diff --git a/tradingagents/dataflows/dex/coingecko_provider.py b/tradingagents/dataflows/dex/coingecko_provider.py
new file mode 100644
index 00000000..b3e8ff18
--- /dev/null
+++ b/tradingagents/dataflows/dex/coingecko_provider.py
@@ -0,0 +1,220 @@
+"""CoinGecko data provider for DEX data.
+
+This module provides access to CoinGecko's free API for OHLCV data and token metadata.
+The output is formatted as readable text for LLM consumption.
+"""
+
+import aiohttp
+from datetime import datetime
+from typing import Optional
+
+COINGECKO_BASE_URL = "https://api.coingecko.com/api/v3"
+
+
+class CoinGeckoProvider:
+    """Async provider for CoinGecko API."""
+
+    def __init__(self):
+        self.base_url = COINGECKO_BASE_URL
+        self._session: Optional[aiohttp.ClientSession] = None
+
+    async def _get_session(self) -> aiohttp.ClientSession:
+        """Get or create an aiohttp session."""
+        if self._session is None or self._session.closed:
+            self._session = aiohttp.ClientSession()
+        return self._session
+
+    async def close(self):
+        """Close the HTTP session."""
+        if self._session and not self._session.closed:
+            await self._session.close()
+
+    async def get_ohlc(
+        self, coin_id: str, vs_currency: str = "usd", days: int = 7
+    ) -> list:
+        """
+        Get OHLC data for a coin.
+
+        Args:
+            coin_id: CoinGecko coin ID (e.g., 'solana', 'bitcoin')
+            vs_currency: Currency to compare against (e.g., 'usd', 'eur')
+            days: Number of days of data (1, 7, 14, 30, 90, 365, max)
+
+        Returns:
+            List of OHLC data points: [timestamp, open, high, low, close]
+        """
+        url = f"{self.base_url}/coins/{coin_id}/ohlc"
+        params = {"vs_currency": vs_currency, "days": days}
+
+        session = await self._get_session()
+        async with session.get(url, params=params) as response:
+            response.raise_for_status()
+            return await response.json()
+
+    async def get_coin_data(self, coin_id: str) -> dict:
+        """
+        Get detailed metadata for a coin.
+
+        Args:
+            coin_id: CoinGecko coin ID (e.g., 'solana', 'bitcoin')
+
+        Returns:
+            Dictionary containing coin metadata
+        """
+        url = f"{self.base_url}/coins/{coin_id}"
+        params = {
+            "localization": "false",
+            "tickers": "false",
+            "market_data": "true",
+            "community_data": "false",
+            "developer_data": "false",
+            "sparkline": "false",
+        }
+
+        session = await self._get_session()
+        async with session.get(url, params=params) as response:
+            response.raise_for_status()
+            return await response.json()
+
+    async def __aenter__(self):
+        """Async context manager entry."""
+        return self
+
+    async def __aexit__(self, exc_type, exc_val, exc_tb):
+        """Async context manager exit."""
+        await self.close()
+
+
+def _format_ohlc_data(ohlc_data: list) -> str:
+    """Format OHLC data as readable text for LLM consumption."""
+    if not ohlc_data:
+        return "No OHLC data available."
+
+    lines = ["OHLC Data (Open, High, Low, Close):"]
+    lines.append("-" * 60)
+
+    for point in ohlc_data:
+        timestamp, open_price, high, low, close = point
+        date = datetime.fromtimestamp(timestamp / 1000).strftime("%Y-%m-%d %H:%M")
+        lines.append(
+            f"Timestamp: {date} | Open: ${open_price:,.2f} | High: ${high:,.2f} | "
+            f"Low: ${low:,.2f} | Close: ${close:,.2f}"
+        )
+
+    return "\n".join(lines)
+
+
+def _format_coin_info(coin_data: dict) -> str:
+    """Format coin metadata as readable text for LLM consumption."""
+    if not coin_data or "market_data" not in coin_data:
+        return "No coin data available."
