jxnl.co
- title
- jxnl.co
- type
- entity
- summary
- Jason Liu's writing — instructor library author, AI agent workflows, structured output, RAG, knowledge work with coding agents
- tags
- blog, ai-agents, python
- created
- 2026-05-21
- updated
- 2026-05-21
Jason Liu's blog at jxnl.co. Jason is the author of Instructor — the Python library that pioneered Pydantic-based structured-output prompting before frontier providers added their own — and writes about AI agent workflows, structured output engineering, RAG productization, and (recently) using Codex and Claude Code for knowledge work, not just code.
The tone is operator-flavored: long pieces that describe how he actually uses tools day-to-day rather than benchmark posts or speculation. Pieces tend to coin reusable names for patterns — "compaction" for thread compression, "heartbeats" for self-scheduled checks, "steering" for mid-task message injection.
Ingested articles
- jxnl-codex-maxxing (2026-05-10) — Codex-maxxing: the operating loop with durable threads, voice, steering, memory-as-files, Heartbeats, Goals, and the side panel
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