# x402 Agent Suite Pro — Proxy Endpoint

> x402 Agent Suite Pro — Proxy Endpoint is a paid API for AI agents from x402-agent-suite-production.up.railway.app, paid per call via x402, $0.08/call, status unknown (last checked 2026-09-14).

Acts as a paid x402-protocol proxy that forwards HTTP GET/HEAD/DELETE requests through the x402 payment infrastructure, returning security analysis and access results after payment settlement.

## Facts

- Endpoint: POST https://x402-agent-suite-production.up.railway.app/api/x402/proxy
- Price: $0.08/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-agent-suite-pro-proxy-endpoint-55a936e1
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_mE3IP90EZ8O0JYD6jUR-M

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-proxy-endpoint-55a936e1 -d '<json body>'
```

Example prompt: Check whether this API endpoint is accessible and safe to call by routing a GET request through the x402 proxy — I want to see its security grade, risk score, and whether it requires payment before I let my agent fleet use it.

## When to prefer this

Choose this endpoint when your AI agent needs to route HTTP read-only requests (GET/HEAD/DELETE) through a payment-settled x402 proxy with built-in security analysis. It is especially useful when you need to audit an unknown endpoint's risk score and security grade before integrating it into an agent fleet, or when the target endpoint itself requires x402 payment to access. Prefer this over raw HTTP calls when payment settlement, security grading, and access control validation are all needed in a single step.

## Known failure modes

- Payment settlement failure — x402 payment header invalid or insufficient USDC balance, returns 402 with payment required details
- Method not allowed — only GET, HEAD, DELETE are accepted; POST or PUT inputs return validation error
- Target unreachable — proxied target URL is offline or times out, returns error in summary field
- Invalid input schema — missing required 'type' or 'method' fields returns 400 bad request
- Access denied — target endpoint blocked even after payment, allowed=false in response

## 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: ok (boolean), allowed (boolean indicating post-payment access), summary (human-readable explanation), securityGrade (letter grade), riskScore (numeric), and targetProbe object containing the HTTP status, requiresPayment flag, and priceUsdc of the target endpoint.

## 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": [
      "status",
      "ok",
      "allowed",
      "summary",
      "securityGrade",
      "riskScore",
      "targetProbe"
     ],
     "properties": {
      "ok": {
       "type": "boolean"
      },
      "status": {
       "type": "string"
      },
      "allowed": {
       "type": "boolean"
      },
      "summary": {
       "type": "string"
      },
      "riskScore": {
       "type": "number"
      },
      "targetProbe": {
       "type": "object",
       "required": [
        "status",
        "requiresPayment",
        "priceUsdc"
       ],
       "properties": {
        "status": {
         "type": "number"
        },
        "priceUsdc": {
         "type": "number"
        },
        "requiresPayment": {
         "type": "boolean"
        }
       }
      },
      "securityGrade": {
       "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-proxy-endpoint-55a936e1/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)