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Cairo Vulnerability Scanner

Checked
trailofbits·vlatest·security·CC-BY-SA-4.0

The Cairo Vulnerability Scanner analyzes Cairo smart contracts for potential security flaws, aiding developers in building robust and secure decentralized applications.

Repository

Install on your platform

Showing Claude Code. One command installs this skill into any of the agents below.

  1. 1

    Run this in your project

    terminal
    $ npx skills add trailofbits/skills --skill cairo-vulnerability-scanner -a claude-code

  2. Uses the open-source skills CLI and needs Node.js. Add -g to install it for your user instead of this project.

What we know about this skill

Publisher

trailofbits

Taken from the source listing. We haven't verified who controls this account.

Install target

Live repository

Not pinned. Installing fetches whatever the repository holds at the time you run the command.

No human has reviewed this code. The checks below are a static scan of the files at one commit — nobody has run this skill or judged whether it works. A skill runs with whatever access you give your agent, so read the source before you install it.

Automated safety checks

scanned

This skill passed all 6 checks. We read its files at one commit and looked for the things that make a skill dangerous to run — not for whether it works.

  • Declares what it does: passed

    SKILL.md parses and declares a name and a description.

    SKILL.md exists, its frontmatter parses, and it declares a name and a description.

  • No undeclared network calls: passed

    Makes no network calls.

    Every host the skill dials — from its scripts, its config endpoints or the commands it tells the agent to run — is either well-known package and API infrastructure or declared in its own frontmatter. Links in documentation are not counted.

  • No obfuscated payloads: passed

    No encoded or obfuscated payloads.

    No base64, hex or compressed blob is decoded and then executed, and no encoded shell commands.

  • No credential access: passed

    Reads no keys, tokens, keychains or credential files.

    Neither the code nor the SKILL.md instructions read SSH keys, cloud credentials, keychains, token stores, browser cookie databases or dotfiles that hold secrets.

  • No pipe-to-shell installers: passed

    No pipe-to-shell or download-and-run installers.

    No `curl … | sh` pattern, in the code or in the instructions, that runs code fetched at run time.

  • Pinned to a commit: passed

    Scanned trailofbits/skills at 82fe822625.

    The exact upstream commit SHA that was scanned is recorded, so the result refers to specific bytes.

Commit
82fe822625
Manifest
plugins/building-secure-contracts/skills/cairo-vulnerability-scanner/SKILL.md
Scanned
3 files, 1,051 lines
This is a static scan, not a review. It reads the skill's files; it does not run them, and it cannot tell you whether the skill is any good or whether the code does what its description says. A skill runs with whatever access you give your agent.
What each check looks for →

About this skill

What it does

The Cairo Vulnerability Scanner skill analyzes Cairo smart contract code for potential security vulnerabilities. It helps identify common issues such as arithmetic overflows, reentrancy risks, and incorrect access controls within Starknet programs written in Cairo. This tool aims to improve the overall security posture of Cairo-based applications by proactively detecting and mitigating weaknesses.

When to use it

  • Smart contract development: Integrate into your CI/CD pipeline to automatically scan new or modified Cairo contracts before deployment.
  • Security audits: Use as part of a broader security audit process to identify potential vulnerabilities beyond manual code review.
  • Vulnerability research: Analyze existing Cairo smart contracts to discover and understand common attack patterns.
  • Educational purposes: Learn about common Cairo vulnerability types by examining real-world examples.

Key capabilities

  • Static analysis of Cairo code
  • Identification of potential security vulnerabilities
  • Supports Starknet programs written in Cairo

Example prompts

  • "Scan this Cairo smart contract for vulnerabilities: [paste contract code]"
  • "Analyze the following Starknet program and report any potential security risks: [paste program code]"
  • "Find arithmetic overflow issues in this Cairo contract."

Tips & gotchas

  • The scanner's effectiveness depends on the quality of its vulnerability signatures. It may not detect all possible vulnerabilities.