Pentagonal MCP server

Q: How do I add Pentagonal MCP to Claude Code?

Run `claude mcp add --env 'PENTAGONAL_API_KEY= ' pentagonal-mcp -- npx -y pentagonal-mcp` in your terminal. Add `--scope user` to make it available in every project.

Q: How do I add Pentagonal MCP to Cursor?

Open `~/.cursor/mcp.json` and add the server under `mcpServers`, using the Cursor config shown in the install section above.

Q: How do I get an API key?

Sign in to pentagonal.ai, click your avatar, and select API Keys to generate one.

✓ Verified

pentagonal-ai/pentagonal-mcp · typescript · MIT

Enables AI clients to perform smart contract security audits, generation, compilation, and token intelligence across eight different blockchains.

Also known as Pentagonal-ai/pentagonal

stdio 7 tools Developer Tools Security

Install GitHub ↗

Stars: 1
Tools: 7
Downloads, 30 days: —
Latest version: 1.0.1
Last commit: Jul 27, 2026
License: MIT

What is Pentagonal MCP?

Pentagonal enables AI clients to perform smart contract security audits, generation, compilation, and token intelligence across eight different blockchains. It exposes 7 tools, such as pentagonal_lookup, pentagonal_audit, pentagonal_generate.

Summary generated from the project's README

About Pentagonal MCP server

Pentagonal-mcp provides developers with a suite of tools for smart contract development and security across eight different blockchains, including Ethereum, Solana, Base, and Polygon. It allows AI clients to perform deep security pen tests using an eight-agent system, generate Solidity or Anchor/Rust contracts from natural language, and compile code into ABI and bytecode with gas estimates. Users can also access token intelligence data such as price, holder counts, and honeypot checks.

This server can be integrated into Claude Desktop via stdio or used with Claude Code, Cursor, and Windsurf through an HTTP connection. Setting up the server requires a PENTAGONAL_KEY obtained from the Pentagonal website. While tools like pentagonal_fix, pentagonal_compile, and pentagonal_lookup are free with rate limits, premium features like pentagonal_audit and pentagonal_generate require credits or x402 payments. This setup enables a complete workflow for creating, testing, and verifying blockchain code within an AI-driven environment.

What you can do with it

1Perform security auditsRequest a comprehensive security pen test on a smart contract to identify vulnerabilities and proof of concept exploits.
2Generate new smart contractsAsk the AI to write a new contract in Solidity or Anchor/Rust based on a written description.
3Analyze token dataCheck the liquidity lock status, holder distribution, and potential honeypot risks for a specific token.
4Fix contract vulnerabilitiesProvide a specific security flaw and ask the agent to repair it without changing the original contract logic.

Written from the project's README. Every use case is checked against a quote from it.

How to install Pentagonal MCP

Formats verified 10 Nov 2026Add to Cursor Add to Goose

Claude CodeCursorVS CodeVS Code CLIClaude DesktopCodexCodex config.tomlGemini CLIGemini settings.json

$ claude mcp add --env 'PENTAGONAL_API_KEY=<YOUR_PENTAGONAL_API_KEY>' pentagonal-mcp -- npx -y pentagonal-mcp

~/.cursor/mcp.json

{
  "mcpServers": {
    "pentagonal-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "pentagonal-mcp"
      ],
      "env": {
        "PENTAGONAL_API_KEY": "<YOUR_PENTAGONAL_API_KEY>"
      }
    }
  }
}

.vscode/mcp.json

{
  "servers": {
    "pentagonal-mcp": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "pentagonal-mcp"
      ],
      "env": {
        "PENTAGONAL_API_KEY": "<YOUR_PENTAGONAL_API_KEY>"
      }
    }
  }
}

