# Base DEX Top Gainers Feed

> Base DEX Top Gainers Feed is a paid API for AI agents from alpha.palmvox.com, paid per call via x402, $0.003/call, status down (last checked 2026-09-15).

Returns the top gaining tokens on Base DEXs in the last 24 hours, including token name, price, percent change, and volume, sourced live from DexScreener.

## Facts

- Endpoint: GET https://alpha.palmvox.com/api/base/gainers
- Price: $0.003/call
- Payment: x402
- Status: down
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/alpha-palmvox-com-21362040
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_BN6V0EyMVHnWNkmgg9fGR

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 alpha-palmvox-com-21362040
```

Example prompt: What tokens are gaining the most on Base DEXs right now — show me the top gainers with their price, 24h change, and volume from DexScreener.

## When to prefer this

Use this endpoint when you need real-time top gainer data specifically on the Base blockchain from DEX markets. Prefer this over generic price feeds when you want ranked momentum data (percent gainers) rather than absolute prices, and when Base ecosystem focus is required. At $0.003/call it is cost-effective for frequent polling.

## Known failure modes

- DexScreener data unavailable — upstream API outage may return empty gainers array
- Stale data if DexScreener feed is delayed
- Payment not processed (x402) — request rejected before data is returned
- Empty gainers list during low-activity market periods

## How this service works

Top gainers on Base DEXs in the last 24h — live from DexScreener. Token, price, change%, volume. Zero cost to us, pure value for you.

## Output

Returns a JSON object with the chain name ('base'), a count of results, the data source ('DexScreener'), and an array of top gainer tokens. Each token entry includes the pair address, current price, token symbol, 24h trading volume, and percent change over 24 hours.

## Example request

```json
{
 "input": {
  "type": "http",
  "method": "GET",
  "queryParams": {}
 }
}
```

## 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": {}
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "properties": {
      "chain": {
       "type": "string"
      },
      "count": {
       "type": "number"
      },
      "gainers": {
       "type": "array"
      }
     }
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "chain",
  "count",
  "source",
  "gainers",
  "trackRecord",
  "alsoAvailable"
 ],
 "properties": {
  "chain": {
   "type": "string"
  },
  "count": {
   "type": "number"
  },
  "source": {
   "type": "string"
  },
  "gainers": {
   "type": "array",
   "items": {
    "type": "object",
    "required": [
     "pair",
     "price",
     "token",
     "volume",
     "change24h"
    ],
    "properties": {
     "pair": {
      "type": "string"
     },
     "price": {
      "type": "string"
     },
     "token": {
      "type": "string"
     },
     "volume": {
      "type": "string"
     },
     "change24h": {
      "type": "string"
     }
    }
   }
  },
  "trackRecord": {
   "type": "string"
  },
  "alsoAvailable": {
   "type": "array",
   "items": {
    "type": "object",
    "required": [
     "url",
     "price"
    ],
    "properties": {
     "url": {
      "type": "string"
     },
     "price": {
      "type": "string"
     }
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/alpha-palmvox-com-21362040/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from alpha.palmvox.com](https://www.zero.xyz/host/alpha.palmvox.com/llms.txt)