llm-trading-agent-security

To secure an autonomous trading agent against prompt injection, apply prompt sanitization to detect and reject injection patterns in external data before it reaches execution-capable prompts. This prevents malicious inputs from triggering unauthorized transactions.

To prevent runaway transactions in a DeFi arbitrage bot, enforce hard single-transaction and daily spend limits with recorded accounting. Implementing circuit breakers also halts the bot automatically on abnormal drawdowns or consecutive losses.

The best way to protect trading agent wallet keys from exposure is using wallet isolation and secret managers. Never embed primary treasury keys in agent code; instead, use ephemeral hot wallets for signing operations.

To stop slippage and failing trades in autonomous on-chain execution, require pre-send simulation results and min_amount_out checks. These execution guards verify the expected outcome before the agent signs and broadcasts the transaction.

Yes, you can use circuit breakers to halt an autonomous trading agent automatically. They trigger on predefined drawdowns, consecutive losses, or invalid state conditions, ensuring every decision is auditable and preventing further financial loss.

Relying solely on spend limits for autonomous trading security leaves gaps in prompt hygiene and key management. Spend limits stop runaway transfers but do not prevent unauthorized access, so you must combine them with simulation checks and secret-managed wallet isolation.