$ code --add-mcp '{"name":"pentagonal-mcp","type":"stdio","command":"npx","args":["-y","pentagonal-mcp"],"env":{"PENTAGONAL_API_KEY":"<YOUR_PENTAGONAL_API_KEY>"}}'

claude_desktop_config.json

{
  "mcpServers": {
    "pentagonal-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "pentagonal-mcp"
      ],
      "env": {
        "PENTAGONAL_API_KEY": "<YOUR_PENTAGONAL_API_KEY>"
      }
    }
  }
}

$ codex mcp add pentagonal-mcp --env 'PENTAGONAL_API_KEY=<YOUR_PENTAGONAL_API_KEY>' -- npx -y pentagonal-mcp

~/.codex/config.toml

[mcp_servers.pentagonal-mcp]
command = "npx"
args = ["-y", "pentagonal-mcp"]

[mcp_servers.pentagonal-mcp.env]
PENTAGONAL_API_KEY = "<YOUR_PENTAGONAL_API_KEY>"

$ gemini mcp add -s user -e 'PENTAGONAL_API_KEY=<YOUR_PENTAGONAL_API_KEY>' pentagonal-mcp npx -- -y pentagonal-mcp

~/.gemini/settings.json

{
  "mcpServers": {
    "pentagonal-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "pentagonal-mcp"
      ],
      "env": {
        "PENTAGONAL_API_KEY": "<YOUR_PENTAGONAL_API_KEY>"
      }
    }
  }
}

Set 2 environment variables before starting the server (below).Setup guides:Claude Code Cursor VS Code Claude Desktop

Pentagonal MCP tools 7

Detected from the README

pentagonal_lookup
pentagonal_audit
pentagonal_generate
pentagonal_fix
pentagonal_compile
pentagonal_rules
pentagonal_chains

pentagonal_lookup	—
pentagonal_audit	—
pentagonal_generate	—
pentagonal_fix	—
pentagonal_compile	—
pentagonal_rules	—
pentagonal_chains	—

Configuration

PENTAGONAL_API_KEYSecret
Pentagonal API key (optional — free tools work without it, paid tools accept x402 USDC on Base)
PENTAGONAL_KEY

Name	Description
PENTAGONAL_API_KEY	Pentagonal API key (optional — free tools work without it, paid tools accept x402 USDC on Base)	Secret
PENTAGONAL_KEY	—

Automated checks

Ran Nov 14, 2026Full report →

100/100

Passed our automated checks. That is not a security audit: read the code and give the server the narrowest access it needs. How checks work

Show this score in your README

Source repository linked and reachablepentagonal-ai/pentagonal is public and reachablegithub.com/pentagonal-ai/pentagonal ↗Pass
Package names this repository as its sourcepentagonal-mcp names pentagonal-ai/pentagonal as sourcenpmjs.com/package/pentagonal-mcp ↗Pass
Build provenance (Sigstore attestation)No build attestation published for this releaseNot checked
Open source license (OSI)MITspdx.org/licenses/MIT.html ↗Pass
Commit or release in the last yearLast commit or release 2026-07-27github.com/pentagonal-ai/pentagonal ↗Pass
OpenSSF ScorecardNot checked
Package name not close to a popular packageNo popular package one edit away from pentagonal-mcpPass
No critical advisory in the package or its dependencies137 resolved dependencies checked; no critical advisoryosv.dev ↗Pass
No hidden instructions to the model7 tool descriptions and the README read; no override phrases, credential paths or hidden charactersPass
Destructive tools are labelledNo tool named like delete, drop or execPass
Remote endpoint answers the MCP handshakeNot checked

README

View on GitHub

pentagonal-mcp

MCP server for Pentagonal — the AI-powered smart contract forge.

