# ONE Engine Basic Web Search

> ONE Engine Basic Web Search is a paid API for AI agents from one-search.one-engine.workers.dev, paid per call via x402, $0.008/call, status unknown (last checked 2026-10-02).

Performs a low-cost web search query and returns ranked results with titles, links, and snippets for autonomous agents.

## Facts

- Endpoint: POST https://one-search.one-engine.workers.dev/v1/search/basic?utm_source=zero.xyz
- Price: $0.008/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/one-engine-basic-web-search-2b09e631
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_A2Y7OmBXgRzT-mYiqEe48

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 one-engine-basic-web-search-2b09e631 -d '<json body>'
```

Example prompt: Search the web for 'latest AI agent infrastructure frameworks 2024' and bring back the top results with links and snippets.

## When to prefer this

Choose this endpoint when you need cheap, pay-per-call web search results inside an autonomous agent pipeline, especially when operating on Base with x402 micropayments. Ideal for agents that need occasional web lookups without a subscription, or when cost-per-query needs to be tightly controlled at $0.008 USDC. Prefer over subscription-based search APIs when call volume is unpredictable or low.

## Known failure modes

- Query string empty or exceeds 500 characters — likely 400 validation error
- Payment not attached or insufficient — 402 Payment Required response
- Upstream search index temporarily unavailable — 500 or timeout
- No results found for highly obscure queries — empty results array returned

## How this service works

Low-cost pay-per-call utility APIs for autonomous agents using x402 on Base.

## Output

Returns a JSON object containing the query tier ('basic'), the echoed query string, and an array of search results each with a link (URL), title, and snippet (short text excerpt from the page).

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "limit": {
   "type": "integer",
   "maximum": 10,
   "minimum": 1,
   "description": "Maximum number of ranked results to return"
  },
  "query": {
   "type": "string",
   "description": "Web search query, 1-500 characters"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "tier": "basic",
  "query": "latest AI agent infrastructure",
  "results": [
   {
    "link": "https://example.com",
    "title": "Example result",
    "snippet": "Example search result"
   }
  ]
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/one-engine-basic-web-search-2b09e631/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from one-search.one-engine.workers.dev](https://www.zero.xyz/host/one-search.one-engine.workers.dev/llms.txt)