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trailmark-variant-neighborhood

100 / 100 · Low risk

Fine to try.

By trailofbits/skills (GitHub) · security · 8,130 stars · scanned at commit e4dd0bb

Expands one confirmed or suspected vulnerability into a Trailmark graph neighborhood of variant candidates by finding sibling functions, shared callers and callees, common sensitive sinks, common entrypoint paths, interface implementations, override relationships, type/reference neighbors, and structurally similar nodes. Use after one issue is found to seed variant-analysis, semgrep-rule-creator, static-analysis, or manual review with graph-derived candidate locations.

Works with any agent that supports SKILL.md skills.

What this skill can do

We found nothing in the files we read that matches our rules. That does not prove the skill is safe: see the limits of static scanning.

Install

Paste this into your terminal. It downloads exactly the version we scanned, not whatever is newest.

if [ -e ~/.agents/skills/'trailmark-variant-neighborhood' ] || [ -L ~/.agents/skills/'trailmark-variant-neighborhood' ]; then echo 'A skill folder named trailmark-variant-neighborhood already exists — not replacing it' >&2; false; else d=$(mktemp -d) && git clone --quiet --filter=blob:none --no-checkout 'https://github.com/trailofbits/skills' "$d" && git -C "$d" checkout --quiet 'e4dd0bb5b15535f7c5a0834187dffba6ac37e4ff' -- 'plugins/trailmark/skills/trailmark-variant-neighborhood' && mkdir -p ~/.agents/skills && cp -R "$d"/'plugins/trailmark/skills/trailmark-variant-neighborhood' ~/.agents/skills/'trailmark-variant-neighborhood' && rm -rf "$d"; fi

Codex reads ~/.agents/skills directly. For Claude Code, Cursor, Copilot, Gemini CLI, Antigravity or OpenCode, also link it. For Claude Code: ln -s ~/.agents/skills/'trailmark-variant-neighborhood' ~/.claude/skills/'trailmark-variant-neighborhood' (other agents: ~/.cursor/skills, ~/.copilot/skills, ~/.gemini/skills, ~/.gemini/config/skills, ~/.config/opencode/skills). Or install through the finder skill, which does both.

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