# PalmVox Base DEX Top Losers

> PalmVox Base DEX Top Losers 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 losing tokens on Base DEX pairs in the last 24 hours, including price, percent change, and volume, sourced live from DexScreener.

## Facts

- Endpoint: GET https://alpha.palmvox.com/api/base/losers
- 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-a053fc5e
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_ovjbx4VAmD-HCUSNKdvgL

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-a053fc5e
```

Example prompt: What tokens are down the most on Base DEXs right now? I'm looking for big losers in the last 24 hours — show me the prices, how much they've dropped, and trading volume so I can spot potential bounce plays.

## When to prefer this

Use this endpoint when you need real-time data on the worst-performing tokens on the Base blockchain's decentralized exchanges, specifically for identifying dumps, oversold conditions, or potential bounce trade setups. Prefer over generic market data APIs when Base-specific DEX pair granularity and live DexScreener sourcing are required.

## Known failure modes

- DexScreener API unavailable — may return empty losers array or upstream error
- No losers found if market is broadly positive — count may be 0
- Stale data if DexScreener feed is delayed
- Payment failure (402) if x402 micropayment not included or insufficient

## How this service works

Top losers on Base DEXs in the last 24h — live from DexScreener. Token, price, change%, volume. Identify dumps and potential bounce plays.

## Output

Returns a JSON object with the chain identifier ('base'), a count of losing tokens, and an array of loser entries each containing the pair address, token symbol, current price, 24h volume, and 24h percent change (negative values). Data is sourced live from DexScreener.

## Example request

```json
{
 "query": "{\\\"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"
      },
      "losers": {
       "type": "array"
      }
     }
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "chain",
  "count",
  "losers",
  "source",
  "trackRecord",
  "alsoAvailable"
 ],
 "properties": {
  "chain": {
   "type": "string"
  },
  "count": {
   "type": "number"
  },
  "losers": {
   "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"
     }
    }
   }
  },
  "source": {
   "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-a053fc5e/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)