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Designing Permission Boundaries for Production AI Agents

AI disclosure: This article was prepared with AI assistance. The author reviewed and edited the technical content and remains responsible for its accuracy. AI agent permissions are often treated as a binary decision: The agent can use a tool The agent cannot use a tool That may be sufficient for a prototype. It is usually too coarse for a production workflow. Reading a customer record, drafting…

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Give your AI agent a budget before you give it a wallet

AI agents can now pay for APIs on their own with x402: the server answers "402 Payment Required", the agent signs a small USDC payment and tries again. No accounts, no API keys.

  • x402 enables AI agents to pay for APIs independently.
  • x402-seatbelt prevents budget overruns by setting USD limits.
  • Package integrates easily and offers emergency stop feature.

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