Crypto Fear & Greed Index MCP Server

A mcp server that provides real-time and historical Crypto Fear & Greed Index data, powered by the Alternative.me.

This server exposes resources and tools for fetching and analyzing the Fear & Greed Index, making it easy to integrate into MCP-compatible clients, including Claude Desktop.

Features

Current Index: Retrieve the latest Fear & Greed Index value and classification.
Historical Data: Fetch historical index values for a specified number of days.
Trend Analysis: Analyze trends over time with statistics like average value and trend direction.
Tool-Only Support: Includes tool versions of all resources for compatibility with tool-only MCP clients.
Prompt Generation: Provides a prompt template for interpreting index values.

Resources

fng://current. Current crypto Fear & Greed Index. Output:

Crypto Fear & Greed Index (as of 2025-03-15 00:00:00 UTC):
Value: 45
Classification: Fear

fng://history/{days}. Historical Data of Crypto Fear & Greed Index.Output:

Historical Crypto Fear & Greed Index:
2025-03-15 00:00:00 UTC: 45 (Fear)
2025-03-14 00:00:00 UTC: 48 (Fear)
...

Tools

get_current_fng_tool() -> str.

Current Index. Same as fng://current

get_historical_fng_tool(days: int) -> str.

Historical Index Data. Same as fng://history/{days}

analyze_fng_trend(days: int) -> str.

Index trend Analysis. Output:

Fear & Greed Index Analysis (30 days):
Latest Value: 45 (Fear) at 2025-03-15 00:00:00 UTC
Average Value: 47.3
Trend: falling
Data points analyzed: 30

Prompts

interpret_fng

Index Data Interpretation.

Output:

Please interpret this Crypto Fear & Greed Index value and explain what it means for cryptocurrency markets (specifically Bitcoin): 45

Installation

Installing via Smithery

To install Crypto Fear & Greed Index for Claude Desktop automatically via Smithery:

npx -y @smithery/cli install @kukapay/crypto-feargreed-mcp --client claude

Clone the repository:

git clone https://github.com/kukapay/crypto-feargreed-mcp.git
cd crypto-feargreed-mcp

Install for Claude Desktop

mcp install main.py --name "CryptoFearGreed"

Then enable it in your Claude Desktop configuration.

For other clients, add a server entry to your configuration file:

"mcpServers": { 
  "crypto-feargreed-mcp": { 
    "command": "uv", 
    "args": [ 
      "--directory", "/your/path/to/crypto-feargreed-mcp", 
      "run", 
      "main.py" 
    ]
  } 
}

Examples

After installation, ask:

"What's the current Crypto Fear & Greed Index?"
"Show me the Crypto Fear & Greed Index trend for the last 30 days."

Claude will automatically call the appropriate tools and provide responses.

License

This project is licensed under the MIT License. See the LICENSE file for details.

Acknowledgments

Built with MCP Python SDK.
Data provided by Alternative.me Fear & Greed Index API.

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