# Valunaria BUS-WEB Multi-Source Research API

> Valunaria BUS-WEB Multi-Source Research API is a paid API for AI agents from x402.valunaria.com, paid per call via x402, $0.25/call, status unknown (last checked 2026-10-18).

Answers a question by extracting and synthesizing information exclusively from a provided set of up to 5 URLs, paid per call via x402/USDC on Base

## Facts

- Endpoint: POST https://x402.valunaria.com/api/v1/web/research?utm_source=zero.xyz
- Price: $0.25/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-18
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/valunaria-bus-web-multi-source-research-api-e4c3de63
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_7TsOENcIrSCgX1wrXed9Q

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 valunaria-bus-web-multi-source-research-api-e4c3de63 -d '<json body>'
```

Example prompt: Using only these three pages — https://example.com/report1, https://example.com/report2, and https://example.com/faq — answer the question: what are the main risks highlighted across all three sources?

## When to prefer this

Choose this endpoint when you need answers grounded strictly in a defined set of web sources — avoiding hallucination risk from open-ended generation. It is ideal when you have 1–5 specific URLs you trust and want a synthesized, question-specific answer drawn exclusively from their content. Prefer it over general-purpose LLM queries when source attribution and confinement matter, and over generic web scrapers when you need a synthesized answer rather than raw HTML. The x402/USDC micropayment model makes it suitable for automated, per-call agent workflows without subscription overhead.

## Known failure modes

- Payment failure via x402 prevents job creation
- URLs that are inaccessible, paywalled, or non-HTML may not be extractable
- Question exceeds 4000-character limit returns validation error
- Providing zero or more than 5 URLs fails schema validation
- Job may expire (expires_at) before result is retrieved if polling is too slow
- Bearer result token is single-use and lost if not captured at retrieval time
- Source pages with heavy JavaScript rendering may yield incomplete extractions

## How this service works

VALUNARIA BUS-WEB web.research.v1

## Output

Returns a job object containing a job_id, current status (e.g. 'queued'), a product identifier ('web.research.v1'), an expiry timestamp, a request_id, a polling URL to check job completion, and a one-time bearer token to retrieve the final research result once the job finishes.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "urls": {
   "type": "array",
   "items": {
    "type": "string",
    "format": "uri",
    "description": "Public HTTP/HTTPS source URL."
   },
   "maxItems": 5,
   "minItems": 1
  },
  "question": {
   "type": "string",
   "maxLength": 4000,
   "minLength": 1,
   "description": "Question answered only from the supplied sources."
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "job_id": "job_example",
  "status": "queued",
  "product": "web.research.v1",
  "expires_at": "2026-01-02T00:00:00.000Z",
  "request_id": "req_example",
  "status_url": "/api/v1/jobs/job_example",
  "result_token": "bearer-token-returned-once"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/valunaria-bus-web-multi-source-research-api-e4c3de63/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402.valunaria.com](https://www.zero.xyz/host/x402.valunaria.com/llms.txt)