cx-devassist

cx-devassist is a plugin for Cursor from Checkmarx/cx-agentic-ai. Its manifest loads nothing; the 4 skills it bundles cost 331 tokens per session together, scanned A, original, Apache-2.0.

A security scanner for code and third-party packages, including code generated by AI. It finds vulnerabilities and risky dependencies and suggests fixes inside the editor.

In plain words
What is it for?
Use it after changing code, before committing, and when working on security-sensitive features. It can scan code and dependencies and apply suggested fixes.
Why use it?
It helps catch security problems while you are writing code, rather than after they reach a commit or release. Inline fixes reduce the need to switch to a separate security tool.

Plugin for Cursor

Written for Cursor: a Cursor plugin manifest.

Good fit Use it after changing code, before committing, and when working on security-sensitive features. It can scan code and dependencies and apply suggested fixes.

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Install with agentmods
npx agentmods add plugins/checkmarx/cx-agentic-ai/cursor-devassist
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Clone the repo
git clone --depth 1 https://github.com/Checkmarx/cx-agentic-ai

Made for: Cursor.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for cx-devassist

README.md
[![agentmods](https://agentmods.dev/badge/plugins/checkmarx/cx-agentic-ai/cursor-devassist/github.svg)](https://agentmods.dev/plugins/checkmarx/cx-agentic-ai/cursor-devassist)
Your own site
<a href="https://agentmods.dev/plugins/checkmarx/cx-agentic-ai/cursor-devassist"><img src="https://agentmods.dev/badge/plugins/checkmarx/cx-agentic-ai/cursor-devassist/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for cx-devassist

Your own site · 80×15
<a href="https://agentmods.dev/plugins/checkmarx/cx-agentic-ai/cursor-devassist"><img src="https://agentmods.dev/badge/plugins/checkmarx/cx-agentic-ai/cursor-devassist.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session not measured What this adds to a session before it is invoked.
When invoked not measured The manifest loads nothing itself; its 4 skills cost 331 tokens a session between them.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Security

Grade A, and why

cx-devassist scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured yesterday.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

plugins/cursor-devassist/.cursor-plugin/plugin.json · 17 lines

What it actually says

{
  "name": "cx-devassist",
  "displayName": "Checkmarx DevAssist for Cursor",
  "version": "1.0.0",
  "description": "Checkmarx-powered security scanning and fixing inside your coding loop. Checks the code you write and the code AI generates for vulnerabilities and risky dependencies, then returns precise, engine-backed fixes. Best invoked after writing or changing code, before commits, and around security-sensitive logic. Applies fixes inline so you can accept them without leaving your editor.",
  "author": {
    "name": "Checkmarx"
  },
  "license": "Apache-2.0",
  "logo": "assets/logo.png",
  "keywords": ["security", "checkmarx", "cxone", "sast", "sca", "cursor"],
  "hooks": "./hooks/hooks.json",
  "mcpServers": "./mcp.json",
  "skills": "./skills/",
  "rules": "./rules/"
}
Contents

What it installs

The manifest is a name and a version. 4 skills travel with it, and installing the plugin installs all of them — 331 tokens a session between them. Each is measured on its own page, and each can be installed alone.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. yesterday First seen · 17 lines scan A 496e94e02d34

Subscribe to this mod's changes

cx-devassist is a plugin published in the GitHub repository Checkmarx/cx-agentic-ai (0 stars, last pushed yesterday), licensed Apache-2.0. Its token cost is not measured: this kind of file is read by the harness, not the model. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-08.

Related

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