How do I secure my AI agent wallet?
Secure an AI agent wallet by layering three defenses — non-custodial key management (MoltPe uses Shamir secret sharing so no single party holds a complete key), strict spending policies at the infrastructure level (daily caps, per-transaction caps, recipient allowlists, cooldowns), and separation of duties (the agent never sees or signs with the raw key; it issues intent, infrastructure enforces policies, threshold signers produce the signature). Start conservative with tight caps, expand as you verify agent behavior. MoltPe is AI-native payment infrastructure that gives AI agents isolated wallets with programmable spending policies for autonomous USDC stablecoin transactions.
The short version
- Key management: Use a non-custodial wallet with key splitting (MoltPe uses Shamir secret sharing across user, hardware, and platform shards). The agent never touches the raw key.
- Spending policies: Set per-transaction caps, daily caps, recipient allowlists, and cooldowns at the infrastructure layer, not just in agent code. Infra-level policies survive prompt injection.
- Separation of duties: The agent issues payment intent; the infrastructure validates against policy; threshold signers produce the signature. No single component can move funds alone.
In more detail
The biggest mistake in AI agent security is trusting the agent to enforce its own limits. Agents run on LLMs, and LLMs can be manipulated — prompt injection, jailbreaks, bugs in tool-use logic. If your "spending limit" is a line in the system prompt, it is not a limit; it is a suggestion. Real security has to live below the agent, in infrastructure the agent cannot talk its way past.
That's why MoltPe enforces spending policies at the signing layer, not the application layer. When your agent requests a payment, the request is checked against policy before any signature is produced. If the payment exceeds the daily cap, violates the recipient allowlist, or breaks a cooldown window, the signing operation simply refuses — no signature means no on-chain transaction, no matter how persuasively the agent argues for it. Combined with Shamir key splitting (no single party holds a complete key), the practical attack surface gets very small.
Operationally, start tight. Give a new agent a small daily cap, a narrow recipient allowlist, and a short list of approved endpoints. Watch the logs for a week. Loosen policies only for flows you've verified. Log every payment attempt — including the ones the policy rejected — because rejected attempts are the highest-signal data you have about whether your agent is behaving as designed or drifting off-script.
Related questions
- Is MoltPe non-custodial?
- What happens if my AI agent gets prompt-injected?
- AI agent spending policy explained
- Blog: The AI agent spending policies guide
- Blog: MoltPe vs building your own AI payment stack
About MoltPe
MoltPe is AI-native payment infrastructure that gives AI agents isolated wallets with programmable spending policies for autonomous USDC stablecoin transactions. Live on Polygon PoS, Base, and Tempo.