MCP server · Security
Pentagonal MCP server
Let your AI check, audit, fix and write smart contracts for Ethereum, Solana and other chains.
Pentagonal is a helper for people who work with smart contracts, the small programs that live on blockchains. It lets your AI look up a token, run a security check on a contract, fix a problem, or write a new contract from a plain description. It is handy if you deal with crypto tokens or contracts and want a second pair of eyes without hiring a full audit team.
What is an MCP server? The 30-second version
On its own, your AI can only chat with you. An MCP server is a small helper program that gives your AI a new skill or a connection to an app or service. This one connects your AI to Pentagonal, a service that works with smart contracts on blockchains like Ethereum, Base and Solana. Once it is connected, your AI can ask Pentagonal to look things up or do work for you when you ask.
What this MCP server does
You ask your AI something in normal words, like checking a token or reviewing a contract. Your AI passes that request to this helper, which talks to the Pentagonal service. Pentagonal then looks up the token, runs its security checks, fixes code, or writes new code, depending on what you asked. The result comes back into your chat as an answer, a list, or a piece of code you can read. Some actions cost money, and the helper tells you when that is the case.
Click to zoomWhat you can do with it
- Look up a token's price, holders, liquidity lock status and whether it looks like a honeypot
- Run a security audit on a smart contract and see problems grouped by how serious they are
- Fix a specific vulnerability in a contract while keeping the rest of the code working
- Generate a new Solidity or Rust contract from a plain description
- Compile Solidity code and get back the ABI, bytecode and gas estimates
- See the security rules the system has learned from past audits
- List all the blockchains Pentagonal supports
Try asking your AI
- “Check this token address for me and tell me if it is a honeypot”
- “Audit this Solidity contract and show me the most serious issues first”
- “Fix the reentrancy problem in this contract without changing anything else”
- “Write me a simple ERC-20 token contract with a fixed supply of one million”
What it gives back to you
You get answers right in the chat. A lookup comes back as facts about the token, like price, holder count and whether the liquidity is locked. An audit comes back as a list of issues grouped by severity, sometimes with example attacks. Generate and fix return code you can copy. Compile returns the ABI, bytecode and gas numbers.
Before you start
What you need
- Node.js installed on your computer (the free program that runs npx commands)
- A Pentagonal API key from pentagonal.ai (a kind of password for the service)
- Credit on your Pentagonal account if you want to run paid actions like audits or code generation
Good to know
Audits and code generation cost $5 each, so check your credit balance before running them, and never treat an automated audit as a replacement for a full professional review before you put real money on a contract.
Install it with your AI
Add Pentagonal MCP server to your AI, no technical skills needed
You don't install anything by hand. You copy one prompt, paste it into an AI that can work on your computer, and it checks, installs and connects the server for you, asking you when it needs something.
Sign in to get the install prompt
Members get a ready-made prompt that lets the Claude desktop app check Pentagonal MCP server, install it and connect it for them, step by step. You don't need any technical skills: you copy, paste and answer a few questions. Your connected AI can also find and install any of the 4,066 MCP servers here for you.
Who it's for
Crypto developers, founders and analysts who work with smart contracts and want quick checks or a first pass before a full audit.
