March 18, 2026 / Daily Edition / 1 story in this issue
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Subagents Grow Up: Gemini Isolates Tool Boundaries While Codex Shares Trust by Default

Two agent platforms shipped subagent changes within hours of each other. One tightened what a child agent can see and use . The other tightened what a child agent can teach the rest of the system to trust . Same category. Very different instinct.

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Evidence: 5 source signals / March 18, 2026 / Daily Edition
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Agent Atlas

How AI Agents Work

The long-form map behind the daily paper: context, tools, loops, memory, delegation, safety, interface, and trust.

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