# BaseBuilder DeFi Best Yield Pools Finder

> BaseBuilder DeFi Best Yield Pools Finder is a paid API for AI agents from bb-defi.vercel.app, paid per call via x402, $0.135008/call, status unknown (last checked 2026-09-13).

Finds and ranks the best-yielding DeFi liquidity pools based on submitted criteria

## Facts

- Endpoint: POST https://bb-defi.vercel.app/api/yield/best-pools
- Price: $0.135008/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/basebuilder-defi-best-yield-pools-finder-8d5518c5
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_kiyPmbNN5_Kzb6Dp3KWl-

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-best-yield-pools-finder-8d5518c5 -d '<json body>'
```

Example prompt: Find me the best DeFi yield pools on Base right now — I want to see the top pools sorted by APY, and ideally with a TVL above $500k so they're not too illiquid.

## When to prefer this

Use this endpoint when an agent needs to discover and rank the best DeFi yield opportunities programmatically, especially on the Base network, without manually querying individual protocols. Prefer this over generic DeFi aggregators when the x402 micropayment model fits your agent's payment stack.

## Known failure modes

- No pools match the specified criteria — returns empty result set
- Invalid token or chain parameter — returns 400 bad request
- Upstream DeFi data source unavailable — returns 503 or stale data
- Payment not included or insufficient — returns 402 Payment Required
- Rate limit exceeded — returns 429

## How this service works

BaseBuilder Defi API hub - 22 paid endpoints

## Output

A ranked list of DeFi liquidity pools with their APY, TVL, protocol name, chain, and pool address, ordered by yield performance based on the submitted criteria.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/basebuilder-defi-best-yield-pools-finder-8d5518c5/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)