AGENT ATLAS · TIER B

Codex

OpenAI's coding agent across terminal and other product surfaces; published snapshots keep official product behavior separate from the open-source CLI implementation.

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Codex

This page contains stable identity and snapshot navigation only. Codex has several product surfaces; the Registry separates CLI documentation, the open CLI core, and App Server into distinct snapshots instead of mixing desktop, IDE, cloud, and source observations into one claim boundary.

Current coverage: Tier B, partial.
Snapshots: CLI docs, CLI source, and App Server source.
Evidence: official documentation plus pinned source.
Covered: loop, tools, context compaction, execution policy, hooks/plugins, subagents, event model, and App Server.
Missing: a redacted native trace, formal experiment, observed OS-sandbox behavior, and external reproduction. The profile therefore remains Tier B.

IMMUTABLE OBSERVATIONS

Snapshots

Facts are bound to a date, surface, and version. New observations append rather than overwrite history.

current

codex-2026-08-10-cli

This is an official-documentation snapshot, not a pinned binary or source commit. Version-specific implementation claims remain intentionally unknown.

Observed: 2026-08-10
Surface: cli
Version: docs-observation
Claims: 1

Inspect snapshot →

current

codex-2026-08-10-source

Clean source inspection pinned to one public commit. The snapshot does not claim that every hosted Codex surface runs this exact revision, and it has not yet earned Tier A because no native experiment is attached.

Observed: 2026-08-10
Surface: cli
Version: source@89a335e
Claims: 7

Inspect snapshot →

current

codex-2026-08-10-app-server

Separate server-surface snapshot for the public App Server transport and JSON-RPC dispatch boundary; it is not evidence about a particular desktop or IDE client release.

Observed: 2026-08-10
Surface: server
Version: source@89a335e
Claims: 1

Inspect snapshot →