Redact MCP

An MCP server (and Claude Code plugin) that automatically detects and obfuscates sensitive data before Claude ever sees it. Uses regex pattern matching and AI-powered Named Entity Recognition (NER) to catch IPs, hostnames, emails, API keys, person names, organization names, locations, private keys, connection strings, and more. It runs locally over stdio via the published package.

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

VERIFIED ACTIVE

LAST COMMIT 2026-03-23 · ★ 6 · #51 OF 75 MAINTAINED EMAIL · VERIFIED 2026-08-25

JavaScript servers · how we verify → /methodology

01 · Install Redact MCP

before you install - you'll need

Set REDACT_DATA_DIR, REDACT_AUDIT_LOG before connecting.

Claude Code

claude mcp add r3352-redact-mcp -- npx -y @mattzam/redact-mcp

Claude Desktop / Cursor / VS Code - add to config

{
  "mcpServers": {
    "r3352-redact-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@mattzam/redact-mcp"
      ]
    }
  }
}

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

license no standard license detected - usage rights unclear; check the repo before commercial use

npm package @mattzam/redact-mcp - the @mattzam scope differs from the repo owner (r3352); confirm it's the project's official package

registry namespace io.github.r3352 is GitHub-verified and matches the repo owner

03 · What Redact MCP can do

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

Latest releases

v2.0.4 · 2026-03-23

Publish to MCP Registry - automatic PII obfuscation for Claude Code

04 · Who maintains Redact MCP

Redact MCP is maintained by r3352. It's the only MCP server we track from this author; the repo dates to Mar 2026.

05 · Facts

repository: github.com/r3352/redact-mcp
website: https://github.com/r3352/redact-mcp
category: email - ranked #51 of 75 actively-maintained email servers as of 2026-08-25.
registry: io.github.r3352/redact-mcp (active, first published 2026-03-23)
packages: npm:@mattzam/redact-mcp

06 · Redact MCP FAQ

What is Redact MCP?

Is Redact MCP still maintained?

Yes - as of 2026-08-25, its last commit was 2026-03-23. We re-verify nightly.

How do I install Redact MCP?

Run `npx -y @mattzam/redact-mcp`. The README documents 2 environment variables (REDACT_DATA_DIR, REDACT_AUDIT_LOG) to set first. Set REDACT_DATA_DIR, REDACT_AUDIT_LOG before connecting. You can also paste the ready-made client config above.

Does Redact MCP 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 Redact MCP

Alternatives to Redact MCP

Maintained email servers if Redact MCP isn't the fit.

More email MCP servers · Outlook · IntoDNS.ai DNS & Email Security Scanner · Forge MCP · Email Inbox API + Sending by Sendmux · AI

More JavaScript MCP servers · Doc Guard · Korean Secondary Learning Map MCP · Agentmap · Reachpad MCP · Remoet MCP · see all