# 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 DeFiLlama APYs, TVL depth, and risk-adjusted yield spreads across Base, Arbitrum, Solana, and Ethereum pools for a given asset symbol.

## Facts

- Endpoint: GET https://prompt-guard.agentdiet.dev/v1/pendle-pt-yields?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-6f47f882
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_bqr8fP8-DVLKn4PTIEelC

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-6f47f882
```

Example prompt: Scan the top risk-adjusted DeFi yield pools for USDC across Base, Arbitrum, Solana, and Ethereum and show me the best APY opportunities ranked by TVL depth and spread.

## When to prefer this

Choose this endpoint when you need live, cross-chain DeFi yield comparison for a specific asset symbol (USDC, ETH, SOL, WBTC, etc.) and want risk-adjusted APY and TVL data across Base, Arbitrum, Solana, and Ethereum in a single call. Prefer this over manually querying DeFiLlama or individual protocol APIs when you need a pre-ranked, spread-analyzed view for yield arbitrage decisions.

## Known failure modes

- Missing or empty 'asset' parameter returns validation error
- Unsupported or unrecognized asset symbol may return empty results or error
- DeFiLlama data unavailability may cause stale or missing yield data
- Payment failure (HTTP 402) if x402 micropayment is not completed
- Network timeout if upstream DeFiLlama API is slow or unreachable

## 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/pendle-pt-yields)

## Output

Returns a structured object containing live APY rates, TVL depth metrics, and risk-adjusted yield spreads for pools matching the queried asset across supported chains (Base, Arbitrum, Solana, Ethereum), ranked or organized for yield arbitrage decision-making.

## 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-6f47f882/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)