# BaseBuilder DeFi Stablecoin Yield API

> BaseBuilder DeFi Stablecoin Yield API is a paid API for AI agents from bb-defi.vercel.app, paid per call via x402, $0.110043/call, status unknown (last checked 2026-09-15).

Returns current stablecoin yield opportunities and APY data across DeFi protocols on Base

## Facts

- Endpoint: POST https://bb-defi.vercel.app/api/yield/stablecoin
- Price: $0.110043/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/basebuilder-defi-stablecoin-yield-api-630165f6
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_HMcmlaurqwM97C-Lwqb3p

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 basebuilder-defi-stablecoin-yield-api-630165f6 -d '<json body>'
```

Example prompt: What are the best stablecoin yield opportunities available right now on Base — show me APY rates for USDC pools across DeFi protocols so I can figure out where to park my funds for the highest safe return.

## When to prefer this

Use this endpoint when you need current stablecoin-specific yield data on the Base chain. Prefer this over generic DeFi aggregators when you specifically want Base ecosystem yield opportunities for low-volatility stablecoin assets like USDC, USDT, or DAI.

## Known failure modes

- No yield data available if Base network data sources are down
- Invalid request body returns 400 error
- Payment not processed returns 402 error
- Stale data if underlying protocol APIs are slow or unavailable
- Empty results if no pools meet specified filter criteria

## How this service works

BaseBuilder Defi API hub - 22 paid endpoints

## Output

Returns a list of stablecoin yield opportunities on Base DeFi protocols, including APY rates, protocol names, pool details, and liquidity information to help compare where to earn yield on stablecoins like USDC, USDT, or DAI.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/basebuilder-defi-stablecoin-yield-api-630165f6/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from bb-defi.vercel.app](https://www.zero.xyz/host/bb-defi.vercel.app/llms.txt)