mcp-bastion

by Gowthaman90 · Developer Tools · ★ 7

mcp-bastion is an MCP server by Gowthaman90. Reliability & security proxy for the Model Context Protocol (MCP). Self-healing connections, runtime tool-poisoning/shadowing defense, and NIST AI RMF + OWASP LLM Top-10 audit trails for any MCP server. Works with Claude, Cursor, Cline, Windsurf. It has 7 GitHub stars and ranks #1408 of 2217 in Developer Tools by stars.

Category: Developer Tools
Author: Gowthaman90
GitHub stars: 7
This week: Tracking since 19 Oct 2026
Weekly downloads: 239
Language: TypeScript
License: Apache-2.0 (open source)
Last update: 2026-10-20 (4 days ago)
Links: Source npm

agentic
ai
ai-agents
ai-security
anthropic
claude
llm
llm-security
mcp
model-context-protocol
nist-ai-rmf
owasp
+8 more

How to install mcp-bastion

mcp-bastion is published on npm as mcp-bastion, and it is listed in the official MCP Registry. 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 Node.js for npx.

Add it to Claude Code from a terminal:

claude mcp add mcp-bastion -- npx -y mcp-bastion

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

{
  "mcpServers": {
    "mcp-bastion": {
      "command": "npx",
      "args": [
        "-y",
        "mcp-bastion"
      ]
    }
  }
}

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

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Frequently asked questions

What is mcp-bastion?

mcp-bastion is an MCP server by Gowthaman90 in the Developer Tools category. Reliability & security proxy for the Model Context Protocol (MCP). Self-healing connections, runtime tool-poisoning/shadowing defense, and NIST AI RMF + OWASP LLM Top-10 audit trails for any MCP server. Works with Claude, Cursor, Cline, Windsurf. It has 7 GitHub stars and ranks #1408 of 2217 in Developer Tools by stars.

Is mcp-bastion free and open source?

Yes. mcp-bastion is published under the Apache-2.0 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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