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Source record · 2026

Custom instructions with AGENTS.md

OpenAI

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Type
Official product documentation
Publication
ChatGPT Learn
Version used
Documentation accessed 24 October 2026
Source date
24 October 2026
Recorded in Atlas
24 October 2026
License
Atlas paraphrase; no source figure reproduced.

Access date used for this evolving documentation; original publication date not established. No separate validity period has been established for the finding.

How Atlas uses this source

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How Codex discovers guidance

AGENTS.md is discovered by Codex. TASK, CHECKS and STATE are explicitly referenced conventions, not magic filenames.

Open the source passage
Supports this claim:Keep instructions specific to the work