MCP Chart Server

A Model Context Protocol (MCP) server that integrates with Chart-IMG API to generate TradingView chart visualizations using Server-Sent Events (SSE) for real-time updates.

Features

Real-time Chart Generation: Generate TradingView charts with live progress updates
MCP Protocol Support: Works with Claude Desktop, Cline, and other MCP clients
SSE Integration: Real-time event streaming for chart generation progress
Professional Web Interface: Built-in API testing interface with live preview
Comprehensive API: Full REST API with status tracking and event history

Quick Start

1. Get API Key

2. Setup Environment

# Clone and setup
git clone <your-repo>
cd mcp-chart-server
npm install

# Set API key
echo "CHART_IMG_API_KEY=your_api_key_here" > .env

3. Run the Server

Option A: Web Interface (Development)

npm run dev
# Access: http://localhost:5000

Option B: STDIO MCP Server (Traditional)

npx tsx mcp-server.ts

Option C: HTTP MCP Server with SSE (Recommended)

npx tsx mcp-http-server.ts
# Or use the startup script:
./start-mcp-http.sh
# Server runs on: http://localhost:3001

The HTTP mode provides Server-Sent Events (SSE) for real-time chart generation updates and supports multiple concurrent clients.

MCP Client Configuration

Claude Desktop

STDIO Mode (Traditional): Add to claude_desktop_config.json:

{
  "mcpServers": {
    "chart-server": {
      "command": "npx",
      "args": ["tsx", "mcp-server.ts"],
      "cwd": "/path/to/mcp-chart-server",
      "env": {
        "CHART_IMG_API_KEY": "your_api_key"
      }
    }
  }
}

HTTP Mode (Recommended):

{
  "mcpServers": {
    "chart-server-http": {
      "url": "http://localhost:3001",
      "transport": "http"
    }
  }
}

Config File Locations:

macOS: ~/Library/Application Support/Claude/claude_desktop_config.json
Windows: %APPDATA%\Claude\claude_desktop_config.json

Cline/Continue

STDIO Mode:

{
  "name": "chart-server",
  "command": "npx",
  "args": ["tsx", "mcp-server.ts"],
  "cwd": "/path/to/mcp-chart-server",
  "env": {
    "CHART_IMG_API_KEY": "your_api_key"
  }
}

HTTP Mode:

{
  "name": "chart-server-http",
  "url": "http://localhost:3001",
  "type": "http"
}

HTTP MCP Server with SSE

The HTTP MCP server provides real-time communication through Server-Sent Events (SSE) and standard REST endpoints:

Core MCP Endpoints:

POST /mcp/initialize - Initialize MCP connection
POST /mcp/tools/list - List available tools
POST /mcp/tools/call - Execute tools

Real-time Communication:

GET /mcp/events/:clientId - SSE event stream for live updates
Chart generation progress, completion notifications, and errors

Management Endpoints:

GET /mcp/health - Server health and configuration status
GET / - Server information and endpoint documentation

SSE Event Types:

connection - Client connection status
chart_progress - Real-time chart generation updates
heartbeat - Keep-alive messages

Example SSE Usage:

const eventSource = new EventSource('http://localhost:3001/mcp/events/my-client');
eventSource.addEventListener('chart_progress', (event) => {
  const data = JSON.parse(event.data);
  console.log('Chart status:', data.type, data.message);
});

Available Tools

`generate_chart`

Generate TradingView charts with customizable parameters.

Example:

{
  "symbol": "NASDAQ:AAPL",
  "interval": "1D",
  "chartType": "candlestick",
  "width": 800,
  "height": 600,
  "indicators": [
    {"type": "sma", "period": 20},
    {"type": "rsi", "period": 14}
  ]
}

`get_chart_status`

Check generation progress and retrieve completed charts.

`get_available_symbols`

List available trading symbols from Chart-IMG API.

`get_recent_requests`

View recent chart generation history.

`health_check`

Verify API configuration and service status.

Supported Chart Types

Candlestick - Traditional OHLC candles
Line - Simple price line
Area - Filled area chart
Bar - OHLC bars
Heikin Ashi - Modified candlesticks

Technical Indicators

Moving Averages: SMA, EMA, WMA
Oscillators: RSI, MACD, Stochastic
Bollinger Bands
Volume indicators
And many more from TradingView

Symbol Format

Use TradingView symbol format: EXCHANGE:SYMBOL

Examples:

NASDAQ:AAPL - Apple Inc.
NYSE:TSLA - Tesla Inc.
BINANCE:BTCUSDT - Bitcoin/USDT
FOREX:EURUSD - EUR/USD pair

Rate Limits

Depends on your Chart-IMG subscription:

Basic: 1 req/sec, 50/day
Pro: 10 req/sec, 500/day
Mega: 15 req/sec, 1000/day
Ultra: 35 req/sec, 3000/day

Web Interface

Access the built-in interface at http://localhost:5000 for:

Interactive API testing
Real-time SSE event monitoring
Chart preview and download
Request/response inspection

API Endpoints

POST /api/v2/chart/generate - Generate chart
GET /api/v2/chart/status/:id - Check status
GET /api/v2/symbols - Available symbols
GET /api/v2/events - SSE connection
GET /api/health - Health check

