Validation: purpose and common use cases
Validation is cataloged from the official OpenAI Plugins repository as a skill bundled with the codex-security plugin. Artifiner verified its source at plugins/codex-security/skills/validation/SKILL.md against repository revision 1e285826e604; the page is classified under Security and Testing from source-backed metadata rather than generated ratings or reviews.
Where Validation fits in an agent workflow
Validation is a Codex skill for security workflows. Validation's role is practical rather than generic: it gives an agent task-specific instructions for identifying and validating software risk. In the catalog it is discoverable around security validation, findings, and vulnerability validation, which are useful starting points when the user knows the outcome they need but not the exact capability name. Validation is bundled with the codex-security plugin, so it should be understood as one capability inside that broader integration rather than as a separate application.
What to check before using Validation
Use Validation when the job maps to security review, validation and defensive engineering. For Validation, a sensible workflow is to start with the task, check that the skill matches the project and tools involved, and then follow the upstream instructions rather than treating the directory description as executable documentation. Artifiner keeps the Validation source link visible so you can inspect its current SKILL.md before relying on behavior that may change as the repository evolves.
Validate candidate security findings with the strongest practical evidence available, using targeted reproduction, tests, tracing, or focused static assessment.