# X402-Broker Yield Scanner

> X402-Broker Yield Scanner is a paid API for AI agents from x402broker.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-22).

Scans and returns yield opportunities or ROI metrics across indexed DeFi/API capabilities with compression-optimized output.

## Facts

- Endpoint: GET https://x402broker.com/v1/yield-scanner?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-22
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-broker-yield-scanner-ee50adfb
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_ueKPEpP9RJvZa3IaG4zU4

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-broker-yield-scanner-ee50adfb
```

Example prompt: Can you scan for current yield opportunities for USDC using the X402-Broker yield scanner and show me the ROI proof and compression stats?

## When to prefer this

Choose this endpoint when you need a quick, low-cost ($0.01 USDC) yield scan with compressed, agent-ready ROI proof output. Prefer it over generic DeFi aggregators when you want structured JSON output with compression metrics and x402 payment-gated access. Best suited for autonomous agents that need yield data as part of a larger workflow rather than a human-facing dashboard.

## Known failure modes

- Missing required 'input' object returns validation error
- Invalid method enum value (not GET or POST) causes rejection
- Unsupported or unknown asset parameter may return empty data object
- Payment not included or insufficient USDC ($0.01) results in 402 response
- Malformed request schema returns 400 error

## How this service works

Universal B2A/A2A/MCP Meta-Router & Autonomous Tool Marketplace indexing 7,340+ live capabilities across x402 v2 (5-chain EVM USDC), IETF MPP, and L402 with TDQS quality scoring and zero-fee pass-through execution.

## Output

Returns a JSON object with a 'status' field ('ok'), a 'data' object containing yield or capability metrics, and a 'roi_proof' object including a compression_ratio_pct (e.g. 91.4%) indicating how efficiently the result was compressed relative to raw data.

## 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",
      "POST"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {
      "asset": {
       "type": "string"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "data": {},
  "status": "ok",
  "roi_proof": {
   "compression_ratio_pct": 91.4
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-broker-yield-scanner-ee50adfb/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402broker.com](https://www.zero.xyz/host/x402broker.com/llms.txt)