Agent Skill
Vulnerability Triage Brocards skill
vulnerability-triage-brocardstrailofbits/skillsplugins/vulnerability-triage-brocards/skills/vulnerability-triage-brocards/SKILL.md
This skill should be used when the user asks to "triage a vulnerability report", "assess a CVE", "evaluate a bug bounty submission", "decide if a finding is valid", "review a security finding", "dismiss a vulnerability", "should we fix this CVE", "prioritize a vulnerability report", or needs to determine whether an incoming vulnerability report warrants investigation. Applies 7 brocards (rules of thumb) to systematically accept, dismiss, or request more information on vulnerability reports, or needs to filter raw findings from agentic vulnerability discovery pipelines before human review.
always on
127 tokname + description
once used
1,823 tokSKILL.md body
bundled files
111 KB
repo stars
7.7kGitHub
Install the Vulnerability Triage Brocards skill
Skills CLI (Claude Code, Codex, Cursor and others)
npx skills add https://github.com/trailofbits/skills --skill vulnerability-triage-brocards
Claude Code, by hand (all projects)
git clone --depth 1 https://github.com/trailofbits/skills.git /tmp/skills mkdir -p ~/.claude/skills cp -R /tmp/skills/plugins/vulnerability-triage-brocards/skills/vulnerability-triage-brocards ~/.claude/skills/vulnerability-triage-brocards
For one project only, copy the folder into .claude/skills/ in that project instead. The agent picks it up when a task matches its description.
What it costs your context
Agent Skills load in three steps. Tokens counted with the o200k tokenizer; your model's count will differ a little.
| When | What loads | Cost |
|---|---|---|
| Every session | Name and description | 127 tok |
| When the agent uses it | The SKILL.md instructions | 1,823 tok |
| Only if opened | 1 bundled files (11 KB) | varies |
Until it is used, vulnerability-triage-brocards costs about 11× less than the median MCP server we measured (1,362 tokens on every turn). Installing all 97 skills from trailofbits/skills would load 7,555 tokens of descriptions. Skills vs MCP study
Checks
Our checks found nothing to flag: it follows the Agent Skills specification's naming and size guidelines and doesn't pipe downloads into a shell.
Checked 2026-10-22 · method
What's inside
The headings of its SKILL.md. Read the full file on GitHub.
- Vulnerability Triage Brocards
- When to Use
- When NOT to Use
- Pipeline Position
- Triage Workflow
- Brocard 1: No Vulnerability Without a Threat Model
- Brocard 2: No Exploit from the Heavens
- Brocard 3: No Vulnerability Outside of Usage
- Brocard 4: No Vulnerability from Standard Behavior
- Brocard 5: No Vulnerability from Documented Behavior
- Brocard 6: No Cure Worse Than the Disease
- Brocard 7: The Report Is Neither Necessary nor Sufficient
- Output Format
- Rationalizations to Reject
- Wrongly Dismissing Valid Findings
- Wrongly Accepting Invalid Findings
- Detailed References
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