Migration Diary: Rebuilding the Sandbox Contract Before You Cut Over an Agent Runtime
This story is from 2026-09-04. It is preserved in the archive; the latest stories are on the live feed.
The model swap is the easy part of an agent cutover, and the leftover environment contract is what actually fails. You can change providers overnight and still inherit a hosted runtime's silent assumptions about cwd, secrets, and tools. Those assumptions do not travel with your prompt templates, so…
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- 2026-09-04 06:46 · DEV Community — AI
Migration Diary: Rebuilding the Sandbox Contract Before You Cut Over an Agent Runtime
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