Alpaca for stock trading and investing
Alpaca is a brokerage with an API, and its official server is the top pick for trading and investing because it is the one option here that can actually place an order. The other four picks fetch numbers; Alpaca acts on them. When a thesis turns into a decision, this is the server that submits the trade.
It lets an agent read account state, review and manage orders, and place stock, option, and crypto orders from natural language. That execution role is why it ranks first: research servers tell you what to do, and Alpaca does it.
How Alpaca fits
Execution runs through place_stock_order, place_option_order, and place_crypto_order, with replace_order_by_id and cancel_order_by_id to amend or pull an order already working. An agent checks its footing first with get_account_info for buying power and equity, get_account_config to read trading settings (and update_account_config to change them), then get_orders and get_order_by_id to see what is open or filled. get_portfolio_history and get_account_activities give it value over time and the record of fills and transfers, so it can reason about a position before adding to it.
The honest limit is research depth. The tools here cover account state, orders, and live market data (quotes, bars, trades, snapshots, even news and movers), but not deeper research: there is no fundamentals lookup and no economic series, so statement-level analysis and macro context come from elsewhere. That is why the siblings sit alongside it. Twelve Data and Alpha Vantage add deeper history and technical indicators; Financial Modeling Prep brings fundamentals and filings; FRED adds macroeconomic context. None of them can place the order, and Alpaca cannot replace their data. Pair the research servers with Alpaca and the loop closes: pull the data with one, act with this one.
Tools you would use
| Tool | What it does |
|---|---|
| get_account_info | Returns account details including buying power and equity. |
| get_account_config | Returns the account's trading configuration. |
| update_account_config | Updates the account's trading configuration. |
| get_portfolio_history | Returns the account's portfolio value history over time. |
| get_account_activities | Returns account activity records such as fills and transfers. |
| get_orders | Lists orders filtered by status. |
| get_order_by_id | Returns a single order by its id. |
| place_stock_order | Places a stock or ETF order. |
| place_option_order | Places an options order. |
| place_crypto_order | Places a cryptocurrency order. |
FAQ
- Can the Alpaca server actually place trades?
- Yes. place_stock_order, place_option_order, and place_crypto_order submit real orders, and replace_order_by_id and cancel_order_by_id amend or cancel ones already working. It is the only execution layer among the picks for this task.
- Does Alpaca's server provide market data for research?
- It includes live market data (quotes, bars, trades, snapshots, and news), but not fundamentals or macroeconomic series. For statement-level fundamentals, deep history, indicators, or macro data, pair it with a data server like Twelve Data, Alpha Vantage, Financial Modeling Prep, or FRED.
- How does an agent check buying power before trading?
- get_account_info returns account details including buying power and equity, and get_account_config reads the trading configuration. An agent typically checks both before placing an order.