Trail of Bits Skills Marketplace is a collection of Claude Code plugins, skills, agents, commands, and instructions for security analysis, vulnerability detection, code auditing, and development workflows. It is for developers and security researchers using AI-assisted tools to inspect software, smart contracts, CI workflows, and related artifacts. The catalogue entries are examples of the marketplace’s reusable agent extensions.
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.
git clone --depth 1 https://github.com/trailofbits/skillsWrote 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/plugins/trailofbits/skills/open-sourcing)<a href="https://agentmods.dev/plugins/trailofbits/skills/open-sourcing"><img src="https://agentmods.dev/badge/plugins/trailofbits/skills/open-sourcing.svg" alt="Measured on agentmods" height="20"></a>Grade A, and why
open-sourcing 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 4d 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.
The source is not reproduced here
Licensed CC-BY-SA-4.0
The repository is licensed CC-BY-SA-4.0, which this catalogue does not treat as permission to reproduce the file. Read it at the source.
What it installs
The manifest is a name and a version. 1 skill travel with it, and installing the plugin installs all of them — 82 tokens a session between them. Each is measured on its own page, and each can be installed alone.
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.
- 4d ago First seen · 11 lines scan A cc41145dc517
open-sourcing is a plugin published in the GitHub repository trailofbits/skills (6,988 stars, last pushed 4d ago), licensed CC-BY-SA-4.0. Its token cost is not measured: this kind of file is read by the harness, not the model. 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 2026-09-03.
Other plugins, from other repositories
atlas-publish
Takes the open PRs of the Atlas/Bella monorepo to a registered draft release on either the over-the-air or the App Store lane, classifying between them from the expo-updates native fingerprint rather than from intent — ios.buildNumber sits inside that fingerprint, so a buildNumber bump alone forces a store release.…
charon
Ferries a GitHub PR to merge without waiting forever: an honest snapshot-not-block loop that fixes CI, repairs conflicts, version-checks reviewer suggestions, and never says 'just wait'.
beecount-release
A release workflow for BeeCount projects that coordinates version tags, change logs, website updates and video copy across two code repositories. A release is the process of publishing a new software version.
ooda-loop marketplace
Plugin marketplace listing 1 plugin: ooda-loop.
utility-tools
Developer productivity tools for Claude Code — generate McKinsey-style HTML slide decks from marketing strategies, automate software releases with version bumping, changelog generation, git tagging, and GitHub release publishing. 3 skills for teams shipping fast.
essentials
Essential shipping workflow — group a dirty working tree into clean commits, push the branch, and open a senior-engineer-quality GitHub PR with auto-applied labels and "might address #X" issue links.