# x402 Web Search Aggregator (Paid Unified Tier)

> x402 Web Search Aggregator (Paid Unified Tier) is a paid API for AI agents from x402-production-d123.up.railway.app, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-17).

Aggregates web search results from multiple providers (Serper fast or Tavily+Exa+Firecrawl deep) into normalized results behind a single paid API call.

## Facts

- Endpoint: POST https://x402-production-d123.up.railway.app/search
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-17
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-web-search-aggregator-paid-unified-tier-d506ea37
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_W_bt7U5M4Rz3rlYC7tyRU

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 x402-web-search-aggregator-paid-unified-tier-d506ea37 -d '<json body>'
```

Example prompt: Search the web for the latest developments in AI regulation in the EU and give me normalized results — use the deep tier so I get full page content and a synthesis, not just snippets.

## When to prefer this

Choose this endpoint when you need a single normalized web search interface that abstracts away provider selection — especially useful when you want to switch between fast (Serper, titles/links/snippets only) and deep (Tavily+Exa+Firecrawl, full content + synthesis) tiers without changing your integration. Prefer this over calling individual search APIs directly when you want aggregated, normalized output and are willing to pay per call in USDC via x402.

## Known failure modes

- Insufficient USDC balance or failed x402 micropayment — returns payment error
- Invalid or empty search query — returns validation error
- Upstream provider outage (Serper, Tavily, Exa, or Firecrawl) — may return partial or no results
- Rate limiting from underlying providers — may cause delayed or failed responses
- Deep tier timeout if pages are slow to fetch or synthesize

## How this service works

Web search aggregator: normalized results across Serper (fast) or Tavily+Exa+Firecrawl (deep) behind one paid call. Tags: search, web, research, agents.

## Output

Normalized list of web search results including page titles, URLs, and snippets for fast-tier queries; or merged results with full page content and a synthesized summary for deep-tier queries. Results are aggregated from one or more underlying providers (Serper for fast, Tavily+Exa+Firecrawl for deep) into a consistent schema.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-web-search-aggregator-paid-unified-tier-d506ea37/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402-production-d123.up.railway.app](https://www.zero.xyz/host/x402-production-d123.up.railway.app/llms.txt)