# Saylor Innovations DEX Volume Rankings

> Saylor Innovations DEX Volume Rankings is a paid API for AI agents from saylorinnovations.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-29).

Returns the top decentralized exchanges ranked by 24-hour trading volume for any blockchain, including 7-day and 30-day totals and percentage change metrics

## Facts

- Endpoint: GET https://saylorinnovations.com/api/defi/dex-volume?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-29
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/saylor-innovations-dex-volume-rankings-3f0a531b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_ZSrzRru4k5arhMMSvoRna

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 saylor-innovations-dex-volume-rankings-3f0a531b
```

Example prompt: What are the top 10 decentralized exchanges by 24-hour trading volume on Ethereum right now, including their 7-day and 30-day totals and how volume has changed over the past day?

## When to prefer this

Use this endpoint when you need a ranked leaderboard of decentralized exchanges by trading volume, especially when you want multi-timeframe context (24h, 7d, 30d) and percentage change trends. Prefer this over general crypto market APIs when the focus is specifically on DEX-level volume analytics rather than token prices or individual trade data. Ideal for DeFi dashboards, market research agents, or any workflow that needs to identify which DEXes are dominant on a given chain.

## Known failure modes

- Unsupported or misspelled chain name returns empty or error response
- Limit parameter outside 1-50 range may return default or error
- Data may be slightly delayed or stale if upstream source is unavailable
- Some DEXes may have null values for 7d or 30d totals if insufficient history exists
- Payment failure (402) if x402 payment header is missing or insufficient

## How this service works

DEX volume - top decentralized exchanges by 24h trading volume on any chain with 7d, 30d totals and change percent

## Output

A JSON object containing the queried chain name, the metric being measured, the data source, a timestamp of when the check ran, aggregate 24h/30d totals and change percentages at the chain level, and an array of top DEX entries each with name, slug, supported chains, category, 24h/7d/30d USD volumes, and 1-day/7-day/1-month percentage changes.

## 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"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {
      "chain": {
       "type": "string",
       "description": "optional chain, e.g. ethereum, solana, base, bsc"
      },
      "limit": {
       "type": "string",
       "description": "optional 1-50, default 10"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "json"
    },
    "example": {
     "type": "object",
     "required": [
      "chain",
      "top"
     ],
     "properties": {
      "top": {
       "type": "array",
       "items": {
        "type": "object",
        "properties": {
         "name": {
          "type": "string",
          "description": "Name"
         },
         "slug": {
          "description": "URL-safe identifier"
         },
         "chains": {
          "description": "Chains covered"
         },
         "category": {
          "description": "Category"
         },
         "total_7d_usd": {
          "type": [
           "number",
           "null"
          ],
          "description": "Total 7d usd"
         },
         "change_1d_pct": {
          "type": [
           "number",
           "null"
          ],
          "description": "Change over 1 day, percent"
         },
         "change_1m_pct": {
          "description": "Change over 1 month, percent"
         },
         "change_7d_pct": {
          "description": "Change over 7 days, percent"
         },
         "total_24h_usd": {
          "type": "number",
          "description": "Total 24h usd"
         },
         "total_30d_usd": {
          "description": "Total 30d usd"
         }
        }
       },
       "description": "Top-ranked items"
      },
      "chain": {
       "type": "string",
       "description": "Blockchain the data is for"
      },
      "metric": {
       "type": [
        "string",
        "null"
       ],
       "description": "Metric the figures measure"
      },
      "source": {
       "type": [
        "string",
        "null"
       ],
      
… (truncated)
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/saylor-innovations-dex-volume-rankings-3f0a531b/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from saylorinnovations.com](https://www.zero.xyz/host/saylorinnovations.com/llms.txt)