# DEX Trading Volume Screener

> DEX Trading Volume Screener is a paid API for AI agents from www.x402financialdata.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-15).

Returns top DeFi protocols ranked by DEX trading volume (24h/7d with % change) across ~1,300 DeFiLlama-tracked protocols, with optional chain filter

## Facts

- Endpoint: GET https://www.x402financialdata.com/defi-dex-volume
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/dex-trading-volume-screener-39ccc62d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_WwgMljbXA-E1Ydjra0BIE

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 dex-trading-volume-screener-39ccc62d
```

Example prompt: Show me the top 15 DeFi protocols ranked by DEX trading volume right now, filtered to Ethereum — I want to see the 24h and 7d volume with percent changes.

## When to prefer this

Use this endpoint when you need a cross-protocol DEX volume leaderboard rather than token-specific price or volume data. Ideal for competitive DeFi landscape analysis, identifying trending protocols, or monitoring chain-specific DEX activity. Prefer over token screeners when the unit of analysis is the protocol/platform rather than a specific trading pair or ticker.

## Known failure modes

- Invalid chain name returns empty or error result
- Limit exceeding 25 is clamped or rejected
- DeFiLlama upstream data lag may cause slight staleness
- Payment failure (402) if USDC balance is insufficient

## How this service works

Top DeFi protocols by DEX trading volume, live from DeFiLlama: 24h/7d volume with % change, across ~1,300 tracked protocols. Optionally filter to one chain. Not ticker-specific. Supports optional limit (default 10, max 25). $0.01/call.

## Output

A ranked list of up to 25 DeFi protocols with their DEX trading volume for the past 24 hours and 7 days, along with percentage changes for each period. Data is sourced live from DeFiLlama and covers approximately 1,300 tracked protocols. Results can be optionally filtered to a single blockchain (e.g., Ethereum, Base, Solana, Arbitrum).

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [],
     "properties": {
      "chain": {
       "type": "string",
       "description": "Optional chain filter, e.g. Ethereum, Base, Solana, Arbitrum."
      },
      "limit": {
       "type": "integer",
       "description": "Max protocols to return, default 10, max 25."
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/dex-trading-volume-screener-39ccc62d/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from www.x402financialdata.com](https://www.zero.xyz/host/www.x402financialdata.com/llms.txt)