Bastion (gowthaman90) MCP Server

A reliability & security proxy for the Model Context Protocol (MCP). _Self-healing connections, runtime tool-security, and a compliance-mapped audit trail for your MCP servers._. It runs locally over stdio via the published package.

People connecting security tools to Claude, Cursor, VS Code, or another MCP client. The project is written in TypeScript.

VERIFIED ACTIVE

LAST COMMIT 2026-08-03 · ★ 6 · #58 OF 182 MAINTAINED SECURITY · VERIFIED 2026-08-25

Apache-2.0 · TypeScript servers · how we verify → /methodology

01 · Install Bastion (gowthaman90)

Claude Code

claude mcp add gowthaman90-mcp-bastion -- npx -y mcp-bastion

Claude Desktop / Cursor / VS Code - add to config

{
  "mcpServers": {
    "gowthaman90-mcp-bastion": {
      "command": "npx",
      "args": [
        "-y",
        "mcp-bastion"
      ]
    }
  }
}

Same JSON for Cursor. For VS Code, rename the top-level key from `mcpServers` to `servers`.

Using another client? Same JSON, different key

Claude Desktop · mcpServers

Cursor · mcpServers

VS Code · servers

Windsurf · mcpServers

Zed · context_servers

Cline · mcpServers

Roo Code · mcpServers

Continue · mcpServers

LibreChat · mcpServers

Gemini CLI · mcpServers

Codex CLI · mcp_servers

Full setup guides: every client.

02 · Evidence

Security posture

What to check before giving this server access to your agent - from the registry, GitHub, and our own probes. We don't score safety; we show what's verifiable.

runs as local process (stdio) - runs on your machine with your user's permissions

repo age created 2026-07-08 - young repo, little track record yet

license Apache-2.0 - declared in the repository

npm package mcp-bastion - unscoped; check the name against the project README before installing

registry namespace io.github.Gowthaman90 is GitHub-verified and matches the repo owner

03 · What Bastion (gowthaman90) can do

Prose above is summarized from the project's README and registry record - no invented capabilities.

Latest releases

v0.4.0 · 2026-07-15

Cross-tool correlation - detects poisoning payloads split across multiple tools to evade single-tool scanning (threshold "split-payload" poisoning, e.g. ShareLock, arXiv:2606.27027). Because bastion sees a server's…

v0.3.1 · 2026-07-14

the CLI and MCP handshake now report the correct version (was pinned at an older value via a hardcoded constant). A test now asserts BASTION_VERSION matches package.json so it can't drift again. No functional changes…

v0.3.0 · 2026-07-13

Four new proxy-native security layers, each verified by mcp-defense-bench - measured coverage of the 22-vector MCP attack surface rose from 18% to 34%, at zero false positives. · Response scanning - inspect tool…

04 · Who maintains Bastion (gowthaman90)

mcp-bastion is maintained by gowthaman90. It's the only MCP server we track from this author; the repo dates to Jul 2026.

05 · Facts

repository: github.com/gowthaman90/mcp-bastion
category: security - ranked #58 of 182 actively-maintained security servers as of 2026-08-25.
release cadence: 5 releases in the last 90 days (latest 2026-07-15)
registry: io.github.Gowthaman90/mcp-bastion (active, first published 2026-07-16)
packages: npm:mcp-bastion

06 · Bastion (gowthaman90) FAQ

What is Bastion (gowthaman90)?

Is Bastion (gowthaman90) still maintained?

Yes - as of 2026-08-25, its last commit was 2026-08-03 and it shipped 5 releases in the last 90 days. We re-verify nightly.

How do I install Bastion (gowthaman90)?

Run `npx -y mcp-bastion`. You can also paste the ready-made client config above.

Does Bastion (gowthaman90) run locally?

Yes - it's a stdio server: it runs on your machine (via npx) with your user's permissions. Your data stays local unless the server itself calls external APIs.

07 · Alternatives to Bastion (gowthaman90)

Alternatives to Bastion (gowthaman90)

Maintained security servers if Bastion (gowthaman90) isn't the fit.

Pairs well with

Servers that cover what Bastion (gowthaman90) doesn't - only shown when the pairing reason fits the companion.

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