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Codex Security

An AI-powered application security agent by OpenAI (internally codenamed Aardvark) providing codebase threat modeling, sandbox validation, and patch generation.

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01OpenAI Open-Sources Codex Security CLI and SDK for Automated Vulnerability Discovery and PatchingOn July 28, 2026, OpenAI open-sourced the Codex Security CLI and TypeScript SDK on GitHub under the Apache-2.0 license. As an AI-powered application security agent (internally codenamed Aardvark), Codex Security goes beyond traditional SAST tools by constructing codebase threat models, validating vulnerabilities in isolated sandboxes, and generating remediation patches to streamline DevSecOps workflows.7/29/2026