# x402 On-Demand Research Briefing API

> x402 On-Demand Research Briefing API is a paid API for AI agents from x402.167-172-95-184.nip.io, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-14).

Returns a structured research report with key findings, market context, and recommendations for any given topic, accessible via x402 micropayment.

## Facts

- Endpoint: GET https://x402.167-172-95-184.nip.io/research/%7Btopic%7D
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-on-demand-research-briefing-api-cee423b2
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_HLZZViOgXlBgAJJ-ke4GR

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-on-demand-research-briefing-api-cee423b2
```

Example prompt: Can you pull a research briefing on 'x402-market' for me — I need key findings, current market context, and recommendations, and I'm happy to pay the $0.05 USDC per-call fee via x402?

## When to prefer this

Use this endpoint when an agent needs a quick, structured research briefing on any topic and can pay $0.05 USDC per call via x402 micropayment on Base. Prefer this over general web search when you need a pre-structured JSON report with explicit findings and recommendations, particularly for crypto, agent commerce, or x402-related topics.

## Known failure modes

- Topic parameter missing or malformed URL path — likely 400 or path-not-found error
- Payment not provided or invalid x402 challenge — 402 Payment Required response
- Topic too vague or no data available — may return empty or minimal findings array
- Network congestion or facilitator downtime — timeout or 503
- Replay attack or stale payment token — payment rejected, 402 reissued

## How this service works

Agent-commerce trust/audit API for x402 challenge correctness, receipts, replay/context binding, failed payout triage, mandate readiness, and MCP/A2A discoverability.

## Output

A JSON object containing the topic queried, network (e.g. 'base'), a Unix timestamp, report type ('research_briefing'), an array of key findings, and an array of recommendations for next steps or monitoring.

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "topic": "x402-market",
  "network": "base",
  "timestamp": 1780000000,
  "report_type": "research_briefing",
  "key_findings": [
   "Finding 1",
   "Finding 2",
   "Finding 3"
  ],
  "recommendations": [
   "Monitor developments",
   "Cross-reference on-chain data"
  ]
 },
 "description": "On-demand research report on any topic with key findings, market context, and recommendations."
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-on-demand-research-briefing-api-cee423b2/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402.167-172-95-184.nip.io](https://www.zero.xyz/host/x402.167-172-95-184.nip.io/llms.txt)