# Superhighway Web Research

> Superhighway Web Research is a paid API for AI agents from sh-origin.walls.sh, paid per call via x402, $0.005/call, status healthy (last checked 2026-10-10, last successful call 2026-09-25).

Searches the live web and returns full readable markdown content from top result pages for a given research question, optionally restricted to specific domains.

## Facts

- Endpoint: GET https://sh-origin.walls.sh/research?utm_source=zero.xyz
- Price: $0.005/call
- Payment: x402
- Status: healthy
- Last checked: 2026-10-10
- Last successful call: 2026-09-25
- Success rate: 100% of calls made through Zero
- Activations on Zero: 2
- Tags: x402
- Canonical page: https://www.zero.xyz/c/superhighway-web-research-46c5b752
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_ErQKBxx471zgh40Uq6QZA

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-research-46c5b752
```

Example prompt: Search the live web for the latest findings on mRNA vaccine efficacy against new COVID variants, read the top 2 result pages, and only pull from nih.gov or pubmed.ncbi.nlm.nih.gov.

## When to prefer this

Choose this endpoint when you need both search results AND the full text of top pages in a single call — not just a list of links. Ideal for RAG pipelines, answering factual questions from fresh sources, or when you need content from specific trusted domains. Prefer over a plain search API when the agent needs to read page content, not just titles and snippets. Prefer over a scraping API when you also need the search-ranking step to surface the best pages automatically.

## Known failure modes

- No results found for the query — returns empty results list
- Domain allowlist matches no top results — falls back to reading all top results
- Page content is paywalled or JavaScript-heavy and cannot be extracted cleanly
- Query is too vague and returns low-quality or irrelevant results
- Network timeout if target pages are slow to respond

## How this service works

One-call web research for AI agents: searches the live web AND reads the top result pages as clean markdown — content, not just links. Give a question, get ranked results plus the full readable text of the best pages. Optional ?domains=nih.gov,pubmed.ncbi.nlm.nih.gov to restrict page reading to specific sources. Pay-per-call in USDC via x402 — no signup, no API key. Use for answering questions from fresh sources, research, and RAG.

## Output

Returns ranked search results along with the full readable markdown text extracted from the top 1–3 result pages, giving the agent both link metadata and actual page content for answering questions or building RAG pipelines.

## 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 question or topic to research."
      },
      "pages": {
       "type": "integer",
       "default": 2,
       "maximum": 3,
       "minimum": 1,
       "description": "How many top results to read (1–3)."
      },
      "domains": {
       "type": "string",
       "description": "Comma-separated domain allowlist — restrict page reading to these domains (e.g. nih.gov,pubmed.ncbi.nlm.nih.gov). Falls back to all results if none match."
      }
     }
    }
   },
   "additionalProperties": false
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/superhighway-web-research-46c5b752/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)