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.
npx skills add Checkmarx/cx-agentic-ai --skill cx-devassist-ascagit clone --depth 1 https://github.com/Checkmarx/cx-agentic-aiWrote 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.
[](https://agentmods.dev/skills/checkmarx/cx-agentic-ai/cx-devassist-asca)<a href="https://agentmods.dev/skills/checkmarx/cx-agentic-ai/cx-devassist-asca"><img src="https://agentmods.dev/badge/skills/checkmarx/cx-agentic-ai/cx-devassist-asca/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.
<a href="https://agentmods.dev/skills/checkmarx/cx-agentic-ai/cx-devassist-asca"><img src="https://agentmods.dev/badge/skills/checkmarx/cx-agentic-ai/cx-devassist-asca.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00109 | $0.04100 |
| Opus 5 | $0.00055 | $0.02050 |
| Sonnet 5 | $0.00022 | $0.00820 |
| Haiku 4.5 | $0.00011 | $0.00410 |
Grade A, and why
cx-devassist-asca 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 8d ago.
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.
How it starts
The opening of the file, as written. The whole thing — 328 lines — stays where its author put it; the contents beside it link to each section on GitHub.
CX Security ASCA
Detects and remediates SAST vulnerabilities in source files using Checkmarx ASCA.
When to Use
This skill has two entry points:
- On-demand scan — User asks to scan a source code file for vulnerabilities (e.g., "scan this
file", "check app.py for security issues"). If the target is a dependency manifest/lockfile
(package.json, requirements.txt, go.mod, …), use
cx-devassist-scainstead. - Remediation — User asks to fix ASCA findings, the agent receives a hook deny on Write/StrReplace (
agent_message/CHECKMARX_HOOK_DENY), or ASCA findings are surfaced via the stop hook'sfollowup_message.
If ASCA findings are already present in context (hook deny
agent_message,CHECKMARX_HOOK_DENYblock, prior scan result, or stop-hook message), skip Flow 1 entirely and proceed directly to Flow 2. Do not retry the blocked write, paste code in chat, or use shell workarounds.
Routing — which Checkmarx capability to use
Pick by the target, and ask if it is ambiguous:
| The user wants to scan… | Use |
|---|---|
A source code file (.py, .js, .java, .go, .ts, …) for code vulnerabilities |
this skill (SAST/ASCA) |
| A dependency manifest / lockfile (package.json, requirements.txt, go.mod, pom.xml, …) | cx-devassist-sca (SCA/OSS) |
| An entire project / repository at cloud scale, or existing platform scan results | the Checkmarx MCP (Cx1 cloud) tools |
A bare "scan this file" refers to whatever file is in context: source code → this skill; a
manifest/lockfile → cx-devassist-sca. If it is unclear which, ask the user.
Prerequisites
- Checkmarx
cxCLI installed. On a first-install sessioncxis in the canonical store but not yet on the agent shell's PATH, so invoke it by its absolute path, written for the shell you are actually in — PowerShell needs the&call operator and$env:variables, cmd needs%VAR%, bash needs forward slashes. All four forms are in../cx-cli-setup/references/shells.md; the short version is:
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.
- 8d ago First seen · 328 lines · 109 tokens per session scan A 8de8c172789d
cx-devassist-asca is a skill published in the GitHub repository Checkmarx/cx-agentic-ai (0 stars, last pushed yesterday), licensed Apache-2.0. It adds 109 tokens to every session and 4,100 once invoked, about $0.0005 per session on Opus 5. 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.
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