# SilverbackDeFi Yield Opportunities

> SilverbackDeFi Yield Opportunities is a paid API for AI agents from x402.silverbackdefi.app, paid per call via x402, $0.03/call, status down (last checked 2026-09-16).

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

## Facts

- Endpoint: GET https://x402.silverbackdefi.app/api/v1/defi-yield
- Price: $0.03/call
- Payment: x402
- Status: down
- Last checked: 2026-09-16
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-silverbackdefi-app-ce4f6336
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_7FOdrgMXa4FcNNHVpASHg

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 x402-silverbackdefi-app-ce4f6336
```

Example prompt: What are the best yield opportunities for USDC on Base chain right now? I'm okay with medium risk — show me what protocols are available and their current APYs.

## When to prefer this

Use this endpoint when you need to discover current DeFi yield opportunities specifically on the Base chain, filtered by token and risk appetite. Prefer this over generic DeFi aggregators when you need Base-chain-specific results and are willing to pay per lookup for fresh data.

## Known failure modes

- Unsupported token symbol or address returns empty results or error
- Invalid risk tolerance value (not low/medium/high) may return 400 error
- Base chain data temporarily unavailable returns 503 or empty response
- Payment of $0.03 USDC not received results in 402 Payment Required
- Stale yield data if on-chain protocols haven't been indexed recently

## How this service works

DeFi yield opportunities on Base chain

## Output

A list of DeFi yield opportunities on Base chain matching the requested token and risk tolerance, likely including protocol names, APY rates, risk ratings, and position details for each opportunity.

## 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"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "bestApr": "12.5%",
  "success": true,
  "opportunities": [
   {
    "apr": "12.5%",
    "tvl": "$2.5M",
    "protocol": "Aerodrome"
   }
  ],
  "totalOpportunities": 5
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-silverbackdefi-app-ce4f6336/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402.silverbackdefi.app](https://www.zero.xyz/host/x402.silverbackdefi.app/llms.txt)