Tools

Tool	Description	Auth
`pentagonal_lookup`	Token intelligence — price, holders, LP lock, honeypot, source code	Free (rate limited)
`pentagonal_audit`	8-agent security pen test with severity grouping and PoC exploits	$5 (credit or x402)
`pentagonal_generate`	Generate contracts from natural language (Solidity + Anchor/Rust)	$5 (credit or x402)
`pentagonal_fix`	Fix a specific vulnerability while preserving functionality	Free (rate limited)
`pentagonal_compile`	Compile Solidity to ABI + bytecode + gas estimates	Free (rate limited)
`pentagonal_rules`	View accumulated self-learning security rules	Free
`pentagonal_chains`	List all supported blockchains	Free

Supports Ethereum, Base, Polygon, Arbitrum, Optimism, BSC, Avalanche, and Solana.

Setup

Claude Desktop (stdio)

Add to claude_desktop_config.json:

{
  "mcpServers": {
    "pentagonal": {
      "command": "npx",
      "args": ["-y", "pentagonal-mcp"],
      "env": {
        "PENTAGONAL_KEY": "your-api-key"
      }
    }
  }
}

Claude Code / Cursor / Windsurf (HTTP)

Add to your MCP config:

{
  "mcpServers": {
    "pentagonal": {
      "type": "http",
      "url": "https://www.pentagonal.ai/api/mcp",
      "headers": {
        "x-pentagonal-api-key": "your-api-key"
      }
    }
  }
}

Get an API Key

Sign in at pentagonal.ai
Click your avatar → 🔑 API Keys
Generate a key — it's shown once, copy it immediately

Payment Options

Credits — $5 per audit or generate, buy via the web app (EVM or Solana)
x402 — agents pay per-use with USDC on Base (no account needed)
API key — use your credit balance programmatically
Free tools — fix, compile, lookup, rules, chains are free for everyone

License

MIT

Read full README

Pentagonal MCP questions

How do I add Pentagonal MCP to Claude Code?

Run claude mcp add --env 'PENTAGONAL_API_KEY=<YOUR_PENTAGONAL_API_KEY>' pentagonal-mcp -- npx -y pentagonal-mcp in your terminal. Add --scope user to make it available in every project.

How do I add Pentagonal MCP to Cursor?

Open ~/.cursor/mcp.json and add the server under mcpServers, using the Cursor config shown in the install section above.

What tools does Pentagonal MCP provide?

It exposes 7 tools, including pentagonal_lookup, pentagonal_audit, pentagonal_generate, pentagonal_fix, pentagonal_compile.

Which blockchains are supported?

The server supports Ethereum, Base, Polygon, Arbitrum, Optimism, BSC, Avalanche, and Solana.

What tools are available for free?

You can use the fix, compile, lookup, rules, and chains tools for free, though they are rate limited.

How much does a security audit cost?

A security audit costs $5, which can be paid using credits or x402.

How do I get an API key?

Facts

Nov 15, 2026

Stars: 1
Downloads, 30 days: —
Latest version: 1.0.1
Last commit: Jul 27, 2026
License: MIT
Transport: stdio
Package: pentagonal-mcp

Pentagonal-ai ↗

Community publisher

Published by an independent maintainer.

Alternatives

Works with

Claude Code Cursor VS Code Claude Desktop Codex Gemini CLI Windsurf Devin

Badge for your README

Show your HostedMCP checks score. The badge links readers to install instructions for every client.

[![HostedMCP checks](https://api.hostedmcp.org/v1/badge/server/pentagonal-ai/pentagonal-mcp.svg)](https://hostedmcp.org/servers/pentagonal-ai/pentagonal-mcp/checks)

Maintainer?

Claim this listing to edit it and add the HostedMCP badge to your README.

Claim listing

Before you install

Servers run with the permissions you give them. Use the narrowest token or database role that does the job.

Pentagonal MCP server

✓ Verified

pentagonal-ai/pentagonal-mcp · typescript · MIT

Enables AI clients to perform smart contract security audits, generation, compilation, and token intelligence across eight different blockchains.

Also known as Pentagonal-ai/pentagonal

stdio 7 tools Developer Tools Security

Install GitHub ↗

Stars: 1
Tools: 7
Downloads, 30 days: —
Latest version: 1.0.1
Last commit: Jul 27, 2026
License: MIT

What is Pentagonal MCP?

