Connecting MCP is the easy part. The failure mode is an unconstrained agent with buying power. Set these controls before the first live order.
Account boundary
- Fund the Agentic account with a pilot ceiling only.
- Keep long-term holdings in your primary account — agents trade only in Agentic.
- Revisit the ceiling after a week of logs, not after a hot streak.
Confirmation defaults
Robinhood’s equity tools expect review before place unless you explicitly say to skip review. A generic “place this order” is not a bypass. Keep that default.
Kill switch
- Define a STOP phrase in your standing instructions.
- On STOP: cancel open agent-originated orders, refuse new place_* calls, and summarize positions.
- If the host misbehaves, disconnect the Robinhood Trading MCP connector entirely.
The prompt templates with a STOP rule bake this in.
Session hygiene
- Re-state account_number and caps at the start of every session.
- Log every approved order (symbol, size, rationale, time).
- Never paste API secrets into chat — Robinhood MCP auth is browser OAuth.
- Assume the agent can err; you own the blotter.