* Give differential-review a trigger, and name every component in its README differential-review's description listed what it does and never named a situation, so it competed on capability wording alone. It now closes with the triggers its own README already documents — reviewing a PR, commit, or diff; checking whether a change re-introduces a fixed bug; asking what else a change could break; finding modified code with no test. The same plugin's README never mentioned adversarial-modeler, which is what Phase 5 dispatches for HIGH RISK changes. Checking whether that was isolated turned up more of it, and the sweep found three kinds of gap: zeroize-audit's agent table was missing three of its eleven agents — 0-preflight, which gates the entire run, plus 5b-poc-validator and 5c-poc-verifier. All three appear in the phase diagram directly above the table, which is why they read as present. constant-time-analysis documents the ct-analyzer CLI end to end and never says the plugin also ships a skill and a command. entry-point-analyzer lists phrases that trigger its skill but never names the skill or its command. Three more READMEs describe their skill without naming it. That matters most where the skill name is not the plugin name and a user cannot guess it: chrome-mcp-troubleshooting and interpreting-culture-index. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> * Fix review findings and make the README sweep a gate The two PoC rows I added to zeroize-audit said Phase 4. The diagram three lines above them, SKILL.md, and workflows/phase-5-poc-validation.md all say Phase 5, steps 5a and 5b. "Wave 5a" is a label that exists nowhere. A debugger consulting the table — the artifact this branch designates as what runs when — would have opened phase-4-poc-generation.md and found no validation in it. Also corrected the sentence introducing that table, which still said 10 agents across 8 phases against 11 across 9, and the Phase 0 diagram line, which still credited the orchestrator for a gate the new row credits to 0-preflight. differential-review's README claimed the agent is "dispatched", and named it bare in a column whose other rows are namespaced. Nothing dispatches it: the only instruction is prose in SKILL.md, and a bare subagent_type fails at runtime. Namespaced both, and corrected the five stale line counts in the same file — reporting.md is 369 lines, not the ~120 the token-efficiency section budgets for. Drop the dead `name: trailofbits:<cmd>` key from five command files. The three newest command files carry no name: at all, #275 namespaced 22 bare invocations, and this branch documents the `/<plugin>:<cmd>` form — so the key contradicts the docs it sits next to. Then make the sweep repeatable. Doing this by hand three times found eight gaps and missed two more, both of the same shape: a workflow ships under meta.name, not its filename, so a README citing the filename never writes the name a reader types. The validator now checks that a README names every skill, agent, command, and workflow its plugin ships, reading meta.name for workflows. It refuses a run that inspected zero components, and six self-test assertions hold it to known-bad fixtures. It found git-cleanup on its first run: ships as /git-cleanup:git-cleanup-analysis, README cites workflows/analyze-branches.js four times and that name never. static-analysis had the same gap for codeql-build. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> * Fix both P2s: the gate was a substring test, and the dispatch was still bare The README gate ran `name not in text`. That reads as thorough and could not fail for a large share of what it counted: `draw` was satisfied by "(draw cards instead)", `semgrep-rule` by the plugin's own name in the install line, `burp-search` by a `scripts/burp-search.sh` path that is a different thing, and `audit` by the prose "shared-state struct audit". Match by kind instead. Commands and workflows are reachable only as `/<plugin>:<name>`, so require that literal — it is the only string a user can type. Agents are dispatched by identifier and never typed as prose, so require an identifier-shaped mention. Skills are genuinely referred to by bare name, so require only a delimited occurrence, which is what stops "draws" counting as `draw`. That surfaced seven real gaps, the four above plus insecure-defaults' audit-pipeline workflow, mutation-testing's skill, and trailmark's code-slice-worker. All seven fixed. adversarial-modeler was still bare at SKILL.md:96. Line 77 was the decision-tree mention; line 96 is the "Delegate to this agent" instruction a model actually acts on, so the runtime failure the last commit claimed to fix survived it. Namespaced, and it now says why. Also from the review: a per-kind floor, since a single total stays healthy while skill_files() — 63% of coverage — silently stops matching; workflow_names anchored to the meta block, because a bare search takes any earlier `name:` in a comment, and .mjs was invisible; and AGENTS.md documents the new hard failure. Self-test 88 -> 96, each new rule with a negative control. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> --------- Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>
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
| Plugin | Description |
