trailofbits/skillsGit

Software security review

Inspect software for vulnerabilities through security review and code analysis.

Before you start

Inputs: Codebase, technical environment and acceptance criteria

  1. Check the original documentation for supported AI tools, models and runtime dependencies.
  2. Open the repository and follow the author’s installation instructions. Model APIs or external services may require separate accounts.
  3. Try your own material, then review the facts, layout and output files.
Read the original installation guide ↗

License: CC-BY-SA-4.0

Source snapshot: 2026-09-15. README ↗

Original license & copyright
Attribution-ShareAlike 4.0 International

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Try a task like this

Use Software security review with my own source material. Confirm the required inputs and available tools, then produce an editable result.

Trail of Bits Skills Marketplace

A Claude Code plugin marketplace from Trail of Bits providing skills to enhance AI-assisted security analysis, testing, and development workflows. Codex can load this marketplace through its Claude marketplace compatibility.

Also see: claude-code-config · codex-config · skills-curated · claude-code-devcontainer · dropkit · coop

Installation

Claude Code Marketplace

/plugin marketplace add trailofbits/skills

Browse and Install Plugins

/plugin menu

Codex

Codex supports Claude plugin marketplaces directly, so this repository does not need Codex-specific sidecar metadata.

Install the marketplace with:

codex plugin marketplace add trailofbits/skills
codex plugin list
codex plugin add <plugin-name>@trailofbits

Local Development

To add the marketplace locally (e.g., for testing or development), navigate to the parent directory of this repository:

cd /path/to/parent  # e.g., if repo is at ~/projects/skills, be in ~/projects
/plugins marketplace add ./skills

Available Plugins

Smart Contract Security

PluginDescription
building-secure-contractsSmart contract security toolkit with vulnerability scanners for 6 blockchains and 5 development guideline assistants
entry-point-analyzerIdentify state-changing entry points in smart contracts for security auditing

Code Auditing

PluginDescription
agentic-actions-auditorAudit GitHub Actions workflows for AI agent security vulnerabilities
audit-context-buildingUnderstand a codebase before looking for bugs in it, one function at a time
burpsuite-project-parserSearch and extract data from Burp Suite project files
c-reviewComprehensive C/C++ security code review, with coverage verified against a parse of the source
differential-reviewSecurity-focused differential review of code changes with git history analysis
dimensional-analysisAnnotate codebases with dimensional analysis comments to detect unit mismatches and formula bugs
fp-checkSystematic false positive verification for security bug analysis with mandatory gate reviews
insecure-defaultsParallel audit workflow for fail-open insecure defaults, with a refuting verifier per candidate file
rust-reviewComprehensive Rust security review covering safe/unsafe boundary, memory safety, concurrency, panic-DoS, FFI, and async runtime with SARIF output
semgrep-rule-creatorCreate and refine Semgrep rules for custom vulnerability detection
semgrep-rule-variant-creatorPort existing Semgrep rules to new target languages with test-driven validation
sharp-edgesIdentify error-prone APIs, dangerous configurations, and footgun designs
static-analysisStatic analysis toolkit with CodeQL, Semgrep, and SARIF parsing
supply-chain-risk-auditorAudit npm, PyPI, and Go dependencies for version-matched advisories, abandoned upstreams, publisher concentration, and install scripts
testing-handbook-skillsSkills from the Testing Handbook: fuzzers, static analysis, sanitizers, coverage
trailmarkCode graph analysis, bounded subagent context slicing, Mermaid diagrams, mutation testing triage, and protocol verification
variant-analysisFind similar vulnerabilities across codebases using pattern-based analysis
vulnerability-triage-brocardsTriage vulnerability reports using 7 brocards to accept, dismiss, or request more info before deeper analysis

Malware Analysis

PluginDescription
yara-authoringYARA detection rule authoring with linting, atom analysis, and best practices

Verification

PluginDescription
constant-time-analysisDetect compiler-induced timing side-channels in cryptographic code
mutation-testingConfigure mutation testing, analyze surviving mutants, and investigate bugs in weakly tested code
post-patch-validationHelp patch authors find missed variants and regressions, with reproducible failures and explicit validation gaps
property-based-testingWrite, review, and triage property-based tests — Hypothesis, fast-check, proptest, and Echidna or Medusa for Solidity invariants
spec-to-code-complianceCheck code against the documentation that specifies it, across contracts, C/C++, services, and firmware
writing-lean-proofsWrite structured Lean 4 proofs and design Lean libraries following Mathlib conventions
zeroize-auditDetect missing or compiler-eliminated zeroization of secrets in C/C++ and Rust

Reverse Engineering

PluginDescription
dwarf-expertAnalyze DWARF debug info: parse and search DIEs, verify integrity, write DWARF parsing code

Mobile Security

PluginDescription
firebase-apk-scannerScan Android APKs for Firebase security misconfigurations

Development

PluginDescription
code-improverAutonomous review-and-fix workflow over skills, plugins, or a branch, with a pluggable reviewer, findings ledger, escalation, and scope guard
devcontainer-setupCreate pre-configured devcontainers with Claude Code and language-specific tooling
gh-cliIntercept GitHub URL fetches — WebFetch, MCP fetch tools, and curl/wget — and redirect to the authenticated gh CLI
git-cleanupSafely clean up git worktrees and local branches: a dynamic workflow gathers merge evidence and tries to refute its own delete recommendations, behind gated confirmation
goal-promptDraft /goal commands for goal mode in Claude Code and Codex — verifiable completion conditions formatted to a copy-ready single line
github-triageTriage open GitHub issues and PRs: merge ready bot/approved PRs, review unreviewed ones via subagents, close resolved issues with cited comments, cross-link pending fixes, and score the rest with local-only priority and change-size estimates
let-fate-decideDraw Tarot cards using cryptographic randomness to add entropy to vague planning
modern-cppModern C++ best practices (C++20/23/26) with compiler hardening and safe idioms
modern-pythonModern Python tooling and best practices with uv, ruff, and pytest
open-sourcingPrepare a repository for public release: secrets hygiene, licensing, CI readiness, and release automation
review-walkthroughGenerate an interactive walkthrough of branch changes with ordered diffs, explanations, and anchored review findings
second-opinionGet independent reviews from Codex or Antigravity for uncommitted changes, branch diffs, and commits

Team Management

PluginDescription
culture-indexInterpret Culture Index survey results for individuals and teams

Tooling

PluginDescription
claude-in-chrome-troubleshootingDiagnose and fix Claude in Chrome MCP extension connectivity issues

Trophy Case

Bugs discovered using Trail of Bits Skills. Found something? Let us know!

When reporting bugs you've found, feel free to mention:

Found using Trail of Bits Skills

SkillBug
constant-time-analysisTiming side-channel in ML-DSA signing

Contributing

We welcome contributions! See AGENTS.md for skill authoring guidelines, and run make check before you push — it runs most of CI locally (see AGENTS.md for what it does not cover).

License

This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License. Made by Trail of Bits.