Giving an AI agent a wallet without giving it your keys

<p>Agents are starting to pay for things. An agent buying API credits, renting a GPU for an hour or paying for a dataset is no longer a thought experiment, and x402 (HTTP <code>402 Payment Required</code> with on-chain payment) makes it a normal web request.</p> <p>That leaves the question of how the agent holds money.</p> <h2> The two bad options </h2> <p><strong>Give the agent a private key.</st

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