Umbryn MCP Server

by rinava Your server? Claim it

local only

Umbryn MCP runs on your own machine — the client starts it, so there is no endpoint to ping. 87 installs a week from pypi. Last commit 14 Aug 2026.

Redacts PII/PHI from text before it reaches an LLM. Fail-closed, self-hosted, no egress.

Installs per day peak 34 · avg 17 · -44% w/w

a month agotoday

Installs / week

pypi · umbryn-mcp

Stars

4 open issues

14 Aug 2026

Last commit

from GitHub

MIT

License

Python

Nothing serious here today

Today is the operative word: we check Umbryn MCP every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

Connect this server

This server runs on your own machine — install it with the package manager and the client starts it for you. Package name taken from the official registry entry.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add umbryn-mcp -- uvx umbryn-mcp

~/Library/Application Support/Claude/claude_desktop_config.json

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

~/.codex/config.toml

[mcp_servers.umbryn-mcp]
command = "uvx"
args = ["umbryn-mcp"]

.cursor/mcp.json

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

.vscode/mcp.json

{
  "servers": {
    "umbryn-mcp": {
      "type": "stdio",
      "command": "uvx",
      "args": [
        "umbryn-mcp"
      ]
    }
  }
}

Optional settings from the registry entry, left out of the block above: UMBRYN_ENGINE (Detection engine: auto (default), regex, or presidio), UMBRYN_MIN_CONFIDENCE (Trust threshold (0-1); detections below it fail closed. Default 0.5), UMBRYN_DETECTION_FLOOR (Sensitivity floor (0-1); below this a signal is noise. Default 0.35).

Alternatives to Umbryn MCP

same job, measured the same way

Redact

by eleyed

Redact PII from text before it reaches a model. Nothing stored, no third-party AI.

answering

LLM Data Guard: PII & Secrets Redaction

by fairquery

Detect and redact PII and secrets (API keys, tokens) in text, HTML or PDF before it reaches an LLM.

answering

SafePrompt

by safeprompt

Detect prompt injection, jailbreaks, and code injection in untrusted text before it reaches an LLM.

254 installs/wk 2 tools answering

Lovec

by lovec-tech

Prompt-injection detector for untrusted text before it reaches an LLM (RU/EN). BYO lovec.tech key.

79 installs/wk local only

Deliverd Screen

by deliverd-dev

Find and redact personal data and secrets in text before it reaches a model. Local, no account.

300 installs/wk local only

Strac MCP DLP

by strac-io

Detect and redact PII, PHI, PCI and secrets in text and files before an AI agent sees them.

90 installs/wk local only

Pii Redact

by x402supply

Detects and redacts PII (emails, phones, SSNs, names, addresses) from text. $0.02/call via x402.

1 tools answering

LeakGuard

by youraitools

Find and redact leaked secrets, wallet keys and PII before an AI agent sends text.

281 installs/wk 1 tools answering

Umbryn MCP — questions

Answers built from our own checks of this server.

Why is there no uptime for Umbryn MCP?

Umbryn MCP runs on your own machine over stdio — there is no network address to reach, so uptime cannot be measured for it by anyone. What can be measured is adoption: the pypi package umbryn-mcp was installed 87 times last week.

How do I connect Umbryn MCP?

Copy the ready config from this page. We generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each in the form that client actually reads. It runs locally, so the command pulls umbryn-mcp straight from pypi; nothing to host, nothing to sign up for.

How many people use Umbryn MCP?

The pypi package umbryn-mcp was installed 87 times in the last week. Week over week that is -44%. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.

Is Umbryn MCP open source?

Yes — it is published under the MIT licence, written in Python, 0 stars on GitHub and 4 open issues. The source link is on this page, so you can read exactly what it does with your data before you connect it.