Troubleshooting

Missing API Key

Error: CHART_IMG_API_KEY not found
Solution: Set environment variable or .env file

Invalid Symbol

Error: Symbol not found
Solution: Use EXCHANGE:SYMBOL format (e.g., NASDAQ:AAPL)

Rate Limited

Error: Too many requests
Solution: Check your Chart-IMG plan limits

Server Modes Comparison

Feature	Web Interface	STDIO MCP	HTTP MCP + SSE
Purpose	Development/Testing	Claude Desktop	Universal Clients
Transport	HTTP	Standard I/O	HTTP + SSE
Real-time Updates	WebSocket	None	Server-Sent Events
Multiple Clients	Yes	No	Yes
Language Support	Browser	MCP Clients Only	Any HTTP Client
Debugging	Browser DevTools	Logs	HTTP Tools + SSE

SSE Integration Details

The HTTP MCP server uses Server-Sent Events for real-time communication:

Connection Flow:

Client connects to /mcp/events/:clientId
Server establishes SSE stream
Real-time events sent during chart generation
Automatic reconnection on disconnect

Event Structure:

{
  "type": "chart_progress",
  "requestId": "req_1234567890_1", 
  "message": "Chart generation started",
  "timestamp": "2025-06-12T03:16:30.000Z",
  "data": {
    "symbol": "NASDAQ:AAPL",
    "status": "processing"
  }
}

Client Implementation:

class MCPSSEClient {
  constructor(baseUrl = 'http://localhost:3001') {
    this.baseUrl = baseUrl;
    this.clientId = `client_${Date.now()}`;
    this.eventSource = null;
  }

  connect() {
    this.eventSource = new EventSource(
      `${this.baseUrl}/mcp/events/${this.clientId}`
    );
    
    this.eventSource.onmessage = (event) => {
      console.log('SSE Event:', JSON.parse(event.data));
    };
    
    this.eventSource.addEventListener('chart_progress', (event) => {
      const data = JSON.parse(event.data);
      this.onChartProgress(data);
    });
  }

  onChartProgress(data) {
    console.log(`Chart ${data.requestId}: ${data.message}`);
  }

  async callTool(name, args) {
    const response = await fetch(`${this.baseUrl}/mcp/tools/call`, {
      method: 'POST',
      headers: { 'Content-Type': 'application/json' },
      body: JSON.stringify({
        jsonrpc: '2.0',
        id: Date.now(),
        method: 'tools/call',
        params: { name, arguments: args }
      })
    });
    return await response.json();
  }
}

// Usage with real-time updates
const client = new MCPSSEClient();
client.connect();

const result = await client.callTool('generate_chart', {
  symbol: 'NASDAQ:AAPL',
  interval: '1D',
  chartType: 'candlestick'
});
// SSE events will show progress in real-time

Development

# Start web server (port 5000)
npm run dev

# Run STDIO MCP server
npx tsx mcp-server.ts

# Run HTTP MCP server with SSE (port 3001)
npx tsx mcp-http-server.ts

# Type checking
npm run check

# Test HTTP MCP server
node test-mcp-http.js

# View client examples
cat examples/client-examples.md

Client Examples

See examples/client-examples.md for complete implementations in:

JavaScript/Node.js - Full SSE client with real-time updates
Python - Threading-based SSE client with error handling
cURL - Command-line testing and debugging

Each example includes proper SSE event handling, chart generation tracking, and error management.

MCP Client Connection Issues

If your MCP client shows "Waiting for server to respond to initialize request...", the HTTP MCP server is working correctly. This typically indicates:

Incorrect server URL - Ensure client connects to http://localhost:3001
Missing Content-Type header - Include Content-Type: application/json
Network connectivity - Verify port 3001 is accessible
Client timeout - Increase timeout settings in your MCP client

Quick Test:

# Verify server is responding
curl -X POST http://localhost:3001/mcp/initialize \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","id":1,"method":"initialize","params":{"protocolVersion":"2024-11-05","capabilities":{},"clientInfo":{"name":"test","version":"1.0"}}}'

See MCP_CLIENT_TROUBLESHOOTING.md for detailed debugging steps and client configuration examples.

License

MIT License - see LICENSE file for details.

Deploy Server

HTTP connection URL

security – no known vulnerabilities

license - not found

quality - confirmed to work

How are these scores calculated?

remote-capable server

The server can be hosted and run remotely because it primarily relies on remote services or has no dependency on the local environment.

Tools

A Model Context Protocol server that generates TradingView chart visualizations with real-time updates, enabling AI assistants to create and display financial charts through an integration with Chart-IMG API.

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MCP Chart Server

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Features

Quick Start

1. Get API Key

2. Setup Environment

3. Run the Server

MCP Client Configuration

Claude Desktop

Cline/Continue

HTTP MCP Server with SSE

Available Tools

`generate_chart`

`get_chart_status`

`get_available_symbols`

`get_recent_requests`

`health_check`

Supported Chart Types

Technical Indicators

Symbol Format

Rate Limits

Web Interface

API Endpoints

Troubleshooting

Server Modes Comparison

SSE Integration Details

Development

Client Examples

MCP Client Connection Issues

License

Tools

Related MCP Servers

Deriv API MCP Server

Tradovate MCP Server

PowerPoint MCP Server

MCP Server Chartofficial

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