Codex Security

Codex Security helps you find, investigate, and fix vulnerabilities in your code. Use its security workflows in Codex, or automate them with the @openai/codex-security CLI and TypeScript SDK.

• In Codex: choose a security workflow.
• In a terminal: install the CLI and scan your repository.
• In automation: use the TypeScript SDK or GitHub Action.

Features

• Scan repositories, selected paths, or Git changes. Deep scans repeat Standard scans and return their deduplicated findings.
• Validate candidate findings, generate patches, and verify existing fixes.
• Draft SECURITY.md policies and save threat models for later review.
• Browse saved scans and findings, identify duplicates, assess severity against your own rubric, and suggest owners from source and Git history.
• Preview third-party scanner findings, save them locally, or publish supported reports to Codex Security Cloud. Scanner import guides.
• Track findings in Linear, Jira, or GitHub, publish completed scans, or export SARIF, JSON, and CSV. Integration workflows.
• Automate scans across repositories or project components, including in CI and containers.

Use in Codex

Open your repository in a Codex session with the Codex Security plugin enabled, then ask:

Run a Codex Security scan on this repository, focusing on authentication and authorization. Return the saved report, source evidence, and coverage limits.

A completed scan saves a report and findings. Read the report for source evidence and exclusions, then request a patch or ask Codex to verify an existing fix. See the agent workflow guide for setup, task selection, and recovery.

Quick start

Requires Node.js 22.13.0+ within 22.x, or Node.js 24.x or 26.x, and Python 3.10+. Python 3.10 also requires tomli.

Install the CLI globally and sign in:

npm install --global @openai/codex-security
cs login

Run your first scan from the repository directory:

cs scan .

When the scan completes, open the Markdown file at the REPORT path in the terminal. Run cs scans show from the same repository to find its latest completed scan again. See scan scope and follow-up work for how to interpret exclusions in the report.

cs and codex-security run the same CLI. If the short name conflicts with another command, use codex-security. To skip the global install, or if npm reports an EEXIST conflict, use npx @openai/codex-security in place of cs for both login and scanning.

For CI, set OPENAI_API_KEY or CODEX_API_KEY in the scan process's environment. For a headless machine, see device or SSH login.

Scan options

Choose a scope and scan mode:

# Scan selected paths.
cs scan . --path src --path tests

# Scan committed changes from a base revision to HEAD.
cs scan . --diff origin/main

# Run a deep scan of the repository.
cs scan . --mode deep

Use cs scan . --max-time 15 for an advisory 15-minute Standard investigation allowance. See investigation time for timing semantics and Deep Scan limits.

Use cs --help to browse commands, or cs scan --help for scan options, cost limits, and patching after a scan.

For an application spread across repositories, see review one system across repositories. Use bulk scans for independent repository reviews in one resumable campaign.

Scans use existing root and component SECURITY.md guidance. To write or revise it, see Generate SECURITY.md.

Some cybersecurity requests and protected findings require Trusted Access for Cyber. For accounts with Daybreak access, see Daybreak opt-in for the Codex toggle and Cyber access programs to select a program explicitly.

TypeScript SDK

Install the package locally in your TypeScript project:

npm install @openai/codex-security

Then import it:

import { CodexSecurity } from "@openai/codex-security";

const security = new CodexSecurity();

try {
  const result = await security.run("/path/to/repository");
  console.log(result.reportPath);
} finally {
  await security.close();
}

The SDK guide includes deep-scan configuration, validation, severity classification, owner suggestions, and result handling.

Read existing Cloud findings

When Codex Security Cloud is available to your account, the Security plugin's $cloud-findings skill can read findings, reports, recorded assignment and verification, and scan status in Codex desktop or the Codex CLI. Cloud is an optional connection; local scans work without it.

See Cloud connection setup and CLI reads for authentication requirements and a read-only example.

Generate SECURITY.md

Use policy to draft a new SECURITY.md or update an existing one. Use --path to select a component:

cs policy .
cs policy . --path services/api --knowledge-base architecture.md

The command saves its draft outside the repository and leaves existing files unchanged. Review the diff and notes, edit the draft, then copy only SECURITY.md to the displayed Policy target. Keep the saved architecture and threat-model documents outside the repository.

Scans already use root and component SECURITY.md files. Keep your current policy if it needs no changes. When updating it, preserve its vulnerability-reporting instructions. If the command says the policy is already up to date, no copy is needed.

Files at .github/SECURITY.md or docs/SECURITY.md often contain reporting instructions. Preserve them when drafting a policy; those locations do not automatically provide repository-wide scan guidance. See the policy guide for policy locations, unanswered questions, saved artifacts, and SDK usage.

Save and export threat models

Scans and policy generation save threat models with their results. Export a saved model without starting another analysis:

cs export --scan SCAN_ID --artifact threat-model --output threatmodel.md

Omit --scan to use the current repository's latest completed scan. The export guide also covers findings, SARIF output for CI, and the offline TypeScript API. For ServiceNow Application Vulnerability Response, see Export findings for ServiceNow.

GitHub Actions

To run a weekly repository scan on GitHub-hosted Ubuntu: