scanner-tuning

scanner-tuning is a skill for Claude Code from UnitOneAI/SecuritySkills. It costs 74 tokens per session (6,353 once invoked), scanned B, original, MIT.

Guidance for configuring vulnerability scanners, which check systems for security weaknesses. It covers scan settings, false positives, login-based versus unauthenticated checks, severity ratings, and performance.

In plain words
What is it for?
Use it to tune scan policies, assess authenticated scanning, choose checks, document severity changes, compare scanners, and optimize scan schedules.
Why use it?
It helps make scanner results more accurate and useful when reports contain too many incorrect findings, inconsistent risk ratings, or take too long to run.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter.

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.

agentmods
npx agentmods add skills/unitoneai/securityskills/scanner-tuning
Any agent
npx skills add UnitOneAI/SecuritySkills --skill scanner-tuning
Clone the repo
git clone --depth 1 https://github.com/UnitOneAI/SecuritySkills

Made for: Claude Code.

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 scanner-tuning

README.md
[![agentmods](https://agentmods.dev/badge/skills/unitoneai/securityskills/scanner-tuning.svg)](https://agentmods.dev/skills/unitoneai/securityskills/scanner-tuning)
Your own site
<a href="https://agentmods.dev/skills/unitoneai/securityskills/scanner-tuning"><img src="https://agentmods.dev/badge/skills/unitoneai/securityskills/scanner-tuning.svg" alt="Measured on agentmods" height="20"></a>
Per session 74 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 6,353 The whole file, excluding the scripts and references it only reads on demand.
Security scan B 1 finding. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00074 $0.06353
Opus 5 $0.00037 $0.03177
Sonnet 5 $0.00015 $0.01271
Haiku 4.5 $0.00007 $0.00635

Measured 6d ago against content hash 389d96d78413, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade B, and why

scanner-tuning scanned grade B with 1 finding 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 6d 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.

Asks for rootmediumPrivilege escalation

A mod that escalates privileges can change anything on the machine, not only the project.

- Linux Auth: [SSH key (preferred) | SSH password with sudo | root | N/A]
skills/vuln-management/scanner-tuning/SKILL.md · 442 lines

How it starts

The opening of the file, as written. The whole thing — 442 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Vulnerability Scanner Tuning -- CVSS 4.0 / CWE

Frameworks: CVSS 4.0 (FIRST.org), CWE (MITRE) Role: Security Engineer Time: 30-60 min Output: Tuned scan policy configuration, false positive analysis, severity override documentation, and cross-scanner correlation report


When to Use

If a target is provided via arguments, focus the review on: $ARGUMENTS

Use this skill when vulnerability scan results contain excessive false positives, when configuring or reconfiguring scan policies for new environments, when evaluating whether to use authenticated vs unauthenticated scanning, when scanner severity ratings do not align with actual risk, when onboarding a new scanner or comparing results across multiple scanners, or when scan performance (duration, resource consumption) needs optimization.

Do not use when: The task is triaging specific CVEs from scan output (use cve-triage), prioritizing patches from a remediation backlog (use patch-prioritization), or analyzing software composition (use sbom-analysis).


Context the Agent Needs

Before starting, collect or confirm:

  • Scanner platform(s): Which scanner(s) are in use? (Qualys VMDR, Tenable Nessus/IO/SC, Rapid7 InsightVM/Nexpose, OpenVAS/Greenbone, Snyk, Trivy, Grype, Nuclei)
  • Current scan policies: Existing scan policy names, configurations, and plugin/check selections
  • Scan scope: Target IP ranges, hostnames, applications, containers, or cloud accounts
  • Authentication status: Are scans currently authenticated (credentialed) or unauthenticated?
  • False positive examples: Specific findings suspected or confirmed as false positives, with evidence
  • Scan frequency: Current scan schedule and any performance constraints
  • Result volume: Approximate number of findings per scan cycle and false positive rate if known
  • Compliance requirements: Whether scans must meet specific compliance mandates (PCI ASV, DISA STIG, CIS Benchmark)
  • Multi-scanner context: If using multiple scanners, which ones and how results are currently correlated

Read the full file on GitHub · 442 lines

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. 6d ago First seen · 442 lines · 74 tokens per session scan B 389d96d78413

Subscribe to this mod's changes

scanner-tuning is a skill published in the GitHub repository UnitOneAI/SecuritySkills (59 stars, last pushed 2mo ago), licensed MIT. It adds 74 tokens to every session and 6,353 once invoked, about $0.0004 per session on Opus 5. A static security scan graded it B with 1 finding (asks for root). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.