---
name: longbridge-defi-yield
description: |
  DeFi yield analysis framework — lending rates (AAVE / Compound), liquidity provision (LP) returns, staking yields, yield farming strategies, and risk-adjusted return comparison. Longbridge provides spot crypto prices (`.HAS` suffix) only; DeFi protocol data (APY/TVL) requires DefiLlama/CoinGecko via WebSearch. Triggers: "DeFi收益", "流动性挖矿", "质押收益", "借贷利率", "收益农耕", "LP收益", "AAVE", "Compound", "DeFi协议", "DeFi收益率", "流動性挖礦", "質押收益", "借貸利率", "收益農耕", "DeFi yield", "liquidity mining", "staking yield", "lending rate", "yield farming", "LP returns", "DeFi APY", "TVL", "DeFi protocol", "on-chain yield", "DeFi strategy".
license: MIT
metadata:
  author: longbridge
  version: "1.0.0"
  risk_level: read_only
  requires_login: false
  default_install: true
  requires_mcp: false
  tier: read
---

# longbridge-defi-yield

DeFi yield analysis framework — covers lending rates (AAVE / Compound), liquidity provision (LP) returns, staking yields, yield farming strategies, and risk-adjusted return comparison across DeFi protocols.

> **Response language**: match the user's input language — Simplified Chinese / Traditional Chinese / English.

> **Data scope notice**: Longbridge provides real-time spot prices for major cryptocurrencies (`.HAS` suffix, e.g. `BTCUSD.HAS`, `ETHUSD.HAS`). DeFi protocol metrics (APY, TVL, utilisation rates) are **not available** via the Longbridge CLI — they must be sourced via WebSearch (DefiLlama, CoinGecko, protocol dashboards).

## When to use

Trigger when the user asks about:

- DeFi lending / borrowing rates — *"AAVE 上 ETH 借贷利率"*, *"Compound USDC supply APY"*
- Liquidity mining / LP returns — *"Uniswap LP 收益"*, *"流动性挖矿策略"*
- Staking yields — *"ETH 质押收益率"*, *"SOL staking APY"*
- Yield farming strategies — *"如何优化 DeFi 收益"*, *"yield farming best strategy"*
- Risk-adjusted DeFi comparison — *"哪个协议收益最高且风险最低"*

For crypto spot price only, prefer `longbridge-quote`. For general crypto market data, prefer `longbridge-core`.

## Workflow

1. **Identify asset and protocol** from the prompt (e.g. ETH + AAVE, USDC + Compound).
2. **Fetch spot price** from Longbridge for the underlying crypto asset (as price reference):
   ```bash
   longbridge quote ETHUSD.HAS --format json
   ```
3. **Fetch DeFi protocol data** via WebSearch from canonical sources:
   - DefiLlama (`defillama.com`) for TVL, protocol APY, pool yields.
   - CoinGecko (`coingecko.com`) for staking yields and token data.
   - Protocol-native dashboards (app.aave.com, app.compound.finance) for live rates.
4. **Compute risk-adjusted yield**:
   - Nominal APY vs. inflation-adjusted real yield.
   - IL (impermanent loss) risk for LP positions.
   - Smart contract risk / audit status (note qualitatively).
5. **Present comparison table** across protocols/strategies, ranked by risk-adjusted return.

## CLI

```bash
# Spot price for underlying crypto (price reference only)
longbridge quote BTCUSD.HAS --format json
longbridge quote ETHUSD.HAS --format json
longbridge quote SOLUSD.HAS --format json
```

> Run `longbridge quote --help` to see supported `.HAS` crypto symbols.

DeFi protocol data is **not available** via the Longbridge CLI. Use WebSearch to retrieve live APY/TVL from DefiLlama, CoinGecko, or protocol dashboards.

## Output

Present a DeFi yield comparison table:

| Field | 简体 | 繁體 | English |
|---|---|---|---|
| Protocol | 协议 | 協議 | Protocol |
| Asset | 资产 | 資產 | Asset |
| Strategy type | 策略类型 | 策略類型 | Strategy type |
| Nominal APY | 名义年化收益 | 名義年化收益 | Nominal APY |
| Estimated risk | 风险等级 | 風險等級 | Risk level |
| TVL | 总锁仓量 | 總鎖倉量 | TVL |
| Notes | 备注 | 備註 | Notes |

Always include a risk disclaimer: *"DeFi 投资存在智能合约风险、无常损失和流动性风险，不构成投资建议。"* / *"DeFi investing carries smart contract, impermanent loss, and liquidity risks. This is not investment advice."*

## Error handling

| Situation | 简体回复 | 繁體回覆 | English reply |
|---|---|---|---|
| `command not found: longbridge` | 请先安装 longbridge-terminal（仅用于现货价格） | 請先安裝 longbridge-terminal（僅用於現貨價格） | Install longbridge-terminal (for spot prices only) |
| `.HAS` symbol not found | 提示该加密货币暂不支持，尝试标准格式 | 提示該加密貨幣暫不支援 | Crypto symbol not supported; check `.HAS` format |
| DeFi APY data unavailable | 提示需通过 WebSearch 获取协议数据 | 提示需透過 WebSearch 取得協議數據 | DeFi APY requires WebSearch (DefiLlama/CoinGecko) |
| Other stderr | 原样展示，不重试 | 原樣展示，不重試 | Surface verbatim, do not retry |

## MCP fallback

For spot crypto prices: the equivalent MCP tool with `.HAS` symbols. DeFi protocol data has no Longbridge MCP equivalent — WebSearch is required.

## Related skills

| User asks | Route to |
|---|---|
| Crypto spot price only | `longbridge-quote` |
| Crypto market overview / news | `longbridge-core` |
| Options on crypto | `longbridge-derivatives` |
| General market calendar | `longbridge-calendar` |

## File layout

```
longbridge-defi-yield/
└── SKILL.md
```

Prompt-only — no `scripts/`. DeFi protocol data sourced via WebSearch. Spot crypto prices via `longbridge quote <SYMBOL>.HAS --format json`.