Paper modeUS market
Get MCP Open app

GUARD

BRAKES FOR
YOUR TRADING
AGENT

01 · one way in

01 · The gate

Your agent talks to the guard. The guard talks to Robinhood.

Point Claude, Cursor or Codex at the guard instead of Robinhood's MCP server. Quotes, positions and research pass straight through. Every order stops at the gate first, and only goes on if every one of your rules says yes.

paperdefault mode
—Robinhood on this machine
Get the MCP server→
02 · size, pace, losses

02 · The limits

Size, pace, losses.

An over-eager agent buys too big, too often, and right after a loss. Three meters stop all three. Splitting one big order into small ones does not help: the daily total counts every buy.

Reading today's numbers…

Change a limit in the app→

03 · The rules

Ten rules. Plain code, not a model.

The agent can read them. It can never edit them. Only you can, in the app or the terminal.

  1. Reading your rules…
04 · every decision, chained

04 · The record

Every decision, chained.

Each hold and each order let through is written down with its reasons. Every line carries the hash of the line before it, so an edited or deleted line breaks the chain and shows.

—decisions on record
—chain check
Read the audit log→
05 · nothing hidden

05 · Honest limits

What it is not.

Not custody. The guard holds no money and no password. Robinhood signs you in with OAuth; the tokens stay on this machine.

Not a strategy. It only ever stops orders. It never starts one and never tells you what to buy.

Not everywhere. Live mode needs a US Robinhood account with the Agentic account turned on. Paper mode works anywhere.

Not perfect data. Prices come from Yahoo Finance and earnings dates from Nasdaq's public calendar. Exchange holidays and early closes follow the NYSE rules. If a source does not answer, buys are held.

Not advice. Not affiliated with Robinhood.

ARSA Guard

Brakes first. Then speed.