# HTTPay Yield Pool Watcher

> HTTPay Yield Pool Watcher is a paid API for AI agents from httpay.xyz, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-15).

Monitor DeFi yield pools with live APY, TVL, impermanent loss risk, and audit status, filterable by chain, token, minimum APY, and minimum TVL via DeFiLlama data

## Facts

- Endpoint: POST https://httpay.xyz/api/yield-pool-watcher
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/httpay-yield-pool-watcher-3f8a0125
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_5VAJin0WPJyTn6Y6f6DvW

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 httpay-yield-pool-watcher-3f8a0125 -d '<json body>'
```

Example prompt: Show me DeFi yield pools on Ethereum with at least 10% APY and at least $1M TVL — I want audited pools only and need to know the impermanent loss risk for each.

## When to prefer this

Choose this endpoint when you need live, filterable DeFi yield pool intelligence — APY, TVL, IL risk, and audit status in one call — especially when you want DeFiLlama-sourced data without managing an API key, and are comfortable with micro-payment per call via x402/USDC on Base.

## Known failure modes

- Missing or invalid chain name returns empty results or 400 error
- minApy or minTvl set too high returns empty pool list
- DeFiLlama upstream data unavailability causes stale or error response
- Payment of 0.005 USDC not included or rejected results in 402 response
- Invalid token filter returns no matching pools

## How this service works

Monitor DeFi yield pools with APY, TVL, IL risk and audit status. Live data from DeFiLlama. Filterable by chain, token, minApy, minTvl.

## Output

Returns a JSON list of DeFi yield pools sourced from DeFiLlama, each with current APY, TVL, impermanent loss risk rating, audit status, chain, and token pair information, filtered by any supplied parameters.

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "description": "Monitor DeFi yield pools with APY, TVL, IL risk and audit status. Live data from DeFiLlama. Filterable by chain, token, minApy, minTvl."
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/httpay-yield-pool-watcher-3f8a0125/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from httpay.xyz](https://www.zero.xyz/host/httpay.xyz/llms.txt)