Access Crypto Fear & Greed Index Data

crypto-feargreed-mcp is an MCP server that exposes the Crypto Fear & Greed Index, powered by data from Alternative.me. It provides two resources for direct lookups: fng://current returns the latest index value and classification (for example, a value of 45 classified as "Fear"), and fng://history/{days} returns historical index values for a specified number of days, each with its date, value, and classification. On the tool side, get_current_fng_tool() and get_historical_fng_tool(days) mirror the two resources for MCP clients that only support tools rather than resources. A third tool, analyze_fng_trend(days), goes further than a raw dump: it computes statistics over the requested window, including the latest value and classification, the average value, the overall trend direction (for example "falling"), and the number of data points analyzed. A prompt template, interpret_fng, builds a ready-to-use prompt asking for an interpretation of a given index value and what it means for cryptocurrency markets, specifically Bitcoin.

Use it when an agent or workflow needs current or historical crypto market sentiment - for example, answering "what's the current Fear & Greed Index?" or "show me the trend for the last 30 days", or feeding sentiment data into a broader trading or research assistant. It is not a fit for anything beyond this single sentiment metric: it does not provide price data, order books, or any other market data itself - it is scoped entirely to the Fear & Greed Index as published by Alternative.me.

• 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, including average value and trend direction.
• Tool-Only Support: every resource is also available as an equivalent tool, for MCP clients that only support tool calls.
• Prompt Generation: a prompt template for interpreting what a given index value means for the market.

The recommended path is installing via Smithery for Claude Desktop:

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

Alternatively, clone the repository directly and run it manually:

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

For Claude Desktop specifically, it can also be installed with mcp install main.py --name "CryptoFearGreed" and then enabled in the Claude Desktop configuration. For other MCP clients, a config entry specifies the uv command with a --directory flag pointing at the cloned repo, running main.py. The project is released under the MIT License.

Crypto traders and researchers who want sentiment data available to an AI assistant without leaving the conversation, and developers building trading-assistant or market-research agents that need a lightweight, single-purpose sentiment signal alongside their other data sources.