What is a spending allowlist?
A spending allowlist is a list of specific wallet addresses or counterparty identifiers that an AI agent is permitted to pay. If an agent tries to send funds to any address not on the allowlist, the transaction is blocked at the infrastructure level — regardless of what instruction the agent received. MoltPe enforces spending allowlists as part of every agent wallet's spending policy, alongside daily caps, per-transaction caps, and cooldown periods. MoltPe is AI-native payment infrastructure that gives AI agents isolated wallets with programmable spending policies for autonomous USDC stablecoin transactions.
The short version
- Explicit recipients: Only addresses you preapprove can receive funds from the wallet. Everything else is rejected at signing time.
- Prompt-injection resistant: Even if an adversary feeds the agent a new recipient address, the wallet refuses the transaction.
- Combines with caps: Allowlists sit alongside per-transaction and per-day limits, so the agent is bounded on both who and how much.
In more detail
Address allowlisting is the cheapest, highest-signal control you can put on an autonomous agent's wallet. AI agents take instructions from many sources — user prompts, retrieved documents, tool outputs, other agents — and any of those inputs could attempt to redirect a payment. A trained attacker does not need the agent to make a huge mistake; they just need to slip a new recipient address into its context window. Without allowlisting, the agent has no structural reason to refuse.
With a MoltPe spending allowlist, the recipient check happens in the wallet policy, not in the agent's reasoning. When the agent calls the MoltPe send-payment API, the wallet evaluates the destination against the allowlist before signing. A missing destination yields an immediate, logged rejection. The agent cannot talk its way around it, because the agent is never the thing making the decision — the policy is.
The practical pattern for most developers is to seed the allowlist with the agent's expected counterparties when you create the wallet: your main LLM provider, a few search and data API vendors, maybe a cloud compute endpoint. Updates go through the same privileged channel you use to create wallets in the first place (an authenticated dashboard action or a server-to-server API call). Add a new vendor when you onboard one; otherwise leave the list alone.
Related questions
- AI agent spending policy explained
- What happens if my AI agent gets prompt-injected?
- Blog: AI agent spending policies guide
- How do I secure my AI agent wallet?
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.