Building an AI Agent From Scratch: 300 Lines, One Loop, No Framework
This story is from 2026-10-30. It is preserved in the archive; the latest stories are on the live feed.
Every agent framework I tried in 2023 solved a problem I did not have yet, and hid the problem I did have: the loop. So I built the last three agents without one. Parse, call a tool, check the result, decide again. A while loop with a step budget, a state object, and a tool registry. The first vers…
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- 2026-10-30 16:05 · DEV Community — AI
Building an AI Agent From Scratch: 300 Lines, One Loop, No Framework