The short answer
APIs become agent-friendly when their contracts describe intent, permissions, idempotency, and recovery paths as clearly as successful responses.
Traditional APIs assume a developer is orchestrating every step. Agents introduce a new caller: software that must infer what to do next from the contract.
An agent needs to know whether an operation completed, is pending, or failed partially. That state is as important as the endpoint itself.
Idempotency keys, explicit permissions, and reversible actions give agents a safer operating envelope. Reliability starts in the API design.
A useful note, once a week
Make room for better signal.
About the author
Elena writes about technical systems and the humans who operate them.
More from Elena Park →
The winning agent products will not feel like chatbots. They will quietly turn intent into reliable work.
Memory is useful when it helps an agent make fewer repeated decisions without becoming impossible to inspect.
A narrow agent with a clear finish line can create more value than a general assistant with a long list of promises.
Keep the good stuff coming
One thoughtful note on AI, agents, and AGI. No noise.
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