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A Coinbase AgentKit Action That Cannot Spend USDC by Default: 48 Tests and a Real 402

This story is from 2026-10-24. It is preserved in the archive; the latest stories are on the live feed.

An agent that can inspect a crypto API's payment quote and an agent that can authorize a payment are two different products. I wanted the first capability to work in Coinbase AgentKit without quietly granting the second. I built an original TypeScript ActionProvider for Blockchain IQ's paid market…

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  1. 2026-10-24 15:45 · DEV Community — AI
    A Coinbase AgentKit Action That Cannot Spend USDC by Default: 48 Tests and a Real 402

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