slither-mcp

by trailofbits · Developer Tools · ★ 98

slither-mcp is an MCP server by trailofbits. MCP server for Slither static analysis of Solidity smart contracts. It has 98 GitHub stars and ranks #569 of 2217 in Developer Tools by stars.

Category: Developer Tools
Author: trailofbits
GitHub stars: 98
This week: Tracking since 18 Oct 2026
Language: Python
License: AGPL-3.0 (open source)
Last update: 2026-05-19 (5 months ago)
Links: Source PyPI

ethereum
mcp
model-context-protocol
python
security
slither
smart-contracts
solidity
static-analysis

How to install slither-mcp

slither-mcp is published on PyPI as mseep-slither-mcp, and it depends on mcp. These steps assume it runs as a local stdio server, which is the usual setup.

Check the README. Confirm the start command and note any API keys or environment variables it needs (pass them with -e KEY=value or an env block). You need uv for uvx.

Add it to Claude Code from a terminal:

claude mcp add slither-mcp -- uvx mseep-slither-mcp

Or add it to Cursor or Claude Desktop in .cursor/mcp.json or claude_desktop_config.json:

{
  "mcpServers": {
    "slither-mcp": {
      "command": "uvx",
      "args": [
        "mseep-slither-mcp"
      ]
    }
  }
}

Restart the client and check it. Run claude mcp list, or open the client's MCP settings, and confirm slither-mcp and its tools are listed. The install guide covers VS Code and Codex.

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Frequently asked questions

What is slither-mcp?

slither-mcp is an MCP server by trailofbits in the Developer Tools category. MCP server for Slither static analysis of Solidity smart contracts. It has 98 GitHub stars and ranks #569 of 2217 in Developer Tools by stars. It is written in Python. It is licensed under AGPL-3.0. It was last updated 5 months ago.

Is slither-mcp free and open source?

Yes. slither-mcp is published under the AGPL-3.0 license, so you can run, modify and self-host it at no cost. If it connects to a paid service, that service's own pricing and API terms still apply. Check the repository for the exact license text before using it commercially.

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