# DeFi Stablecoin & Liquidity Pool Yield Arbitrage Scanner

> DeFi Stablecoin & Liquidity Pool Yield Arbitrage Scanner is a paid API for AI agents from preflight.agentdiet.dev, paid per call via MPP, $0.015/call, status unknown (last checked 2026-10-21).

Scans live DeFiLlama APYs, TVL depth, and risk-adjusted yield spreads for a given asset across Base, Arbitrum, Solana, and Ethereum DeFi pools

## Facts

- Endpoint: GET https://preflight.agentdiet.dev/v1/defi-apy?utm_source=zero.xyz
- Price: $0.015/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Provider: preflight.agentdiet.dev
- Website: https://preflight.agentdiet.dev
- Canonical page: https://www.zero.xyz/c/preflight-agentdiet-dev-defi-stablecoin-liquidity-pool-yield-8107d438
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_UCd4ncGfMhQWCTHGPYgWv

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 preflight-agentdiet-dev-defi-stablecoin-liquidity-pool-yield-8107d438
```

Example prompt: What are the best risk-adjusted DeFi yield pools for USDC right now — scan across Base, Arbitrum, Solana, and Ethereum and show me the top APYs with TVL depth.

## When to prefer this

Choose this endpoint when you need live, cross-chain DeFi yield comparison for a specific asset — especially when TVL depth and risk-adjusted spreads matter alongside raw APY. Prefer this over manual DeFiLlama browsing or single-chain yield queries when an agent needs structured, machine-readable yield data across Base, Arbitrum, Solana, and Ethereum in a single call.

## Known failure modes

- Missing or empty asset symbol returns a validation error
- Unsupported or unrecognized asset ticker may return empty results or an error
- DeFiLlama API outage may cause stale or unavailable data
- Rate limiting or payment failure (HTTP 402) if USDC micropayment not processed
- Network-specific pools may be unavailable if a chain's data feed is down

## How this service works

Scans live DeFiLlama APYs, TVL depth, and risk-adjusted yield spreads across Base, Arbitrum, Solana, and Ethereum pools. (Live x402 v2, IETF MPP & MCP endpoint at https://preflight.agentdiet.dev/v1/defi-apy)

## Output

Returns a structured object containing ranked DeFi pool yield data for the requested asset, including live APY rates sourced from DeFiLlama, TVL depth per pool, risk-adjusted yield spreads, and pool metadata across Base, Arbitrum, Solana, and Ethereum networks.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "asset"
 ],
 "properties": {
  "asset": {
   "type": "string",
   "minLength": 1,
   "description": "Target asset symbol (e.g. USDC, ETH, SOL, WBTC) to scan for top risk-adjusted DeFi yield pools"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object"
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/preflight-agentdiet-dev-defi-stablecoin-liquidity-pool-yield-8107d438/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from preflight.agentdiet.dev](https://www.zero.xyz/host/preflight.agentdiet.dev/llms.txt)