MCP Server Fear & Greed Index
A Model Context Protocol (MCP) server that provides access to the CNN Fear & Greed Index for the US stock market. This server fetches real-time market sentiment data and presents it in both structuredContent and text content.
Features
- Real-time Fear & Greed Index: Get the current market sentiment score (0-100)
- Historical Comparisons: View previous close, week, month, and year data
- Detailed Market Indicators: Access individual component scores including:
- Market Momentum (S&P 500 & S&P 125)
- Stock Price Strength & Breadth
- Put/Call Options Ratio
- Market Volatility (VIX)
- Junk Bond Demand
- Safe Haven Demand
- Flexible Output: Choose between structured markdown or raw JSON format
Requirements
- Node.js 18 or newer
- VS Code, Cursor, Windsurf, Claude Desktop or any other MCP client
Getting Started
Local (Stdio)
First, install the Fear & Greed MCP server with your client. A typical configuration looks like this:
{
"mcpServers": {
"mcp-server-fear-greed": {
"command": "npx",
"args": [
"-y",
"mcp-server-fear-greed@latest"
]
}
}
}
Install in VS Code
You can also install the mcp-server-fear-greed MCP server using the VS Code CLI:
# For VS Code
code --add-mcp '{"name":"mcp-server-fear-greed","command":"npx","args":["mcp-server-fear-greed@latest"]}'
After installation, the Fear & Greed MCP server will be available for use with your GitHub Copilot agent in VS Code.
Install in Cursor
Go to Cursor Settings -> MCP -> Add new MCP Server. Name to your liking, npx mcp-server-fear-greed. You can also verify config or add command like arguments via clicking Edit.
{
"mcpServers": {
"mcp-server-fear-greed": {
"command": "npx",
"args": [
"mcp-server-fear-greed@latest"
]
}
}
}
Install in Windsurf
Follow Windsurf MCP documentation. Use following configuration:
{
"mcpServers": {
"mcp-server-fear-greed": {
"command": "npx",
"args": [
"mcp-server-fear-greed@latest"
]
}
}
}
Install in Claude Desktop
Follow the MCP install guide, use following configuration:
{
"mcpServers": {
"mcp-server-fear-greed": {
"command": "npx",
"args": [
"mcp-server-fear-greed@latest"
]
}
}
}
Remote (SSE / Streamable HTTP)
At the same time, use --port $your_port arg to start the browser mcp can be converted into SSE and Streamable HTTP Server.
# normal run remote mcp server
npx mcp-server-fear-greed --port 8089
You can use one of the two MCP Server remote endpoint:
- Streamable HTTP(Recommended):
http://127.0.0.1::8089/mcp - SSE:
http://127.0.0.1::8089/sse
And then in MCP client config, set the url to the SSE endpoint:
{
"mcpServers": {
"mcp-server-fear-greed": {
"url": "http://127.0.0.1::8089/sse"
}
}
}
url to the Streamable HTTP:
{
"mcpServers": {
"mcp-server-fear-greed": {
"type": "streamable-http", // If there is MCP Client support
"url": "http://127.0.0.1::8089/mcp"
}
}
}
In-memory call
If your MCP Client is developed based on JavaScript / TypeScript, you can directly use in-process calls to avoid requiring your users to install the command-line interface to use Fear & Greed MCP.
import { Client } from '@modelcontextprotocol/sdk/client/index.js';
import { InMemoryTransport } from '@modelcontextprotocol/sdk/inMemory.js';
// type: module project usage
import { createServer } from 'mcp-server-fear-greed';
// commonjs project usage
// const { createServer } = await import('mcp-server-fear-greed')
const client = new Client(
{
name: 'test fear greed client',
version: '1.0',
},
{
capabilities: {},
},
);
const server = createServer();
const [clientTransport, serverTransport] = InMemoryTransport.createLinkedPair();
await Promise.all([
client.connect(clientTransport),
server.connect(serverTransport),
]);
// list tools
const result = await client.listTools();
console.log(result);
// call tool
const toolResult = await client.callTool({
name: 'get_fear_greed_index',
arguments: {
format: 'json'
},
});
console.log(toolResult);
API Reference
Tool: get_fear_greed_index
Fetches the current Fear & Greed Index and related market indicators.
Parameters
format(optional): Output format"structured"(default): Returns formatted markdown with organized data"json": Returns raw JSON data
Example Usage
// Get structured output
await client.callTool("get_fear_greed_index");
// Get JSON output
await client.callTool("get_fear_greed_index", { format: "json" });
Response Structure
The tool returns data in the following structure:
{
"fear_and_greed": {
"score": 75,
"rating": "greed",
"timestamp": "2025-07-18T23:59:57+00:00",
"previous_close": 75.31,
"previous_1_week": 75.26,
"previous_1_month": 54.29,
"previous_1_year": 45.94
},
"fear_and_greed_historical": {
"timestamp": 1752883197000,
"score": 75,
"rating": "greed"
},
"market_momentum_sp500": {
"timestamp": 1752871567000,
"score": 61.2,
"rating": "greed"
},
"market_momentum_sp125": {
"timestamp": 1752871567000,
"score": 61.2,
"rating": "greed"
},
"stock_price_strength": {
"timestamp": 1752883197000,
"score": 80,
"rating": "extreme greed"
},
"stock_price_breadth": {
"timestamp": 1752883197000,
"score": 84,
"rating": "extreme greed"
},
"put_call_options": {
"timestamp": 1752871897000,
"score": 79.6,
"rating": "extreme greed"
},
"market_volatility_vix": {
"timestamp": 1752869701000,
"score": 50,
"rating": "neutral"
},
"market_volatility_vix_50": {
"timestamp": 1752869701000,
"score": 50,
"rating": "neutral"
},
"junk_bond_demand": {
"timestamp": 1752877800000,
"score": 88.8,
"rating": "extreme greed"
},
"safe_haven_demand": {
"timestamp": 1752868799000,
"score": 81.4,
"rating": "extreme greed"
}
}
Fear & Greed Index Ratings
The index uses the following rating scale:
- 0-25: Extreme Fear
- 26-45: Fear
- 46-55: Neutral
- 56-75: Greed
- 76-100: Extreme Greed
Development
Access http://127.0.0.1:6274/:
npm run dev
Error Handling
The server includes comprehensive error handling:
- Network request failures are caught and reported
- Invalid API responses are handled gracefully
- Missing data fields are filled with sensible defaults
- All errors include descriptive messages