Google puts an open-source Gemini agent in the terminal
Google planting an open-source agent in the terminal confirms the CLI as the contested surface for coding agents — and open-sources the control loop others keep proprietary.
Field Notes
Everything here was chosen and explained by a person: essays when there's an argument to make, notes when an observation is worth keeping. Every note says why it was clipped and attaches to the pattern it evidences.
Google planting an open-source agent in the terminal confirms the CLI as the contested surface for coding agents — and open-sources the control loop others keep proprietary.
Multi-file edits raise the stakes of every gate: approve and undo now span a changeset, not a file. Recovery patterns are about to matter more than approval ones.
watching → emerging → established
Seen across products but the shape is still settling. Adopt with an exit: expect the anatomy to shift.
3 documented sightings since Feb 2026 — every one traces to a dated source.
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