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AgentCard: An Agent Wallet Authorized by an NFC Card
An Expo app where an AI agent turns a text request into a concrete crypto task, and you authorize it by tapping a hardware NFC card that holds the key.
process.log7 fields
toolsClaude Code
iterationsMany attempts
about 45 commits on the engine, the wallet screens, and motion and device QA
time4.20
%_ai100
me 0
ai 100
self-reported · generously rounded
# how_it_was_made
AgentCard is for people who want an AI agent to act on their wallet without giving it the key. I set the design: the agent prepares a plan, I review the exact payload, and a tap on the card authorizes it. Claude Code wrote most of the app and the task engine, which runs any EVM contract call, transfer or signature through one generic path instead of per-protocol handlers. I made the calls on the security boundaries and the review step, and I checked the behavior on a real phone with the card.
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ask how it was made — the dead-ends are usually the good part