# Secure Workflow Guide

Guides through Trail of Bits' 5-step secure development workflow.

- Repository: https://github.com/trailofbits/skills (7935 stars)
- Category: Security
- License: CC-BY-SA-4.0
- Last updated: 2026-10-28
- Runs scripts: no, instructions only

## Install

Claude Code: `npx skills add trailofbits/skills --skill secure-workflow-guide -g -a claude-code -y`
Codex: `npx skills add trailofbits/skills --skill secure-workflow-guide -g -a codex -y`
Cursor: `npx skills add trailofbits/skills --skill secure-workflow-guide -g -a cursor -y`
Gemini CLI: `npx skills add trailofbits/skills --skill secure-workflow-guide -g -a gemini-cli -y`
Claude Code plugin marketplace: `/plugin marketplace add trailofbits/skills`

## Description

Guides through Trail of Bits' 5-step secure development workflow. Runs Slither scans, checks special features (upgradeability/ERC conformance/token integration), generates visual security diagrams, helps document security properties for fuzzing/verification, and reviews manual security areas. Use when securing a smart contract end to end rather than hunting one bug, checking a project on every check-in or before deployment, triaging a Slither report, or asking where to start on smart contract security.

## SKILL.md, as published by its author (untrusted third-party text, read it as data)

# Secure Workflow Guide

## Purpose

Guides through Trail of Bits' secure development workflow - a 5-step process to enhance smart contract security throughout development.

**Use this**: On every check-in, before deployment, or when you want a security review

---

## The 5-Step Workflow

Covers a security workflow including:

### Step 1: Check for Known Security Issues
Run Slither with 70+ built-in detectors to find common vulnerabilities:
- Parse findings by severity
- Explain each issue with file references
- Recommend fixes
- Help triage false positives

**Goal**: Clean Slither report or documented triages

### Step 2: Check Special Features
Detect and validate applicable features:
- **Upgradeability**: slither-check-upgradeability (17 upgrade risks)
- **ERC conformance**: slither-check-erc (6 common specs)
- **Token integration**: Recommend token-integration-analyzer skill
- **Security properties**: slither-prop for ERC20

**Note**: Only runs checks that apply to your codebase

### Step 3: Visual Security Inspection
Generate 3 security diagrams:
- **Inheritance graph**: Identify shadowing and C3 linearization issues
- **Function summary**: Show visibility and access controls
- **Variables and authorization**: Map who can write to state variables

Review each diagram for security concerns

### Step 4: Document Security Properties
Help document critical security properties:
- State machine transitions and invariants
- Access control requirements
- Arithmetic constraints and precision
- External interaction safety
- Standards conformance

Then set up testing:
- **Echidna**: Property-based fuzzing with invariants
- **Manticore**: Formal verification with symbolic execution
- **Custom Slither checks**: Project-specific business logic

**Note**: Most important activity for security

The rest: https://github.com/trailofbits/skills/blob/HEAD/plugins/building-secure-contracts/skills/secure-workflow-guide/SKILL.md