Agent harness 'extensibility' hits a wall: even Pi can't store history as Git notes
lil-dina · reddit · 2026-10-20
A Reddit thread argues agent harnesses are only 'extensible' at points their authors anticipated. A developer tried switching Pi — arguably the most hackable agent — from JSONL to Git notes for chat history, gave up, and concluded it would require forking; his write-up argues such tools should be written in Lisp. The thread invites stories about what Claude Code / Codex / OpenCode plugin APIs simply can't do.
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