Summary generated from the project's README

About Pentagonal MCP server

What you can do with it

1Perform security auditsRequest a comprehensive security pen test on a smart contract to identify vulnerabilities and proof of concept exploits.
2Generate new smart contractsAsk the AI to write a new contract in Solidity or Anchor/Rust based on a written description.
3Analyze token dataCheck the liquidity lock status, holder distribution, and potential honeypot risks for a specific token.
4Fix contract vulnerabilitiesProvide a specific security flaw and ask the agent to repair it without changing the original contract logic.

Written from the project's README. Every use case is checked against a quote from it.

How to install Pentagonal MCP

Formats verified 10 Nov 2026Add to Cursor Add to Goose

Claude CodeCursorVS CodeVS Code CLIClaude DesktopCodexCodex config.tomlGemini CLIGemini settings.json

$ claude mcp add --env 'PENTAGONAL_API_KEY=<YOUR_PENTAGONAL_API_KEY>' pentagonal-mcp -- npx -y pentagonal-mcp

~/.cursor/mcp.json

{
  "mcpServers": {
    "pentagonal-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "pentagonal-mcp"
      ],
      "env": {
        "PENTAGONAL_API_KEY": "<YOUR_PENTAGONAL_API_KEY>"
      }
    }
  }
}

.vscode/mcp.json

{
  "servers": {
    "pentagonal-mcp": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "pentagonal-mcp"
      ],
      "env": {
        "PENTAGONAL_API_KEY": "<YOUR_PENTAGONAL_API_KEY>"
      }
    }
  }
}

$ code --add-mcp '{"name":"pentagonal-mcp","type":"stdio","command":"npx","args":["-y","pentagonal-mcp"],"env":{"PENTAGONAL_API_KEY":"<YOUR_PENTAGONAL_API_KEY>"}}'

claude_desktop_config.json

{
  "mcpServers": {
    "pentagonal-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "pentagonal-mcp"
      ],
      "env": {
        "PENTAGONAL_API_KEY": "<YOUR_PENTAGONAL_API_KEY>"
      }
    }
  }
}

$ codex mcp add pentagonal-mcp --env 'PENTAGONAL_API_KEY=<YOUR_PENTAGONAL_API_KEY>' -- npx -y pentagonal-mcp

~/.codex/config.toml

[mcp_servers.pentagonal-mcp]
command = "npx"
args = ["-y", "pentagonal-mcp"]

[mcp_servers.pentagonal-mcp.env]
PENTAGONAL_API_KEY = "<YOUR_PENTAGONAL_API_KEY>"

$ gemini mcp add -s user -e 'PENTAGONAL_API_KEY=<YOUR_PENTAGONAL_API_KEY>' pentagonal-mcp npx -- -y pentagonal-mcp

~/.gemini/settings.json

{
  "mcpServers": {
    "pentagonal-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "pentagonal-mcp"
      ],
      "env": {
        "PENTAGONAL_API_KEY": "<YOUR_PENTAGONAL_API_KEY>"
      }
    }
  }
}

Set 2 environment variables before starting the server (below).Setup guides:Claude Code Cursor VS Code Claude Desktop

Pentagonal MCP tools 7

Detected from the README

pentagonal_lookup
pentagonal_audit
pentagonal_generate
pentagonal_fix
pentagonal_compile
pentagonal_rules
pentagonal_chains

pentagonal_lookup	—
pentagonal_audit	—
pentagonal_generate	—
pentagonal_fix	—
pentagonal_compile	—
pentagonal_rules	—
pentagonal_chains	—

Configuration

PENTAGONAL_API_KEYSecret
Pentagonal API key (optional — free tools work without it, paid tools accept x402 USDC on Base)
PENTAGONAL_KEY

Name	Description
PENTAGONAL_API_KEY	Pentagonal API key (optional — free tools work without it, paid tools accept x402 USDC on Base)	Secret
PENTAGONAL_KEY	—

