# Silverback Top Pools

> Silverback Top Pools is a paid API for AI agents from silverback-x402.onrender.com, paid per call via x402, $0.005/call, status down (last checked 2026-09-15).

Retrieves the top-performing liquidity pools on the Base chain with health scoring and ranking metrics

## Facts

- Endpoint: POST https://silverback-x402.onrender.com/api/v1/top-pools
- Price: $0.005/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-eeff7ee7
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_IV1asDwx2sH1LC-AiNOTH

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-eeff7ee7 -d '<json body>'
```

Example prompt: What are the top 10 healthiest liquidity pools on Base chain right now? Show me the ones with the best health scores and TVL.

## When to prefer this

Use this endpoint when you need a ranked, health-scored overview of the best liquidity pools on Base chain for DeFi analysis, yield farming research, or liquidity provision decisions. Prefer this over generic DEX interfaces when you want structured, scored pool data rather than raw on-chain queries.

## Known failure modes

- Invalid filter parameters return 400 error
- Upstream Base chain data unavailable returns 503
- Payment not processed (x402 payment required) returns 402
- Empty result set if no pools match filters

## Output

A ranked list of top liquidity pools on the Base chain, including health scores, TVL, yield data, and pool metadata to help evaluate DeFi opportunities.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/silverback-x402-onrender-com-eeff7ee7/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)