Breaking

Public.com Releases MCP Server for Controlling Brokerage by Natural Language

June 28, 2026 at 06:44 EDT

AI Agents
Open Source
Finance

Public.com, the U.S. online brokerage, has released an open-source "MCP server" that lets AI assistants place orders and manage portfolios through natural-language instructions. It is distributed as the GitHub repository PublicDotCom/publicdotcom-mcp-server under the Apache 2.0 license.

Agentic Brokerage · Open Source

Trade Stocks, Options & Crypto by Talking to an AI

Public.com has open-sourced an MCP server that connects AI assistants like Claude Desktop to its trading API — letting users view portfolios, pull quotes and place real orders through natural-language conversation.

v0.3.1

Latest release, Apache 2.0 license

3.10+

Python required, via pip install

1st

Self-billed "world's first Agentic Brokerage"

What the server can do

Capabilities split into read and write operations

READ

Portfolio: positions, buying power, open orders
Real-time quotes & historical OHLCV bars
Option expirations, chains & Greeks
Preflight — simulate order impact

WRITE

Single-leg orders
Multi-leg orders (e.g. spreads)
Short orders
Destructive: cancel / replace orders

The conversational trading flow

AI Assistant

Claude / ChatGPT

→

MCP Server

+ Preflight check

→

Trading API

Order placed

UPSIDE

Developers value calling a full trading API directly from an agent — research, quotes and order placement in one conversation. Alpaca and others are pushing the same natural-language trading trend.

CAUTION

Automating real trades raises hallucination, API-error and regulatory risks. Pre-order checks like preflight are designed to mitigate the danger of letting an AI act on live capital.

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