Automated checks

Ran Nov 14, 2026Full report →

100/100

Passed our automated checks. That is not a security audit: read the code and give the server the narrowest access it needs. How checks work

Show this score in your README

Source repository linked and reachablepentagonal-ai/pentagonal is public and reachablegithub.com/pentagonal-ai/pentagonal ↗Pass
Package names this repository as its sourcepentagonal-mcp names pentagonal-ai/pentagonal as sourcenpmjs.com/package/pentagonal-mcp ↗Pass
Build provenance (Sigstore attestation)No build attestation published for this releaseNot checked
Open source license (OSI)MITspdx.org/licenses/MIT.html ↗Pass
Commit or release in the last yearLast commit or release 2026-07-27github.com/pentagonal-ai/pentagonal ↗Pass
OpenSSF ScorecardNot checked
Package name not close to a popular packageNo popular package one edit away from pentagonal-mcpPass
No critical advisory in the package or its dependencies137 resolved dependencies checked; no critical advisoryosv.dev ↗Pass
No hidden instructions to the model7 tool descriptions and the README read; no override phrases, credential paths or hidden charactersPass
Destructive tools are labelledNo tool named like delete, drop or execPass
Remote endpoint answers the MCP handshakeNot checked

README

View on GitHub

pentagonal-mcp

MCP server for Pentagonal — the AI-powered smart contract forge.

Tools

Tool	Description	Auth
`pentagonal_lookup`	Token intelligence — price, holders, LP lock, honeypot, source code	Free (rate limited)
`pentagonal_audit`	8-agent security pen test with severity grouping and PoC exploits	$5 (credit or x402)
`pentagonal_generate`	Generate contracts from natural language (Solidity + Anchor/Rust)	$5 (credit or x402)
`pentagonal_fix`	Fix a specific vulnerability while preserving functionality	Free (rate limited)
`pentagonal_compile`	Compile Solidity to ABI + bytecode + gas estimates	Free (rate limited)
`pentagonal_rules`	View accumulated self-learning security rules	Free
`pentagonal_chains`	List all supported blockchains	Free

Supports Ethereum, Base, Polygon, Arbitrum, Optimism, BSC, Avalanche, and Solana.

Setup

Claude Desktop (stdio)

Add to claude_desktop_config.json:

{
  "mcpServers": {
    "pentagonal": {
      "command": "npx",
      "args": ["-y", "pentagonal-mcp"],
      "env": {
        "PENTAGONAL_KEY": "your-api-key"
      }
    }
  }
}

Claude Code / Cursor / Windsurf (HTTP)

Add to your MCP config:

{
  "mcpServers": {
    "pentagonal": {
      "type": "http",
      "url": "https://www.pentagonal.ai/api/mcp",
      "headers": {
        "x-pentagonal-api-key": "your-api-key"
      }
    }
  }
}

Get an API Key

Sign in at pentagonal.ai
Click your avatar → 🔑 API Keys
Generate a key — it's shown once, copy it immediately

Payment Options

Credits — $5 per audit or generate, buy via the web app (EVM or Solana)
x402 — agents pay per-use with USDC on Base (no account needed)
API key — use your credit balance programmatically
Free tools — fix, compile, lookup, rules, chains are free for everyone

License

MIT

Read full README

Pentagonal MCP questions

How do I add Pentagonal MCP to Claude Code?

Run claude mcp add --env 'PENTAGONAL_API_KEY=<YOUR_PENTAGONAL_API_KEY>' pentagonal-mcp -- npx -y pentagonal-mcp in your terminal. Add --scope user to make it available in every project.

How do I add Pentagonal MCP to Cursor?

Open ~/.cursor/mcp.json and add the server under mcpServers, using the Cursor config shown in the install section above.

What tools does Pentagonal MCP provide?

