CDX-REQ-001: Unknown Codex requirements.toml Key - Codex CLI

Summary

• Rule ID: CDX-REQ-001
• Severity: MEDIUM
• Category: Codex CLI
• Normative Level: SHOULD
• Auto-Fix: No
• Verified On: 2026-07-30

Applicability

• Tool: codex
• Version Range: >=0.133.0
• Spec Revision: unspecified

Evidence Sources

• https://github.com/openai/codex/blob/rust-v0.146.0/codex-rs/config/src/config_requirements.rs
• https://github.com/openai/codex/blob/rust-v0.146.0/docs/config.md

Test Coverage Metadata

• Unit tests: true
• Fixture tests: false
• E2E tests: false

Examples

The following examples demonstrate what triggers this rule and how to fix it.

Invalid

allowed_sandbox_mode = ["read-only"]

Valid

allowed_sandbox_modes = ["read-only"]
[windows]
allowed_sandbox_implementations = ["elevated", "unelevated"]