Publicdotcom Mcp Server

Public.com MCP Server

[](LICENSE) [](https://python.org) [](https://modelcontextprotocol.io)

An MCP (Model Context Protocol) server that connects AI assistants to your Public.com brokerage account. Trade stocks, options, and crypto — get quotes, manage orders, and view your portfolio — all through natural language.

> Disclaimer: For illustrative and informational purposes only. Not investment advice or recommendations. Use at your own risk.

Tools

Read-Only

| Tool | Description | |------|-------------| | check_setup | Verify API credentials and connectivity | | get_accounts | List all brokerage accounts | | get_portfolio | View positions, equity, buying power, open orders | | get_orders | List active/open orders | | get_order | Get status of a specific order | | get_history | Transaction history (trades, deposits, dividends, etc.) | | get_quotes | Real-time quotes for stocks, crypto, options | | get_historic_bars | OHLCV historic bars for equities, crypto, options, or indices | | get_instrument | Details about a specific tradeable instrument | | get_all_instruments | List all available instruments with filters | | get_option_expirations | Available expiration dates for options | | get_option_chain | Full option chain (calls + puts) for a symbol | | get_option_greeks | Greeks (delta, gamma, theta, vega, rho, IV) for multiple options | | get_option_greek | Greeks for a single option symbol | | preflight_order | Estimate costs/impact before placing a single-leg order | | preflight_multileg_order | Estimate costs for multi-leg options strategies | | preflight_short_order | Estimate costs before placing a short-sale order | | preflight_call_credit_spread | Estimate costs for a Bear Call Spread | | preflight_call_debit_spread | Estimate costs for a Bull Call Spread | | preflight_put_credit_spread | Estimate costs for a Bull Put Spread | | preflight_put_debit_spread | Estimate costs for a Bear Put Spread |

Write (Destructive)

| Tool | Description | |------|-------------| | place_order | Place a single-leg order (stocks, crypto, options) | | place_multileg_order | Place multi-leg orders (spreads, straddles, etc.) | | place_call_credit_spread | Place a Bear Call Spread | | place_call_debit_spread | Place a Bull Call Spread | | place_put_credit_spread | Place a Bull Put Spread | | place_put_debit_spread | Place a Bear Put Spread | | place_short_order | Place an equity short-sale order | | flatten_and_go_short | Sell an existing long position then go short (experimental) | | cancel_order | Cancel an existing order | | cancel_and_replace_order | Atomically cancel and replace an order |

Prerequisites

• Python 3.10+
• Public.com account — Sign up
• Public.com API key — Get one here

Installation

pip install publicdotcom-mcp-server

Or install from source:

git clone https://github.com/publicdotcom/publicdotcom-mcp-server.git
cd publicdotcom-mcp-server
pip install .

Configuration

Set your API credentials as environment variables:

# Required
export PUBLIC_COM_SECRET=your_api_secret_key

# Optional — sets a default account so you don't need to specify it each time
export PUBLIC_COM_ACCOUNT_ID=your_account_id

Usage

Claude Desktop

Add this to your Claude Desktop config (~/Library/Application Support/Claude/claude_desktop_config.json on macOS):

{
  "mcpServers": {
    "public-com": {
      "command": "publicdotcom-mcp-server",
      "env": {
        "PUBLIC_COM_SECRET": "your_api_secret_key",
        "PUBLIC_COM_ACCOUNT_ID": "your_account_id"
      }
    }
  }
}

Claude Desktop (using uvx)

If you prefer using uvx (no pre-install needed):

{
  "mcpServers": {
    "public-com": {
      "command": "uvx",
      "args": ["publicdotcom-mcp-server"],
      "env": {
        "PUBLIC_COM_SECRET": "your_api_secret_key",
        "PUBLIC_COM_ACCOUNT_ID": "your_account_id"
      }
    }
  }
}

Running Directly

# stdio transport (default — for Claude Desktop, Claude Code, etc.)
publicdotcom-mcp-server

# Or run as a Python module
python -m publicdotcom_mcp_server

Hosted / Remote Deployment

For remote deployments (behind a reverse proxy or load balancer), switch to the streamable-HTTP transport:

export MCP_TRANSPORT=streamable-http
export PUBLIC_COM_SECRET=your_api_secret_key
export PORT=8000  # optional, defaults to 8000
export HOST=0.0.0.0  # optional, defaults to 0.0.0.0
publicdotcom-mcp-server

In this mode the server listens for MCP requests at POST /mcp. Clients authenticate per-request via an Authorization: Bearer header, which takes priority over the PUBLIC_COM_SECRET environment variable — useful for multi-tenant deployments.

Testing with MCP Inspector

npx @modelcontextprotocol/inspector publicdotcom-mcp-server

Development

# Clone and install in development mode
git clone https://github.com/publicdotcom/publicdotcom-mcp-server.git
cd publicdotcom-mcp-server
pip install -e ".[dev]"

# Run tests
pytest

# Run the server locally
python -m publicdotcom_mcp_server

How It Works

This server wraps the publicdotcom-py Python SDK, exposing each API operation as an MCP tool. The MCP protocol allows AI clients to discover and call these tools through a standardized interface.

AI Client (Claude, etc.)
    ↕ MCP Protocol (stdio)
Public.com MCP Server
    ↕ HTTPS
Public.com Trading API

All tools include proper MCP tool annotations:

• Read-only tools are marked with readOnlyHint: true
• Write tools are marked with destructiveHint: true

License

[Apache 2.0](LICENSE)

Source & license

This open-source MCP server is cataloged on AgentStack and links to its original source — we do not rehost the code.

• Author: PublicDotCom
• Source: PublicDotCom/publicdotcom-mcp-server
• License: Apache-2.0

Install and usage instructions live in the source repository linked above.