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Guidelines Advisor · trailofbits | DecimalAI

securityby trailofbits

Guidelines Advisor

trailofbits/guidelines-advisor

Source trailofbits/skills ↗License CC-BY-SA-4.0

Smart contract development advisor based on Trail of Bits' best practices. Analyzes codebase to generate documentation/specifications, review architecture, check upgradeability patterns, assess implementation quality, identify pitfalls, review dependencies, and evaluate testing. Provides actionable recommendations.

SkillScore87Maintained

Automatic

Security & AppSec pack

Last verified 8/7/2026

What it changes

Passed 20 of 23 test cases with the skill, and 18 of 23 without it.

Without skill78%

With skill87%

Checks it passed that the model alone missed

The response identifies storage layout collision between the proxy and implementation state variables.
The response states that sections cannot be declared N/A without explicit codebase search and verification.

2 fixed18 passed either way3 still failing0 broke

Pass-rate lift: +9 pp
Tokens: +36%
Agent turns: 0%
Response time: -34%

Model gemini-3.6-flashMeasured 8/7/2026v120 of 23 cases passed with skill

Tokens, turns and time describe resource use, not a dollar price.

Use this skill

Save it into your project's skills folder. Claude Code picks it up in its next session.

curl -fsSL --create-dirs -o .claude/skills/trailofbits-guidelines-advisor/SKILL.md https://app.decimal.ai/s/trailofbits-guidelines-advisor/SKILL.md

Want it pinned and updatable? pip install "decimalai>=0.15", then decimalai skills add trailofbits-guidelines-advisor, and start Claude Code with claude --plugin-dir "$(git rev-parse --show-toplevel)/.agents"

1 · One-time — install the CLI (docs ↗)

pip install "decimalai>=0.15"

2 · Get the skill — writes .agents/skills/trailofbits-guidelines-advisor/ and pins it in .decimal/skills.lock

decimalai skills add trailofbits-guidelines-advisor

No CLI? Get the same file — curl · raw file

curl -fsSL --create-dirs -o .claude/skills/trailofbits-guidelines-advisor/SKILL.md https://app.decimal.ai/s/trailofbits-guidelines-advisor/SKILL.md

Raw file: /s/trailofbits-guidelines-advisor/SKILL.md ↗ · machine-readable summary at /s/trailofbits-guidelines-advisor.json ↗

Safety checks: 3 of 3 passed

Code scan CleanIntent PassedContent Clean

See it in action

One of 2 test cases the skill fixed. Same model, same prompt, with and without the skill.

1 of 2

Prompt

We deployed an ERC1967 proxy contract wrapping an implementation contract that stores state variables starting at slot 0. The implementation contract inherits from a base contract that also declares uint256 private _status at slot 0. What specific vulnerability check must be conducted during architectural analysis?

What was checked, without and with the skill
Checked	Without skill	With skill
The response identifies storage layout collision between the proxy and implementation state variables.	Missed	Passed

case-07 · gemini-3.6-flash · 8/7/2026 · answers are capped and redacted

What's inside

The instructions your model reads when the skill loads.

SKILL.md247 lines2 files

Guidelines Advisor

Purpose

Systematically analyzes the codebase and provides guidance based on Trail of Bits' development guidelines:

Generate documentation and specifications (plain English descriptions, architectural diagrams, code documentation)
Optimize on-chain/off-chain architecture (only if applicable)
Review upgradeability patterns (if your project has upgrades)
Check delegatecall/proxy implementations (if present)
Assess implementation quality (functions, inheritance, events)
Identify common pitfalls
Review dependencies
Evaluate test suite and suggest improvements

Framework: Building Secure Contracts - Development Guidelines

How This Works

Phase 1: Discovery & Context

Explores the codebase to understand:

Project structure and platform
Contract/module files and their purposes
Existing documentation
Architecture patterns (proxies, upgrades, etc.)
Testing setup
Dependencies

Phase 2: Documentation Generation

Helps create:

Plain English system description
Architectural diagrams (using Slither printers for Solidity)
Code documentation recommendations (NatSpec for Solidity)

Phase 3: Architecture Analysis

Analyzes:

On-chain vs off-chain component distribution (if applicable)
Upgradeability approach (if applicable)

Track record

Benchmark

20 / 23

test cases passed, vs 18 / 23 without

Adoption

Users: 0
Times used: 0

Safety and source details

SkillSafety

✓ 3 of 3 passed

Code scan15 of 15 checks clean

0 critical · 0 warning · 0 info — scanner v4 — 8/3/2026

View 15 scanner checks

live_secretremote_code_executionreverse_shelldata_exfiltrationssrf_metadataagent_snoopinganti_refusaldestructive_commandsobfuscated_unicodeunicode_homoglyphopaque_blobsuspicious_urltool_overreachtrigger_abuseprompt_injection_phrasing

IntentSafe

LLM judge · does the skill do what it claims

ContentClean

LLM judge · policy & harmful-content review

Source

Imported

trailofbits / skills

plugins/building-secure-contracts/skills/guidelines-advisor/SKILL.md

View on GitHub ↗

License CC-BY-SA-4.0Imported 8/3/2026Version v1Bundled 1 file

More skills from the same source and nearby in the registry, with their headline benchmark lift.

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See it in action

What's inside

Guidelines Advisor

Purpose

How This Works

Phase 1: Discovery & Context

Phase 2: Documentation Generation

Phase 3: Architecture Analysis

Track record

Benchmark

Adoption

SkillSafety

Source

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