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 checkmarx-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/checkmarx-devassist-asca)<a href="https://agentmods.dev/skills/checkmarx/cx-agentic-ai/checkmarx-devassist-asca"><img src="https://agentmods.dev/badge/skills/checkmarx/cx-agentic-ai/checkmarx-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/checkmarx-devassist-asca"><img src="https://agentmods.dev/badge/skills/checkmarx/cx-agentic-ai/checkmarx-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 | $0.00120 | $0.02573 |
| Opus 5 | $0.00060 | $0.01287 |
| Sonnet 5 | $0.00024 | $0.00515 |
| Haiku 4.5 | $0.00012 | $0.00257 |
Grade A, and why
checkmarx-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 9d 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 — 234 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
checkmarx-devassist-scainstead. - Remediation — User asks to fix ASCA findings, or GitHub Copilot CLI (copilot-agent) needs to fix SAST vulnerabilities detected by ASCA
If ASCA findings are already present in context (e.g., provided by a hook block or a prior scan result), skip Flow 1 entirely and proceed directly to Flow 2 using those findings. Do not re-run the scan.
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, …) | checkmarx-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 → checkmarx-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 —"$LOCALAPPDATA/Checkmarx/cx/cx.exe"on Windows,"$HOME/.checkmarx/bin/cx"on Unix (these env vars are available in the agent's shell) — and fall back to a barecxonly when it is already on PATH. - Checkmarx MCP server connected (required for remediation)
Remediation is MCP-only. Every fix MUST come from
mcp__Checkmarx__codeRemediation. If that tool is not available, you MUST NOT remediate by any other means — no manual edits, no generic or LLM-generated fixes, and do not apply theremediationAdvisetext yourself. Stop and recover the MCP first (see Flow 2 → Step 2, "If the tool is not available").
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.
- 9d ago First seen · 234 lines · 120 tokens per session scan A 9f38fdf1f9df
checkmarx-devassist-asca is a skill published in the GitHub repository Checkmarx/cx-agentic-ai (0 stars, last pushed 2d ago), licensed Apache-2.0. It adds 120 tokens to every session and 2,573 once invoked, about $0.0006 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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