# Otto AI Web Answer — AI-Powered Web Search Q&A

> Otto AI Web Answer — AI-Powered Web Search Q&A is a paid API for AI agents from x402.ottoai.services, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).

Answers a single concise factual or current question by searching the web and returning an AI-synthesized answer with citations

## Facts

- Endpoint: GET https://x402.ottoai.services/web-answer
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/otto-ai-web-answer-ai-powered-web-search-q-a-c5cec4a6
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_VR8pGc8pbhNUGRpUgact4

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 otto-ai-web-answer-ai-powered-web-search-q-a-c5cec4a6
```

Example prompt: What is EIP-7702 and how does it affect Ethereum EOAs? Give me a concise, sourced answer.

## When to prefer this

Use this endpoint when you need a quick, cited factual or current-events answer to a single question in natural language, especially for crypto, DeFi, or blockchain topics. Prefer it over a raw web scraper when you want an AI-synthesized answer with source citations rather than raw HTML. Ideal for questions up to 96 characters that need a grounded, up-to-date response with provenance.

## Known failure modes

- Query exceeds 96-character limit — request rejected or truncated
- Question is too vague or ambiguous — answer may be low quality or off-topic
- No web sources found for the query — empty or degraded response with meta.degraded=true
- Payment not received or USDC balance insufficient — 402 response blocking the call
- Rate limiting if too many calls in quick succession
- Answer may be stale if validUntil has passed — check meta.stalenessSec

## How this service works

Quick web answer with citations (Exa upstream): ask one factual or current question and get a concise synthesized answer plus source URLs and publication dates. Optimized for fast lookups and agent loops; use /llm-research for a deeper multi-section research report, reasoning, image analysis, or webpage summarization. Keyless, pay-per-call, cached by query.

## Output

A JSON object containing a synthesized answer string, the original query, the AI/search provider used (e.g. Exa), an array of citations with URLs and titles, a generatedAt timestamp, and metadata including a validUntil freshness window and staleness indicator.

## 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"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "query"
     ],
     "properties": {
      "query": {
       "type": "string",
       "description": "One concise factual or current question (max 96 characters)"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "required": [
      "status"
     ],
     "properties": {
      "data": {},
      "meta": {
       "type": "object"
      },
      "reason": {
       "type": "string",
       "description": "status=unavailable only; every >=400 is UNCHARGED"
      },
      "status": {
       "enum": [
        "success",
        "unavailable"
       ],
       "type": "string"
      }
     }
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "data": {
   "query": "what is eip-7702?",
   "answer": "EIP-7702 lets an Ethereum externally owned account delegate code executi...",
   "provider": "exa",
   "citations": [
    {
     "url": "https://eips.ethereum.org/EIPS/eip-7702",
     "title": "EIP-7702: Set Code for EOAs",
     "publishedDate": null
    }
   ],
   "generatedAt": "2026-07-22T12:00:00.000Z",
   "citationCount": 2
  },
  "meta": {
   "degraded": false,
   "validUntil": "",
   "generatedAt": "",
   "stalenessSec": 0
  },
  "status": "success"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/otto-ai-web-answer-ai-powered-web-search-q-a-c5cec4a6/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402.ottoai.services](https://www.zero.xyz/host/x402.ottoai.services/llms.txt)