TokenOS Smart Contract Audit MCP MCP server

A read-only MCP server that performs heuristic security scans on Solidity and Solana (Anchor/Rust) smart contracts. It identifies vulnerabilities such as reentrancy, missing access control, and unchecked arithmetic, providing line numbers, severity levels, fixes, and an overall letter grade. The service analyzes code in memory without storage and uses public RPC endpoints for gas and price data.

Endpoint and access

No sign-in: your client connects and lists tools immediately, with no account or key.

No sign-inEndpoint checked 2026-10-05Operated by TokenOS

MCP endpoint (Streamable HTTP)

https://tokenos.ai/api/mcp/apps/contract-audit

Vendor documentation

What you can do with it

Scan Solidity contracts for reentrancy and access control issues
Audit Solana Anchor programs for missing signer or PDA bump checks
Check ERC-20 tokens for unchecked arithmetic and weak randomness
Generate a security letter grade and fix recommendations for smart contracts

Tools advertised by the last live check:

quick_audit

Connect from your client

Each snippet registers the same endpoint; pick the client you use.

This server is operated by the named third party. Listing and endpoint checks are not an endorsement or a security audit. Review the operator's permissions, terms, and data handling before connecting. How listings are checked and corrected.

Claude Code

Run this once in a terminal. It registers a Streamable HTTP server. Use --scope project to write .mcp.json for the repo.

Claude Code configuration

claude mcp add --transport http tokenos-smart-contract-audit-mcp https://tokenos.ai/api/mcp/apps/contract-audit

Codex

Run this once. Codex stores MCP servers in ~/.codex/config.toml (or .codex/config.toml in a trusted project).

Codex configuration

codex mcp add tokenos-smart-contract-audit-mcp --url https://tokenos.ai/api/mcp/apps/contract-audit

Cursor

Merge this server into .cursor/mcp.json in your project, then enable tokenos-smart-contract-audit-mcp in your MCP settings.

Cursor configuration

{
  "mcpServers": {
    "tokenos-smart-contract-audit-mcp": {
      "url": "https://tokenos.ai/api/mcp/apps/contract-audit"
    }
  }
}

Cline

Merge this into cline_mcp_settings.json (Cline → MCP Servers → Configure). The type must be streamableHttp for a remote HTTP server.

Cline configuration

{
  "mcpServers": {
    "tokenos-smart-contract-audit-mcp": {
      "type": "streamableHttp",
      "url": "https://tokenos.ai/api/mcp/apps/contract-audit",
      "disabled": false
    }
  }
}

VS Code

Merge this server into .vscode/mcp.json. Use MCP: List Servers to start tokenos-smart-contract-audit-mcp and inspect its tools.

VS Code configuration

{
  "servers": {
    "tokenos-smart-contract-audit-mcp": {
      "type": "http",
      "url": "https://tokenos.ai/api/mcp/apps/contract-audit"
    }
  }
}

Gemini CLI

Run this once. It writes .gemini/settings.json in the current project; pass --scope user for ~/.gemini/settings.json.

Gemini CLI configuration

gemini mcp add --transport http tokenos-smart-contract-audit-mcp https://tokenos.ai/api/mcp/apps/contract-audit

Claude Desktop

Merge this into claude_desktop_config.json (macOS: ~/Library/Application Support/Claude/, Windows: %APPDATA%\Claude\), then restart Claude Desktop.

Claude Desktop configuration

{
  "mcpServers": {
    "tokenos-smart-contract-audit-mcp": {
      "url": "https://tokenos.ai/api/mcp/apps/contract-audit"
    }
  }
}

Windsurf

Merge this into ~/.codeium/windsurf/mcp_config.json, then refresh MCP in Cascade. Windsurf remote servers use serverUrl, not url.

Windsurf configuration

{
  "mcpServers": {
    "tokenos-smart-contract-audit-mcp": {
      "serverUrl": "https://tokenos.ai/api/mcp/apps/contract-audit"
    }
  }
}

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