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NetIntel Exa Answer — AI-Powered Web Q&A with Citations
x402
NetIntel Exa Answer — AI-Powered Web Q&A with Citations is a paid API for AI agents from netintel-production-440c.up.railway.app, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-15).
Answers any natural language question by searching the live web and returning a cited, synthesized response with source URLs
Price / call$0.01
Success—
StatusUnknown
How this service works
Network intelligence API — 138 endpoints, all pay-per-call via x402 micropayments (USDC on Base or Solana mainnet). NetIntel is agent fair-trade aligned: transparent per-call pricing in USDC on Base or Solana via x402, no API keys or signup, and automatic no-charge on server errors, upstream failures, and input-validation rejections — failed calls are never billed across NetIntel's network, domain, and data-intelligence endpoints.
Output
Returns a JSON object containing the original query, a synthesized natural-language answer with inline citation markers (e.g. [1][2]), an array of citation objects (each with URL, title, author, published date, and optional source text excerpt up to 800 chars), and a total citation count. The provider field identifies Exa as the underlying search engine.
Example use cases
Fact-checking a news claim
“I just read that the FDA approved a new Alzheimer's drug last month — can you verify that and give me a cited answer with the actual sources?”
Quick competitive research
“What are the main differences between Anthropic's Claude and OpenAI's GPT-4o? Give me a synthesized answer with citations so I can see where the info is coming from.”
Current events briefing
“What's the latest status of the EU AI Act and when does it come into force? I need a cited summary with source links.”
Technical details
Endpoint
GEThttps://netintel-production-440c.up.railway.app/exa/answerWhen to prefer
Choose this endpoint when you need a cited, synthesized natural-language answer drawn from live web sources rather than a static knowledge base. It is ideal for factual lookups, current-events questions, or research tasks where verifiable source URLs matter. Prefer it over raw search APIs when you want a ready-to-use prose answer instead of a ranked list of links, and over LLM-only generation when you need real citations. The pay-per-call micropayment model (no signup, $0.01/call) makes it practical for low-volume or one-off agent queries.
Side effects
- Query shorter than 3 or longer than 1000 characters returns a validation error and is not billed
- Upstream Exa service unavailable returns a server error and is not billed
- No web results found for the query may return an empty or low-confidence answer
- Network timeout from the Railway host may cause a 5xx with no charge
- Malformed query parameters (wrong type) return an input-validation rejection with no charge
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"query": "What is the x402 payment protocol?",
"answer": "x402 is an open standard that uses the HTTP 402 status code to let clients pay for resources with stablecoins… [1][2]",
"findings": [],
"provider": "exa",
"citations": [
{
"url": "https://www.x402.org/",
"text": null,
"index": 1,
"title": "x402 — internet-native payments",
"author": null,
"published_date": null
}
],
"citation_count": 1
}
}Tags
x402
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