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entry-point-analyzer — Claude Code skill: entry point analysis

Finds externally callable smart contract functions that change state and classifies their access level. Use it before an audit to map the attack surface.

Install into Claude Code · Skills CLI (Vercel) All methods and platforms ↓ 
npx skills add trailofbits/skills --skill entry-point-analyzer -a claude-code
Open on GitHub

What entry-point-analyzer does

This skill scans a smart contract codebase for externally callable functions that can change state. It sorts each entry point by access level: unrestricted, role-restricted, restricted pending review, or contract-only. The result is a structured report for audit work.

It covers Solidity, Vyper, Solana with Rust, Move, TON, and CosmWasm. Read-only code is left out, including view, pure, @view, @pure, get methods, and query handlers. For Move, reachable public fun functions are considered even when they lack entry.

For Solidity, the skill checks for Slither before manual inspection and uses its output as a starting point. Slither can miss callbacks or dynamic access checks, so its results need manual review. If Slither fails, the analysis continues manually.

What it helps with

  • find state-changing contract functions
  • separate unrestricted and role-restricted entry points
  • identify privileged operations
  • review contract-to-contract call restrictions
  • map an audit attack surface

Example prompts for the agent

  • Run `entry-point-analyzer` on this repository and list state-changing entry points.
  • Use `entry-point-analyzer` to classify external functions by access control.
  • Run `entry-point-analyzer` and review privileged contract operations.

How to install entry-point-analyzer

1Skills CLI (Vercel)

npx skills add trailofbits/skills --skill entry-point-analyzer -a claude-code

2Manually: put the files in place

~/.claude/skills/entry-point-analyzer/SKILL.md

Copy the whole skill folder; for one project use .claude/skills/entry-point-analyzer/

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Questions about entry-point-analyzer

How do I install entry-point-analyzer in Claude Code?

Run npx skills add trailofbits/skills --skill entry-point-analyzer -a claude-code, then run npx skills add trailofbits/skills --skill entry-point-analyzer -a claude-code again. The skill file is at ~/.claude/skills/entry-point-analyzer/SKILL.md.

What does entry-point-analyzer do?

It identifies externally callable smart contract functions that change state and classifies their access restrictions. It produces structured audit material around those entry points.

Does entry-point-analyzer require Slither for Solidity?

No. It uses Slither when available and falls back to manual inspection if Slither is unavailable or fails.

See also

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