README.md•7.49 kB
# MCP Server Fear & Greed Index
[](https://www.npmjs.com/package/mcp-server-fear-greed)
[](https://cursor.com/install-mcp?name=mcp-server-fear-greed&config=JTdCJTIyY29tbWFuZCUyMiUzQSUyMm5weCUyMC15JTIwbWNwLXNlcnZlci1mZWFyLWdyZWVkJTQwbGF0ZXN0JTIyJTdE)
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:
```js
{
"mcpServers": {
"mcp-server-fear-greed": {
"command": "npx",
"args": [
"-y",
"mcp-server-fear-greed@latest"
]
}
}
}
```
<details><summary><b>Install in VS Code</b></summary>
You can also install the mcp-server-fear-greed MCP server using the VS Code CLI:
```bash
# 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.
</details>
<details>
<summary><b>Install in Cursor</b></summary>
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`.
```js
{
"mcpServers": {
"mcp-server-fear-greed": {
"command": "npx",
"args": [
"mcp-server-fear-greed@latest"
]
}
}
}
```
</details>
<details>
<summary><b>Install in Windsurf</b></summary>
Follow Windsurf MCP [documentation](https://docs.windsurf.com/windsurf/cascade/mcp). Use following configuration:
```js
{
"mcpServers": {
"mcp-server-fear-greed": {
"command": "npx",
"args": [
"mcp-server-fear-greed@latest"
]
}
}
}
```
</details>
<details>
<summary><b>Install in Claude Desktop</b></summary>
Follow the MCP install [guide](https://modelcontextprotocol.io/quickstart/user), use following configuration:
```js
{
"mcpServers": {
"mcp-server-fear-greed": {
"command": "npx",
"args": [
"mcp-server-fear-greed@latest"
]
}
}
}
```
</details>
### 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.
```bash
# 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:
```js
{
"mcpServers": {
"mcp-server-fear-greed": {
"url": "http://127.0.0.1::8089/sse"
}
}
}
```
`url` to the Streamable HTTP:
```js
{
"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.
```js
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
```javascript
// 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:
```json
{
"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/:
```bash
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