|---|---|
| building-secure-contracts | Smart contract security toolkit with vulnerability scanners for 6 blockchains and 5 development guideline assistants |
| entry-point-analyzer | Identify state-changing entry points in smart contracts for security auditing |
Code Auditing
| Plugin | Description |
|---|---|
| agentic-actions-auditor | Audit GitHub Actions workflows for AI agent security vulnerabilities |
| audit-context-building | Understand a codebase before looking for bugs in it, one function at a time |
| burpsuite-project-parser | Search and extract data from Burp Suite project files |
| c-review | Comprehensive C/C++ security code review, with coverage verified against a parse of the source |
| differential-review | Security-focused differential review of code changes with git history analysis |
| dimensional-analysis | Annotate codebases with dimensional analysis comments to detect unit mismatches and formula bugs |
| fp-check | Systematic false positive verification for security bug analysis with mandatory gate reviews |
| insecure-defaults | Parallel audit workflow for fail-open insecure defaults, with a refuting verifier per candidate file |
| rust-review | Comprehensive Rust security review covering safe/unsafe boundary, memory safety, concurrency, panic-DoS, FFI, and async runtime with SARIF output |
| semgrep-rule-creator | Create and refine Semgrep rules for custom vulnerability detection |
| semgrep-rule-variant-creator | Port existing Semgrep rules to new target languages with test-driven validation |
| sharp-edges | Identify error-prone APIs, dangerous configurations, and footgun designs |
| static-analysis | Static analysis toolkit with CodeQL, Semgrep, and SARIF parsing |
| supply-chain-risk-auditor | Audit npm, PyPI, and Go dependencies for version-matched advisories, abandoned upstreams, publisher concentration, and install scripts |
| testing-handbook-skills | Skills from the Testing Handbook: fuzzers, static analysis, sanitizers, coverage |
| trailmark | Code graph analysis, bounded subagent context slicing, Mermaid diagrams, mutation testing triage, and protocol verification |
| variant-analysis | Find similar vulnerabilities across codebases using pattern-based analysis |
| vulnerability-triage-brocards | Triage vulnerability reports using 7 brocards to accept, dismiss, or request more info before deeper analysis |
Malware Analysis
| Plugin | Description |
|---|---|
| yara-authoring | YARA detection rule authoring with linting, atom analysis, and best practices |
Verification
| Plugin | Description |
|---|---|
| constant-time-analysis | Detect compiler-induced timing side-channels in cryptographic code |
| mutation-testing | Configure mewt/muton mutation testing campaigns — scope targets, tune timeouts, optimize long runs |
| property-based-testing | Write, review, and triage property-based tests — Hypothesis, fast-check, proptest, and Echidna or Medusa for Solidity invariants |
| spec-to-code-compliance | Check code against the documentation that specifies it, across contracts, C/C++, services, and firmware |
| writing-lean-proofs | Write structured Lean 4 proofs and design Lean libraries following Mathlib conventions |
| zeroize-audit | Detect missing or compiler-eliminated zeroization of secrets in C/C++ and Rust |
Reverse Engineering
| Plugin | Description |
|---|---|
| dwarf-expert | Analyze DWARF debug info: parse and search DIEs, verify integrity, write DWARF parsing code |
Mobile Security
| Plugin | Description |
|---|---|
| firebase-apk-scanner | Scan Android APKs for Firebase security misconfigurations |
Development
| Plugin | Description |
|---|---|
| code-improver | Autonomous review-and-fix workflow over skills, plugins, or a branch, with a pluggable reviewer, findings ledger, escalation, and scope guard |
| devcontainer-setup | Create pre-configured devcontainers with Claude Code and language-specific tooling |
| gh-cli | Intercept GitHub URL fetches — WebFetch, MCP fetch tools, and curl/wget — and redirect to the authenticated gh CLI |
| git-cleanup | Safely 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-prompt | Draft /goal commands for goal mode in Claude Code and Codex — verifiable completion conditions formatted to a copy-ready single line |
| github-triage | Triage 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-decide | Draw Tarot cards using cryptographic randomness to add entropy to vague planning |
| modern-cpp | Modern C++ best practices (C++20/23/26) with compiler hardening and safe idioms |
| modern-python | Modern Python tooling and best practices with uv, ruff, and pytest |
| open-sourcing | Prepare a repository for public release: secrets hygiene, licensing, CI readiness, and release automation |
| second-opinion | Run code reviews using external LLM CLIs (OpenAI Codex, Google Gemini) on changes, diffs, or commits. Bundles Codex's built-in MCP server. |
Team Management
| Plugin | Description |
|---|---|
| culture-index | Interpret Culture Index survey results for individuals and teams |
Tooling
| Plugin | Description |
|---|---|
| claude-in-chrome-troubleshooting | Diagnose 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
| Skill | Bug |
|---|---|
| constant-time-analysis | Timing 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.