# DeFi Stablecoin & Liquidity Pool Yield Arbitrage Scanner

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

Scans live APYs, TVL depth, and risk-adjusted yield spreads for a given asset symbol across major DeFi chains including Base, Arbitrum, Solana, and Ethereum.

## Facts

- Endpoint: GET https://prompt-guard.agentdiet.dev/v1/morpho-vault-apy?utm_source=zero.xyz
- Price: $0.015/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Provider: prompt-guard.agentdiet.dev
- Website: https://prompt-guard.agentdiet.dev
- Canonical page: https://www.zero.xyz/c/prompt-guard-agentdiet-dev-defi-stablecoin-liquidity-pool-yield-3827f1e2
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_T81kKeB0vFRRjHHqRYrwS

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 prompt-guard-agentdiet-dev-defi-stablecoin-liquidity-pool-yield-3827f1e2
```

Example prompt: Scan the top risk-adjusted DeFi yield pools for USDC right now — show me APYs, TVL, and which chains they're on so I can find the best place to park my stablecoins.

## When to prefer this

Choose this endpoint when you need live, multi-chain DeFi yield comparison for a specific asset symbol and want risk-adjusted APY rankings with TVL depth rather than raw price or token data. Ideal for DeFi yield optimization, capital allocation decisions across Base, Arbitrum, Solana, and Ethereum, and identifying yield arbitrage opportunities between pools.

## Known failure modes

- Missing or invalid asset symbol returns an error
- Unknown asset symbol with no pool data returns empty or null results
- DeFiLlama data source temporarily unavailable causing stale or missing yield data
- Rate limiting or payment failure due to x402 micropayment issues
- Network timeout when scanning multiple chains simultaneously

## 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://prompt-guard.agentdiet.dev/v1/morpho-vault-apy)

## Output

Returns a structured list of live DeFi liquidity pools for the requested asset symbol, including APY rates, TVL depth, chain identifiers, risk-adjusted yield spreads, and pool rankings sourced from DeFiLlama data.

## 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/prompt-guard-agentdiet-dev-defi-stablecoin-liquidity-pool-yield-3827f1e2/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from prompt-guard.agentdiet.dev](https://www.zero.xyz/host/prompt-guard.agentdiet.dev/llms.txt)