Robinhood let AI agents trade real money. The only safety check is optional.
Robinhood's MCP lets an AI agent place real trades with no broker-side cap. A few simple rules at the gateway stop a rogue or hijacked agent draining the account.
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Prompt Injection
4 posts
Blocking Outbound Exfiltration Through MCP Fetch and HTTP Tools
Stop autonomous agents POSTing your data to attacker domains. PolicyLayer's URL allowlists turn MCP fetch and HTTP tools into deterministic one-way readers.
Tool-Result Injection: The MCP Attack System Prompts Miss
A concrete walkthrough of indirect prompt injection delivered via MCP tool responses. The attack, the model's reasoning, and the policy that stops it.
System Prompts vs. Transport Firewalls: Why System Prompts Do Not Equal Security
Discover why system prompts fail as a security boundary for AI agents, and how transport-level MCP proxies provide deterministic guardrails.