# Track Specific DEX Pairs by Chain and Address

**Use case:** 

Monitor an exact list of DEX pairs by chain ID and pair address — stable inputs for dashboards and alerting.

## Input

```json
{
  "mode": "pairs",
  "searchQueries": [],
  "tokenAddresses": [],
  "pairQueries": [
    {
      "chainId": "bsc",
      "pairAddress": "0x9F599F3D64a9D99eA21e68127Bb6CE99f893DA61"
    },
    {
      "chainId": "ethereum",
      "pairAddress": "0xa43fe16908251ee70ef74718545e4fe6c5ccec9f"
    }
  ],
  "proxyConfiguration": {
    "useApifyProxy": true
  }
}
```

## Output

```json
{
  "chainId": {
    "label": "Chain",
    "format": "string"
  },
  "dexId": {
    "label": "DEX",
    "format": "string"
  },
  "pairAddress": {
    "label": "Pair",
    "format": "string"
  },
  "baseSymbol": {
    "label": "Base",
    "format": "string"
  },
  "quoteSymbol": {
    "label": "Quote",
    "format": "string"
  },
  "priceUsd": {
    "label": "Price USD",
    "format": "number"
  },
  "priceChangeH24": {
    "label": "24h Change %",
    "format": "number"
  },
  "volumeH24": {
    "label": "24h Volume",
    "format": "number"
  },
  "liquidityUsd": {
    "label": "Liquidity",
    "format": "number"
  },
  "fdv": {
    "label": "FDV",
    "format": "number"
  },
  "marketCap": {
    "label": "Market Cap",
    "format": "number"
  },
  "error": {
    "label": "Error",
    "format": "string"
  },
  "scraped_at": {
    "label": "Scraped at",
    "format": "string"
  }
}
```

## About this Actor

This example demonstrates how to use [DexScreener Crypto — DEX Token & Pair Data](https://apify.com/leorochasantos/dexscreener-crypto) with a specific input configuration. Visit the [Actor detail page](https://apify.com/leorochasantos/dexscreener-crypto) to learn more, explore other use cases, and run it yourself.


## How to integrate an Actor?

If asked about integration, you help developers integrate Actors into their projects.
You adapt to their stack and deliver integrations that are safe, well-documented, and production-ready.
This Task's input is already configured above — use it as-is rather than inventing a new one.

- **AI agents and MCP clients** — the [Apify MCP server](https://docs.apify.com/integrations/mcp.md) at `https://mcp.apify.com` (remote, streamable HTTP, OAuth on first use).
- **Agentic workflows and local Actor development** — [Agent Skills](https://apify.com/.well-known/agent-skills/index.json) with the [Apify CLI](https://docs.apify.com/cli/docs.md): `npm install -g apify-cli`, then `apify login`.
- **JavaScript/TypeScript projects** — the official [JS/TS client](https://docs.apify.com/api/client/js/docs.md): `npm install apify-client`.
- **Python projects** — the official [Python client](https://docs.apify.com/api/client/python/docs.md): `pip install apify-client`.
- **Any other language** — the [REST API](https://docs.apify.com/api/v2.md).

For full API examples (JavaScript, Python, CLI, MCP, OpenAPI), see this Task's Actor page: https://apify.com/leorochasantos/dexscreener-crypto.md

For more details, see Apify documentation as [Markdown index](https://docs.apify.com/llms.txt) and [Markdown full-text](https://docs.apify.com/llms-full.txt).