Are You Still the Agent I Authorized? Earned Authority under a Fixed Ceiling for Evolving Agents

Abstract

Long-lived AI agents increasingly evolve after deployment by retaining experience, acquiring skills and tools, revising workflows, delegating work, and moving across task phases. This improves adaptation but creates a distinct authorization problem. Tool-enabled agents can turn model errors and prompt injections into consequential external actions; when evolution occurs under a live grant, the subject exercising that authority or the context in which it acts may no longer match what the user eva

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@misc{zhang2026are,
  title = {{Are You Still the Agent I Authorized? Earned Authority under a Fixed Ceiling for Evolving Agents}},
  author = {Zhaoxi Zhang and Xiaomei Zhang},
  year = {2026},
  month = jul,
  eprint = {2607.23586},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2607.23586}
}