Source: https://seerepo.com/compare/morluto/rea/vs/openai/codex-security
Markdown source: https://seerepo.com/compare/morluto/rea/vs/openai/codex-security.md
Description: rea and codex-security share 5 technologies: MCP, yaml, saxes, Zod, and Ajv. Both are written in TypeScript.

# rea vs codex-security

rea and codex-security share 5 technologies: MCP, yaml, saxes, Zod, and Ajv. Both are written in TypeScript.

- [morluto/rea](https://seerepo.com/r/morluto/rea): Reverse engineer anything with agents, from app behavior down to native binaries.
- [openai/codex-security](https://seerepo.com/r/openai/codex-security): OpenAI's Codex Security CLI and TypeScript SDK for finding, validating, and fixing security vulnerabilities. npm: https://www.npmjs.com/package/@openai/codex-security

## What they share and what sets them apart

- In common: MCP, yaml, saxes, Zod, Ajv
- Only in rea: @clack/prompts, xterm, cairosvg, markdownify, @xmldom/xmldom, plist, parse5, ajv-formats, har-schema, pino
- Only in codex-security: React, Linear, GitHub, rfc3339-validator, rfc3986-validator, @openai/codex-sdk, ink, Inquirer, js-tiktoken, papaparse, pdfjs-dist

## Side by side

| | rea | codex-security |
|---|---|---|
| Size | 2,021,828 lines written, 2,855 code files | 568,957 lines written, 393 code files |
| Who writes it | 16.6% of its commits signed by AI. With Claude Code, Cursor, Codex, Factory, GitHub Copilot, and Devin | 2.1% of its commits signed by AI. With Codex, Claude Code, Cursor, and GitHub Copilot |
| Activity | Last push November 11, 2026, 6,868 commits, 452,626 stars | Last push November 12, 2026, 2,044 commits, 11,854 stars |
| Tests | 4,073 test files. 67% of its code files have a test that imports them | 611 test files. 71% of its code files have a test that imports them |

- Size: Lines written by people and agents, without generated ones; code files, without tests.
- Who writes it: A commit counts as AI's when it carries its signature: a Co-Authored-By line, its author name or the merge of its branch.
- Activity: From GitHub and its history, on the day SeeRepo read it.
- Tests: The files that test the code, and the share of code files a test imports.

## Frequently asked questions

### Which is bigger, rea or codex-security?

rea, with 2,021,828 lines written; codex-security has 568,957.

The proof: [morluto/rea's code at commit 4505477](https://github.com/morluto/rea/tree/4505477903cf502310c68cd63ea4c9ef576a541a)

### Which has more GitHub stars, rea or codex-security?

rea, with 452,626 stars; codex-security has 11,854.

The proof: [morluto/rea on GitHub](https://github.com/morluto/rea)

### Which has more tests, rea or codex-security?

rea, with 4,073 test files; codex-security has 611.

The proof: [morluto/rea's code at commit 4505477](https://github.com/morluto/rea/tree/4505477903cf502310c68cd63ea4c9ef576a541a)

### Which was updated more recently, rea or codex-security?

codex-security: its last push was on November 12, 2026, and rea's on November 11, 2026.

The proof: [openai/codex-security's commits on GitHub](https://github.com/openai/codex-security/commits)

### Which has more commits signed by AI, rea or codex-security?

rea: an AI signed 16.6% of its commits, with Claude Code, Cursor, Codex, Factory, GitHub Copilot, and Devin; in codex-security, 2.1%.

The proof: [the commits each tool signed in morluto/rea](https://seerepo.com/r/morluto/rea/ai)

## Sources

- morluto/rea: Read on November 11, 2026, at commit 4505477 (https://github.com/morluto/rea/tree/4505477903cf502310c68cd63ea4c9ef576a541a)
- openai/codex-security: Read on November 12, 2026, at commit 2911786 (https://github.com/openai/codex-security/tree/2911786f243f08fd61ad854f5c527e7b0c404ccc)

## What is your repo built with?

Any public repo, with no account: https://seerepo.com/r/owner/repo/built, with the owner and name it has on GitHub.