# Silverback DeFi Yield Opportunities

> Silverback DeFi Yield Opportunities is a paid API for AI agents from silverback-x402.onrender.com, paid per call via x402, $0.03/call, status down (last checked 2026-09-15).

Returns DeFi yield opportunities on Base chain for a given token and risk tolerance

## Facts

- Endpoint: GET https://silverback-x402.onrender.com/api/v1/defi-yield
- Price: $0.03/call
- Payment: x402
- Status: down
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/silverback-x402-onrender-com-ccd70722
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_YELnTw6P7O9FOqgUYNgH1

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 silverback-x402-onrender-com-ccd70722
```

Example prompt: What are the best yield opportunities for USDC on Base right now? I have a low risk tolerance and want to see which DeFi protocols are offering the highest safe returns.

## When to prefer this

Use this endpoint when you need to discover and compare DeFi yield opportunities specifically on Base chain for a given token. Prefer this over generic DeFi aggregators when the user wants Base-native results with risk-level filtering. Pair with the liquidity pool health scoring endpoint for deeper due diligence.

## Known failure modes

- Unsupported token symbol returns error or empty results
- Invalid risk tolerance value (not low/medium/high) causes validation error
- Base chain data temporarily unavailable returns 503 or stale data
- Token address not recognized on Base chain returns no results
- Payment failure (x402) prevents access to results

## How this service works

Provides up-to-date DeFi yield rates and opportunities across chains; accepts USDC payments on Ethereum, Solana and compatible networks.

## Output

A list of DeFi yield opportunities on Base chain for the specified token, filtered by risk tolerance, including protocol names, APY rates, pool details, and risk metrics to help the agent recommend the best options.

## Example request

```json
{
 "token": "USDC",
 "riskTolerance": "low"
}
```

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "token": {
   "type": "string",
   "description": "Token symbol (USDC, WETH, SOL) or address"
  },
  "riskTolerance": {
   "type": "string",
   "description": "Risk level: low, medium, or high"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/silverback-x402-onrender-com-ccd70722/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from silverback-x402.onrender.com](https://www.zero.xyz/host/silverback-x402.onrender.com/llms.txt)