What is the Model Context Protocol (MCP)?

The Model Context Protocol, or MCP, is a standard way for an AI client to discover and call tools provided by a separate server. An MCP connection can expose structured actions and data, but it does not decide what a user should do. The client, server, broker, permissions, and authorization flow all remain important parts of the system. Last updated 2026-09-01.

An MCP client is the application where a person interacts with an AI model. An MCP server publishes tools and handles requests for a connected service. The protocol gives the client a structured interface instead of requiring the model to invent an API call from prose. Authentication and authorization are separate concerns: an MCP server may redirect a person to a service's own login and consent page.

In a trading workflow, a tool might read account information, retrieve permitted market data, or submit an order. The exact tools and permissions are controlled by the service that publishes them and can change. A protocol connection is therefore not the same thing as a blanket account permission, and a conversation is not proof that an action succeeded.

MCP can connect a general-purpose AI client to a broker's official tools without giving the AI your brokerage password. Ask which actions are exposed, how consent is granted, what account or asset boundary applies, and how access can be revoked. Fincai uses the Robinhood Trading MCP as one part of its brokerage integration.

MCP improves interoperability; it does not remove the need for least-privilege authorization, careful review, independent verification, and a plan for network or tool errors. The Robinhood setup guide covers OAuth boundaries, while Fincai's product pages explain the additional analysis, options, and strategy layer.

Fincai is for informational purposes only and is not a registered investment adviser. It does not provide personalized financial advice. Trading stocks and options involves risk, including the possible loss of principal.

Not affiliated with or endorsed by Robinhood Markets, Inc.

MCP client: the AI application a person uses
MCP server: the service that publishes structured tools
Authorization: the consent and permission boundary
Independent verification: confirm account activity outside the conversation