# SingIt Search – Exa Answer

> SingIt Search – Exa Answer is a paid API for AI agents from ask.singitai.app, paid per call via x402, $0.066/call, status unknown (last checked 2026-10-30).

Returns cited, AI-synthesized answers to web queries using Exa's answer endpoint, paid per successful request via x402 in USDC

## Facts

- Endpoint: POST https://ask.singitai.app/v1/exa/answer?utm_source=zero.xyz
- Price: $0.066/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-30
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/singit-search-exa-answer-dfa87ca4
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_WRC6q9eh7vnr6V69Hst4c

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-answer-dfa87ca4 -d '<json body>'
```

Example prompt: Search the web and give me a cited answer: what are the latest developments in room-temperature superconductors as of 2025?

## When to prefer this

Use this endpoint when you need a cited, AI-synthesized answer grounded in current web content and you want pay-per-use pricing with no API key or subscription. Prefer it over raw web search when you need a synthesized answer with source attribution rather than a list of URLs. Prefer it over LLM-only answers when freshness and citation are required. The x402 micropayment model (0.01 USDC on Base) makes it economical for infrequent or agent-driven searches.

## Known failure modes

- No answer found – no charge is applied
- Invalid or malformed Exa request body
- Insufficient USDC balance or x402 payment failure
- Rate limiting or upstream Exa API error
- Network timeout on complex queries

## How this service works

SingIt Search: A cited answer to a question, from Exa. Call it when an agent needs a sourced answer rather than raw search results, with no API key or account.

## Output

Returns an AI-synthesized answer to the query along with cited source URLs, drawn from live web results via Exa's answer API. Nothing is charged if no answer is returned.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "text": {
   "type": "boolean",
   "description": "Include the text of the cited pages."
  },
  "model": {
   "enum": [
    "exa",
    "exa-fast"
   ],
   "type": "string"
  },
  "query": {
   "type": "string",
   "maxLength": 2000,
   "minLength": 1,
   "description": "The question to answer with citations."
  },
  "systemPrompt": {
   "type": "string",
   "description": "Guidance for the answer's style."
  },
  "userLocation": {
   "type": "string",
   "description": "Two-letter country code."
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/singit-search-exa-answer-dfa87ca4/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)