What is cx-devassist?

A Checkmarx add-on that scans code and software dependencies for security vulnerabilities and suggests fixes.

Scanning changed code and dependencies, then reviewing or applying engine-backed fixes inside the coding workflow.

It finds security risks in code written by people or AI before they reach a commit or security-sensitive part of an application.

cx-devassist — Plugin by Checkmarx

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.

Claude Code

/plugin marketplace add Checkmarx/cx-agentic-ai

agentmods

npx agentmods add plugins/checkmarx/cx-agentic-ai/cx-devassist

Clone the repo

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

Made for: Claude Code.

Per session not measured What this adds to a session before it is invoked.

When invoked not measured Not applicable: nothing here is loaded into a session.

Security scan A 0 findings. Scan, not verified.

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/cx-devassist/.claude-plugin/plugin.json · 11 lines

What it actually says

{
  "name": "cx-devassist",
  "version": "1.0.1",
  "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",
  "keywords": ["security", "checkmarx", "cxone", "sast", "sca"]
}

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.

yesterday First seen · 11 lines scan A 05cf5ae3616a

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 2026-08-31.

Data and AI Security Writing and docs agent ai mcp mcp-server model-context-protocol oauth2

cx-devassist

Getting it into your agent

Grade A, and why

Nothing flagged

What it actually says

What this file has done since we first saw it

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