Alpaca for AI agents

Alpaca is a brokerage platform for commission-free stock and crypto trading, with market data and an API for building automated trading strategies. Traders and developers use it to place and manage orders. Connect it once through Arc0, and your agent, or Claude, ChatGPT and Cursor, can use it through one MCP endpoint, limited to what each user approved.

Connect Alpaca See the 100 actions ↓

E-commerceOAuth 2.0MCP + RESTalpaca.markets

AUDIT LOG · ALPACAPOLICY: acme-support

09:41:07 · claude · u_8f2read

alpaca.get_news

Get News✓ allowed · 212ms

09:41:08 · claude · u_8f2read

alpaca.get_clock

Get Clock✓ allowed · 164ms

09:41:09 · claude · u_8f2write

alpaca.create_watchlist

Create Watchlist✓ approved · approved by user

09:41:12 · claude · u_8f2destructive

alpaca.delete_watchlist_by_id

Delete Watchlist By ID✕ blocked · policy: deny

EVERY ALPACA CALL, ON THE RECORD

01 · USE CASES

What agents do in Alpaca.

Review open positions and orders

Pull all open positions and outstanding orders on the account before deciding what to change.

Build out a watchlist

Create a new watchlist and add specific stock or crypto symbols a user wants to track.

Require approval before closing all positions

Liquidating every open position and canceling all orders is destructive, so it needs explicit approval first.

02 · ACTIONS

100 Alpaca actions, graded by risk.

Every Alpaca action is tagged read, write or destructive, so one policy covers the whole app and new actions inherit the right default.

read

Look things up. Allowed by default.

alpaca.get_news
Get News
alpaca.get_clock
Get Clock
alpaca.get_account
Get Account
alpaca.get_calendar
Get Calendar
alpaca.get_exchanges
Get Exchanges
alpaca.get_all_orders
Get All Orders
alpaca.get_conditions
Get Stock Conditions
alpaca.get_pdt_status
Get PDT Status
alpaca.get_watchlists
Get Watchlists
alpaca.get_bars_stocks
Get Historical Stock Bars
alpaca.get_option_bars
Get Options Historical Bars
alpaca.get_most_actives
Get Most Active Stocks
alpaca.get_option_chain
Get Option Chain
alpaca.get_subscription
Get Subscription
alpaca.get_open_position
Get Open Position
alpaca.get_option_trades
Get Options Historical Trades

+ 68 MORE

write

Create and change things. Allow, or ask the user first.

alpaca.create_watchlist
Create Watchlist
alpaca.add_asset_to_watchlist
Add Asset to Watchlist
alpaca.update_watchlist_by_id
Update Watchlist By ID
alpaca.update_watchlist_by_name
Update Watchlist By Name
alpaca.update_watchlist_by_name2
Update Watchlist By Name (v2)
alpaca.create_watchlist_for_account
Create Watchlist
alpaca.update_trading_configurations
Update Trading Configurations
alpaca.add_asset_to_watchlist_by_name
Add Asset to Watchlist by Name
alpaca.upload_account_cip
Upload Account CIP Information
alpaca.patch_account_configurations
Update Account Configurations

destructive

Delete, cancel or archive. Ask first, or deny outright.

alpaca.delete_watchlist_by_id
Delete Watchlist By ID
alpaca.delete_all_open_positions
Delete All Open Positions
alpaca.delete_unsubscribe_account
Delete Unsubscribe Account
alpaca.remove_asset_from_watchlist
Remove Asset From Watchlist
alpaca.remove_symbol_from_watchlist
Remove Symbol From Watchlist
alpaca.delete_all_orders_for_account
Delete All Orders for Account

03 · HOW IT WORKS

Alpaca in three steps.

01Your users connect AlpacaThey sign in to Alpaca on Arc0 Connect, under your brand, and approve the access you ask for.
02You set the rulesReads run, writes like “create Watchlist” can wait for the user, and “delete Watchlist By ID” can be denied outright.
03Any agent can actYour agent calls Alpaca through the Arc0 SDK or MCP, and so can Claude, ChatGPT and Cursor. Every call lands on the audit log.

POLICY.TS

await arc0.policies.set('alpaca', {
  read: 'allow',
  write: 'ask',        // create_watchlist
  destructive: 'deny',  // delete_watchlist_by_id
})

# Claude Code: the same connection, one URL
$ claude mcp add --transport http arc0 \
    https://mcp.arc0.ai/u/u_8f2

04 · AUTH AND DATA

How Alpaca connects.

Users sign in to Alpaca on Arc0 Connect and approve the scopes you request. Build with Arc0’s Alpaca OAuth app, or bring your own so the Alpaca consent screen names you. Tokens refresh automatically, and you can export them whenever you want.

The same Alpaca connection serves your agent over MCP and your own backend over REST and the proxy, so a user connects once. How Arc0 handles credentials →

AUTH: API key · OAuth 2.0
CREDENTIALS: Per-tenant encrypted vault
MODEL SEES: Results only, never credentials
AUDIT LOG: Every call, on every plan

05 · WORKS WITH

Use Alpaca from any agent.

Claude

ChatGPT

Cursor

Codex

VS Code

OpenAI Agents SDK

Claude Agent SDK

Vercel AI SDK

Mastra

LangGraph

06 · RELATED

More e-commerce apps.

Shopify407 actions

Clover209 actions

Cloudcart150 actions

Baselinker106 actions

ALL E-COMMERCE APPS →

07 · FAQ

Alpaca and Arc0, answered.

Q01

Can I use Alpaca with Claude, ChatGPT or Cursor?

Yes. Connect Alpaca to Arc0 once, then add your Arc0 MCP URL to Claude, ChatGPT, Cursor, Claude Code or any other remote-MCP client. Each assistant only gets the Alpaca actions you allow.

Q02

How do users connect Alpaca?

Q03

Which Alpaca actions can my agent take?

100 in total: 84 read, 10 write and 6 destructive, such as “create Watchlist”. Your policies decide which of them each agent may call.

Q04

Can I stop my agent from deleting things in Alpaca?

Yes. Actions like “delete Watchlist By ID” are graded destructive. Set destructive actions to deny, or to ask so the user approves each one, and blocked calls still show up on the audit log.

Q05

Can my own backend call Alpaca too?

Yes. The same Alpaca connection is available over REST and through the Arc0 proxy, so your product and your agent share one connection per user.

Get started

Plug Alpaca into your agent.

Your users connect Alpaca once, under your brand. Your agent gets 100 actions behind your policies, with every call on the record.

Connect Alpaca Browse all apps →

Free to build · MCP + REST · Audit log on every plan