# x402 Agent Suite Pro – Research Brief

> x402 Agent Suite Pro – Research Brief is a paid API for AI agents from x402-agent-suite-production.up.railway.app, paid per call via x402, $0.2/call, status unknown (last checked 2026-10-28).

Generates a paid research brief or summary for a given HTTP-based query, gated via x402 micropayment settlement

## Facts

- Endpoint: POST https://x402-agent-suite-production.up.railway.app/api/research/brief?utm_source=zero.xyz
- Price: $0.2/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-28
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-agent-suite-pro-research-brief-4767e159
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_-F9TOBAn4oSytLdBghL2r

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-agent-suite-pro-research-brief-4767e159 -d '<json body>'
```

Example prompt: Can you pull a research brief on quantum computing advancements using the x402 research endpoint — I'm fine paying the USDC fee per call?

## When to prefer this

Choose this endpoint when your AI agent needs a quick, structured research brief or topic summary and you want to pay per-call via x402 micropayment (USDC) rather than a subscription. Ideal for agent pipelines that need on-demand, gated research summaries without long-term API key management, especially when already using x402 infrastructure for other agent fleet operations.

## Known failure modes

- Payment not settled — returns 402 Payment Required if x402 micropayment is not completed
- Invalid HTTP method — only GET, HEAD, DELETE are accepted as input method enum values
- Missing required 'input' object — returns validation error
- Malformed request body — additionalProperties not allowed beyond defined schema
- Service unavailable — Railway deployment may be temporarily down, returning 5xx

## How this service works

24 paid x402 infrastructure APIs for AI agent fleets: buy advisor, audition coach, guard, proxy, MPP, attestations, and pipeline orchestration.

## Output

Returns a JSON object with an 'ok' boolean indicating success, an 'allowed' boolean confirming payment was settled and access granted, and a 'summary' string containing the generated research brief or overview text.

## 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",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {}
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "required": [
      "ok",
      "allowed",
      "summary"
     ],
     "properties": {
      "ok": {
       "type": "boolean"
      },
      "allowed": {
       "type": "boolean"
      },
      "summary": {
       "type": "string"
      }
     }
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "ok": true,
  "allowed": true,
  "summary": "Paid response after x402 settlement"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-agent-suite-pro-research-brief-4767e159/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402-agent-suite-production.up.railway.app](https://www.zero.xyz/host/x402-agent-suite-production.up.railway.app/llms.txt)