# Superhighway Web Search API

> Superhighway Web Search API is a paid API for AI agents from sh-origin.walls.sh, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-14).

Performs real-time web searches across multiple engines and returns ranked organic results as JSON, paid per-query via USDC with no API key required.

## Facts

- Endpoint: GET https://sh-origin.walls.sh/search
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/superhighway-web-search-api-0dcd26fe
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_4vMhewnD5QwudRIxtNxzg

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 superhighway-web-search-api-0dcd26fe
```

Example prompt: Search the web for the latest news on the US Federal Reserve interest rate decision from the past week and give me the top 10 results.

## When to prefer this

Choose this endpoint when an AI agent needs live, real-time web search results without the friction of API key signup or rate limits. It is ideal for RAG pipelines, agent grounding, fact-checking, and research tasks where freshness matters. The pay-per-query USDC model via x402 makes it well-suited for autonomous agents with crypto wallets. Prefer this over static knowledge bases when the query requires information newer than the agent's training cutoff, or when multi-engine coverage improves result diversity and reliability.

## Known failure modes

- Payment failure if USDC balance is insufficient or x402 payment is rejected
- Empty results if the query matches no indexed content
- Timeout or upstream engine failure if one or more search engines are unavailable
- Query too vague or ambiguous returning low-quality snippets
- Invalid 'time' enum value causing a parameter error
- 'limit' out of range (must be 1–20) causing a validation error

## How this service works

Real-time web search API for AI agents. Returns ranked organic results (title, link, snippet) as JSON from a resilient multi-engine metasearch (Bing, Brave, DuckDuckGo, Wikipedia, Mojeek). Pay-per-query in USDC via x402 — no signup, no API key, no rate limits. Built for agent grounding, research, RAG, fact-checking, and fresh real-world information.

## Output

A JSON array of ranked organic search results, each containing a title, URL link, and text snippet, ordered by relevance. Results are drawn from a multi-engine metasearch (Bing, Brave, DuckDuckGo, Wikipedia, Mojeek) and reflect live, real-time web content. The number of results is configurable up to 20.

## 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": [
      "q"
     ],
     "properties": {
      "q": {
       "type": "string",
       "description": "The search query."
      },
      "time": {
       "enum": [
        "day",
        "week",
        "month",
        "year"
       ],
       "type": "string",
       "description": "Filter results by recency. day=last 24h, week=last 7 days, month=last 30 days, year=last 12 months."
      },
      "limit": {
       "type": "integer",
       "default": 5,
       "maximum": 20,
       "minimum": 1,
       "description": "Max results."
      }
     }
    }
   },
   "additionalProperties": false
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/superhighway-web-search-api-0dcd26fe/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from sh-origin.walls.sh](https://www.zero.xyz/host/sh-origin.walls.sh/llms.txt)