It exposes 7 tools, including pentagonal_lookup, pentagonal_audit, pentagonal_generate, pentagonal_fix, pentagonal_compile.

Which blockchains are supported?

The server supports Ethereum, Base, Polygon, Arbitrum, Optimism, BSC, Avalanche, and Solana.

What tools are available for free?

You can use the fix, compile, lookup, rules, and chains tools for free, though they are rate limited.

How much does a security audit cost?

A security audit costs $5, which can be paid using credits or x402.

How do I get an API key?

Facts

Nov 15, 2026

Stars: 1
Downloads, 30 days: —
Latest version: 1.0.1
Last commit: Jul 27, 2026
License: MIT
Transport: stdio
Package: pentagonal-mcp

Pentagonal-ai ↗

Community publisher

Published by an independent maintainer.

Alternatives

Works with

Claude Code Cursor VS Code Claude Desktop Codex Gemini CLI Windsurf Devin

Badge for your README

Show your HostedMCP checks score. The badge links readers to install instructions for every client.

[![HostedMCP checks](https://api.hostedmcp.org/v1/badge/server/pentagonal-ai/pentagonal-mcp.svg)](https://hostedmcp.org/servers/pentagonal-ai/pentagonal-mcp/checks)

Maintainer?

Claim this listing to edit it and add the HostedMCP badge to your README.

Claim listing

Before you install

Servers run with the permissions you give them. Use the narrowest token or database role that does the job.

Pentagonal MCP server

What is Pentagonal MCP?

About Pentagonal MCP server

What you can do with it

How to install Pentagonal MCP

Pentagonal MCP tools 7

Configuration

Automated checks

README

pentagonal-mcp

Tools

Setup

Claude Desktop (stdio)

Claude Code / Cursor / Windsurf (HTTP)

Get an API Key

Payment Options

Links

License

Pentagonal MCP questions

Pentagonal MCP server

What is Pentagonal MCP?

About Pentagonal MCP server

What you can do with it

How to install Pentagonal MCP

Pentagonal MCP tools 7

Configuration

Automated checks

README

pentagonal-mcp

Tools

Setup

Claude Desktop (stdio)

Claude Code / Cursor / Windsurf (HTTP)

Get an API Key

Payment Options

Links

License

Pentagonal MCP questions

Pentagonal MCP server

What is Pentagonal MCP?

About Pentagonal MCP server

What you can do with it

How to install Pentagonal MCP

Install Pentagonal MCP in Claude Code

Install Pentagonal MCP in Cursor

Install Pentagonal MCP in VS Code

Install Pentagonal MCP in VS Code CLI

Install Pentagonal MCP in Claude Desktop

Install Pentagonal MCP in Codex

Install Pentagonal MCP in Codex config.toml

Install Pentagonal MCP in Gemini CLI

Install Pentagonal MCP in Gemini settings.json

Pentagonal MCP tools 7

Configuration

Automated checks

README

pentagonal-mcp

Tools

Setup

Claude Desktop (stdio)

Claude Code / Cursor / Windsurf (HTTP)

Get an API Key

Payment Options

Links

License

Pentagonal MCP questions

Pentagonal MCP server

What is Pentagonal MCP?

About Pentagonal MCP server

What you can do with it

How to install Pentagonal MCP

Install Pentagonal MCP in Claude Code

Install Pentagonal MCP in Cursor

Install Pentagonal MCP in VS Code

Install Pentagonal MCP in VS Code CLI

Install Pentagonal MCP in Claude Desktop

Install Pentagonal MCP in Codex

Install Pentagonal MCP in Codex config.toml

Install Pentagonal MCP in Gemini CLI

Install Pentagonal MCP in Gemini settings.json

Pentagonal MCP tools 7

Configuration

Automated checks

README

pentagonal-mcp

Tools

Setup

Claude Desktop (stdio)

Claude Code / Cursor / Windsurf (HTTP)

Get an API Key

Payment Options

Links

License

Pentagonal MCP questions