+
+    md = coin_data.get("market_data", {})
+    info = coin_data.get("info", {})
+
+    name = coin_data.get("name", "Unknown")
+    symbol = coin_data.get("symbol", "").upper()
+
+    lines = [f"Token Information: {name} ({symbol})"]
+    lines.append("=" * 60)
+
+    # Market data
+    lines.append("\n--- Market Data ---")
+    current_price = md.get("current_price", {}).get("usd", 0)
+    lines.append(f"Current Price (USD): ${current_price:,.2f}")
+
+    market_cap = md.get("market_cap", {}).get("usd", 0)
+    lines.append(f"Market Cap (USD): ${market_cap:,.0f}")
+
+    total_volume = md.get("total_volume", {}).get("usd", 0)
+    lines.append(f"24h Trading Volume (USD): ${total_volume:,.0f}")
+
+    # Price changes
+    lines.append("\n--- Price Changes ---")
+    for period in ["1h", "24h", "7d", "30d"]:
+        change = md.get(f"price_change_percentage_{period}s")
+        if change is not None:
+            sign = "+" if change >= 0 else ""
+            lines.append(f"{period} Change: {sign}{change:.2f}%")
+
+    # Supply data
+    lines.append("\n--- Supply Data ---")
+    circulating = md.get("circulating_supply", 0)
+    if circulating:
+        lines.append(f"Circulating Supply: {circulating:,.0f} {symbol}")
+
+    total_supply = md.get("total_supply")
+    if total_supply:
+        lines.append(f"Total Supply: {total_supply:,.0f} {symbol}")
+
+    max_supply = md.get("max_supply")
+    if max_supply:
+        lines.append(f"Max Supply: {max_supply:,.0f} {symbol}")
+
+    # ATH/ATL
+    lines.append("\n--- All-Time High/Low ---")
+    ath = md.get("ath", {}).get("usd", 0)
+    ath_date = md.get("ath_date", {}).get("usd", "")
+    if ath:
+        lines.append(f"All-Time High: ${ath:,.2f} ({ath_date[:10] if ath_date else 'N/A'})")
+
+    atl = md.get("atl", {}).get("usd", 0)
+    atl_date = md.get("atl_date", {}).get("usd", "")
+    if atl:
+        lines.append(f"All-Time Low: ${atl:,.2f} ({atl_date[:10] if atl_date else 'N/A'})")
+
+    return "\n".join(lines)
+
+
+async def get_coin_ohlcv(coin_id: str, vs_currency: str = "usd", days: int = 7) -> str:
+    """
+    Get OHLCV data for a cryptocurrency.
+
+    Args:
+        coin_id: CoinGecko coin ID (e.g., 'solana', 'bitcoin', 'ethereum')
+        vs_currency: Currency to compare against (default: 'usd')
+        days: Number of days of data (default: 7, max: 365)
+
+    Returns:
+        Formatted string containing OHLC data for LLM consumption
+    """
+    async with CoinGeckoProvider() as provider:
+        try:
+            ohlc_data = await provider.get_ohlc(coin_id, vs_currency, days)
+            return _format_ohlc_data(ohlc_data)
+        except aiohttp.ClientError as e:
+            return f"Error fetching OHLC data: {str(e)}"
+        except Exception as e:
+            return f"Unexpected error: {str(e)}"
+
+
+async def get_coin_info(coin_id: str) -> str:
+    """
+    Get detailed token metadata from CoinGecko.
+
+    Args:
+        coin_id: CoinGecko coin ID (e.g., 'solana', 'bitcoin', 'ethereum')
+
+    Returns:
+        Formatted string containing token metadata for LLM consumption
+    """
+    async with CoinGeckoProvider() as provider:
+        try:
+            coin_data = await provider.get_coin_data(coin_id)
+            return _format_coin_info(coin_data)
+        except aiohttp.ClientError as e:
+            return f"Error fetching coin info: {str(e)}"
+        except Exception as e:
+            return f"Unexpected error: {str(e)}"
+
+
+# Module-level provider instance for reuse
+_provider: Optional[CoinGeckoProvider] = None
+
+
+async def _get_provider() -> CoinGeckoProvider:
+    """Get or create a module-level provider instance."""
+    global _provider
+    if _provider is None:
+        _provider = CoinGeckoProvider()
+    return _provider
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diff --git a/tradingagents/dataflows/dex/test_coingecko.py b/tradingagents/dataflows/dex/test_coingecko.py
new file mode 100644
index 00000000..e26cd535
--- /dev/null
+++ b/tradingagents/dataflows/dex/test_coingecko.py
@@ -0,0 +1,18 @@
+import pytest
+from tradingagents.dataflows.dex.coingecko_provider import get_coin_ohlcv, get_coin_info
+
+
+@pytest.mark.asyncio
+async def test_get_coin_ohlcv_returns_data():
+    """Test that get_coin_ohlcv returns OHLCV data for SOL."""
+    result = await get_coin_ohlcv("solana", "usd", 7)
+    assert " timestamp " in result.lower() or "open" in result.lower()
+    assert len(result) > 100
+
+
+@pytest.mark.asyncio
+async def test_get_coin_info_returns_metadata():
+    """Test that get_coin_info returns token metadata."""
+    result = await get_coin_info("solana")
+    assert "solana" in result.lower()
+    assert "market_cap" in result.lower() or "$" in result
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