crypto-feargreed-mcp
# 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](https://smithery.ai/server/@kukapay/crypto-feargreed-mcp):
```bash
npx -y @smithery/cli install @kukapay/crypto-feargreed-mcp --client claude
```
Clone the repository:
```bash
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](LICENSE) file for details.
## Acknowledgments
- Built with [MCP Python SDK](https://github.com/modelcontextprotocol/python-sdk).
- Data provided by [Alternative.me Fear & Greed Index API](https://api.alternative.me/fng/).TDQS
Scored across 3 tools
The tools have overlapping purposes that could cause confusion. 'analyze_fng_trend' and 'get_historical_fng_tool' both retrieve historical data with a 'days' parameter, making their boundaries unclear. 'get_current_fng_tool' is distinct but the other two appear to serve similar functions with minor differences in output format.
The naming follows a mixed convention. 'analyze_fng_trend' uses snake_case with a verb_noun pattern, while 'get_current_fng_tool' and 'get_historical_fng_tool' also use snake_case but append '_tool' inconsistently. The pattern is readable but lacks full consistency across all tools.
With 3 tools, the count is reasonable for a focused server on Crypto Fear & Greed Index data. It's slightly thin but covers current, historical, and trend analysis, which aligns well with the domain scope without being overly complex.
The tool surface covers basic retrieval and analysis of the index, but there are notable gaps. For example, there's no tool for comparing multiple time periods, setting alerts, or integrating with other crypto data, which could limit agent workflows in a broader crypto analysis context.