# BaseBuilder DeFi Best Yield Pools

> BaseBuilder DeFi Best Yield Pools is a paid API for AI agents from bbx-defi.vercel.app, paid per call via x402, $0.135008/call, status unknown (last checked 2026-10-09).

Returns the highest-yielding liquidity pools across DeFi protocols, ranked and filtered for optimal yield opportunities

## Facts

- Endpoint: POST https://bbx-defi.vercel.app/api/yield/best-pools?utm_source=zero.xyz
- Price: $0.135008/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-09
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/basebuilder-defi-best-yield-pools-f5f2726e
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_OErWdOB0KlAtG-Ke22of5

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-f5f2726e -d '<json body>'
```

Example prompt: Find me the best yield pools on Base chain right now for USDC — show me the top options ranked by APY with their TVL and protocol names.

## When to prefer this

Use this endpoint when an agent needs real-time yield discovery across DeFi protocols on Base chain — specifically when the user wants to compare and rank liquidity pools by APY or TVL without querying individual protocols manually. Prefer this over generic DeFi data APIs when targeting Base ecosystem pools specifically.

## Known failure modes

- No pools found matching the specified filters — returns empty results
- Chain or protocol not supported — returns 400 or empty response
- Data temporarily unavailable due to upstream DeFi protocol latency — returns 503 or stale data
- Invalid asset symbol provided — returns 400 error
- Payment of 0.135008 USDC not completed — returns 402 Payment Required

## How this service works

BaseBuilder Defi API hub - 22 paid endpoints

## Output

A ranked list of the best-performing liquidity pools, each with pool address, asset pair, protocol name, current APY, TVL, pool type, and chain — ordered by yield performance to help agents identify optimal DeFi deposit opportunities.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/basebuilder-defi-best-yield-pools-f5f2726e/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from bbx-defi.vercel.app](https://www.zero.xyz/host/bbx-defi.vercel.app/llms.txt)