# Vextorium Pool Fee APR

> Vextorium Pool Fee APR is a paid API for AI agents from api.vextorium.com, paid per call via x402, $0.004/call, status unknown (last checked 2026-10-19).

Returns estimated annual percentage rate (APR) for liquidity pool(s) based on 24h fee and volume data from DEX Screener

## Facts

- Endpoint: POST https://api.vextorium.com/v1/pool-fee-apr?utm_source=zero.xyz
- Price: $0.004/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-19
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/vextorium-pool-fee-apr-322cc9b0
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_siwhwMYNdfA4NdFqYqHl6

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 vextorium-pool-fee-apr-322cc9b0 -d '<json body>'
```

Example prompt: What's the estimated fee APR for the BRETT/WETH pool at 0x4e829F8A5213c42535AB84AA40BD4aDCCE9cBa02 on the Base network?

## When to prefer this

Use this endpoint when you need a quick, on-demand fee APR estimate for one or more DeFi liquidity pools on EVM networks (especially Base), sourced from live DEX Screener data. Prefer it over on-chain contract calls when you want a pre-computed, human-readable yield metric without building your own volume/fee/liquidity pipeline. Best suited for agent workflows that need to compare pool yields, screen LP opportunities, or surface APR data as part of a DeFi research or portfolio workflow.

## Known failure modes

- Pool address not found on the specified network — returns empty pools array
- Invalid or unsupported network name — may return null or empty result
- APR estimate unreliable for very new pools with insufficient volume history
- Concentrated liquidity pools (v3/CL) yield estimates may be inaccurate due to range dependency
- DEX Screener data latency may cause stale liquidity or volume figures

## How this service works

558 pay-per-call data APIs for AI agents: Solana and EVM on-chain data, tokenized stocks, DeFi, Hyperliquid, economy and official statistics, FX, validation, web and developer tools. Pay in USDC via x402.

## Output

A JSON object containing an array of matching pools, each with DEX name, token pair, pool address, pool fee percentage, 24h volume in USD, liquidity in USD, daily turnover ratio, 24h fees in USD, and estimated APR percentage, along with the data source attribution and a note about the estimation methodology (APR = 24h volume × fee / liquidity × 365).

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "pool": {
   "type": "string"
  },
  "limit": {
   "type": "integer"
  },
  "token": {
   "type": "string"
  },
  "network": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "note": "Estimate based on one day of volume; in concentrated pools (v3/CL) the real yield depends on the range and excludes impermanent loss and incentives.",
  "pools": [
   {
    "dex": "aerodrome",
    "link": "https://dexscreener.com/base/0x4e829f8a5213c42535ab84aa40bd4adcce9cba02",
    "pair": "BRETT/WETH",
    "pool": "0x4e829F8A5213c42535AB84AA40BD4aDCCE9cBa02",
    "labels": null,
    "age_days": null,
    "fees_24h_usd": 891,
    "pool_fee_pct": 0.21,
    "liquidity_usd": 869778,
    "daily_turnover": 0.487,
    "volume_24h_usd": 423951,
    "estimated_apr_pct": 37.4
   }
  ],
  "source": "DEX Screener (liquidity and volume); APR = 24h volume × fee / liquidity × 365",
  "network": "base"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/vextorium-pool-fee-apr-322cc9b0/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.vextorium.com](https://www.zero.xyz/host/api.vextorium.com/llms.txt)