How to Choose an Agent Wallet: Eight Questions to Ask

An agent needs to buy $1 of data. Search for “agent wallet” and you may find packaged wallets, wallet APIs, signing services, card credentials and payment protocols. Each can participate, but solves a different problem.

Start with the task: whose money, what purchase, how much can be spent, who can revoke access, and what happens if the service fails? Then examine product claims.

Scope: This is a selection framework with hypothetical examples, not a payment or security test of any product. Official material was reviewed October 28, 2026; confirm fees, networks and availability at procurement.

Start with the task

Both routes can coexist in one product. Start with the merchant’s accepted path, then check wallet compatibility; supporting an asset does not mean the merchant accepts it.

1. Whose money is it, and who can move it?

Identify whether funds belong to an end user, enterprise or provider; then ask who can initiate, approve, recover or replace keys. “Non-custodial” is a claim to investigate, not a complete answer.

A trusted execution environment (TEE) isolates execution; multiparty computation (MPC) uses cryptographic collaboration among parties. These terms describe implementation approaches, not automatically who controls funds.

2. What may the agent do?

Check per-transaction and cumulative limits, expiry, recipients, allowed contract calls and approval. Ask whether restrictions are enforced in the prompt, application server, signing service or smart contract: each position has different threats.

With $10 daily and $3 per purchase, a transfer-only restriction may not cover other contract authorizations. Only the actual rules and tests can answer.

3. Which payment route is supported?

Break a provider’s network list down by operation: address creation, transfers, tokens, simulation and testnet support may differ.

4. What is the total cost?

Beyond the purchase price, ask who pays wallet, gas, funding, withdrawal, conversion spread, bridging and provider fees, and when. A $1 item plus a hypothetical $0.02 network fee costs the user $1.02; this is arithmetic, not a product quote. Compare total costs especially for frequent small payments.

5. How is it integrated and maintained?

First run a testnet or no-funds example, then investigate differences in production. Allow for enterprise verification, regional access and commercial agreements.

6. What happens if the service fails?

Record payment and delivery separately. On timeout, inspect the original transaction and order before retrying under the merchant’s idempotency mechanism; do not simply pay again. Check who initiates refunds, where assets return and how users are notified.

7. Can access really be revoked and recovered?

Test session expiry, cap changes, signer removal, account recovery and outages. Revocation normally constrains future actions; it should not be assumed to reverse a confirmed transaction. Ask how signed or pending requests are handled.

For example, Turnkey’s policy documentation explicitly describes Root Quorum bypass. Privy’s policy documentation describes default enclave enforcement but notes that some policies run at the API layer; the simulation needed for transfer-size restrictions currently runs outside the secure environment. Confirm the checks behind a specific cap with the provider. Reviewed October 30, 2026. These examples show why control points matter more than labels.

8. Compare candidates using the same experiment

When feasible, run the same tasks and keep evidence:

This is a test plan, not a result. Confirm environment, permissions, fees and funds risk first. Mark untestable items “unverified.”

Select on task completion, explainable boundaries, affordable costs, operational capacity and recovery. No wallet fits every use case.