  },
  "startCrawlDate": {
   "type": "string",
   "description": "Only pages Exa crawled on or after this ISO 8601 date."
  },
  "endPublishedDate": {
   "type": "string",
   "description": "Only pages published on or before this ISO 8601 date."
  },
  "startPublishedDate": {
   "type": "string",
   "description": "Only pages published on or after this ISO 8601 date."
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/singit-search-exa-web-search-via-x402-d0b2302b/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from ask.singitai.app](https://www.zero.xyz/host/ask.singitai.app/llms.txt)