Source record

Published by arXiv cs.MA (T1 source). The original is at https://arxiv.org/abs/2609.00006.

Pipeline notes

The summary and note below are generated by the signal pipeline — they are Beyond Desk’s reading, not quotations from the source.

A source-code anatomy of eleven production coding agent harnesses (Claude Code, Codex CLI, Gemini CLI, Aider, OpenHands, etc.), mapping seven canonical subsystems with minimal and maximal implementations, cataloging 29 recurring design patterns, and including a longitudinal sample showing convergence over one quarter. Closes with 18 design recommendations and a minimum-viable-harness scaffold.

First systematic source-code dissection of major coding agents across ~4M LOC, yielding concrete patterns and a 90-line scaffold readers can actually build from.

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