umbryn-mcp

An open-source, self-hosted MCP server that redacts PII and PHI from text before it reaches an LLM. It provides three tools: redact to scrub sensitive values into reversible placeholders, restore to rehydrate results, and detect to identify entities. Designed for regulated domains, it operates fail-closed and requires zero egress.

Package and access

Local package with source-attributed installation metadata. Koskamo does not execute packages during review.

Community listingLocal stdioSource reviewed; not executedPublished by Rinava

Vendor documentation

What you can do with it

Redact PII/PHI from text before sending to LLM
Restore original text from redacted placeholders
Detect sensitive entities in healthcare text

Source and maintenance

Community listingRegistry 0.2.1

mcp-registry: io.github.Rinava/umbryn-mcp@0.2.1 Source repository

Maintenance checked: Nov 1, 2026, 6:05 AM UTC

Packages and installation

Source-provided package data. Koskamo has not executed or live-probed this package.

umbryn-mcp 0.2.1

pypi

umbryn-mcp package definition

{
  "version": "0.2.1",
  "transport": "stdio",
  "identifier": "umbryn-mcp",
  "registryType": "pypi",
  "environmentVariables": [
    {
      "name": "UMBRYN_ENGINE",
      "description": "Detection engine: auto (default), regex, or presidio"
    },
    {
      "name": "UMBRYN_MIN_CONFIDENCE",
      "description": "Trust threshold (0-1); detections below it fail closed. Default 0.5"
    },
    {
      "name": "UMBRYN_DETECTION_FLOOR",
      "description": "Sensitivity floor (0-1); below this a signal is noise. Default 0.35"
    }
  ]
}

Tools

Reported by the attributed source; not independently observed by Koskamo.

No tool definitions available.

Connect from your client

Each snippet configures the same source-provided package; replace placeholders before use.

This server is operated by the named third party. Listing and endpoint checks are not an endorsement or a security audit. Review the operator's permissions, terms, and data handling before connecting. How listings are checked and corrected.

Cursor

Merge this local stdio configuration, replace every placeholder environment value, and restart Cursor. Koskamo has not executed this package.

Cursor configuration

{
  "mcpServers": {
    "umbryn-mcp": {
      "command": "uvx",
      "args": [
        "umbryn-mcp==0.2.1"
      ],
      "env": {
        "UMBRYN_ENGINE": "<YOUR_UMBRYN_ENGINE>",
        "UMBRYN_MIN_CONFIDENCE": "<YOUR_UMBRYN_MIN_CONFIDENCE>",
        "UMBRYN_DETECTION_FLOOR": "<YOUR_UMBRYN_DETECTION_FLOOR>"
      }
    }
  }
}

Cline

Merge this local stdio configuration, replace every placeholder environment value, and restart Cline. Koskamo has not executed this package.

Cline configuration

{
  "mcpServers": {
    "umbryn-mcp": {
      "command": "uvx",
      "args": [
        "umbryn-mcp==0.2.1"
      ],
      "env": {
        "UMBRYN_ENGINE": "<YOUR_UMBRYN_ENGINE>",
        "UMBRYN_MIN_CONFIDENCE": "<YOUR_UMBRYN_MIN_CONFIDENCE>",
        "UMBRYN_DETECTION_FLOOR": "<YOUR_UMBRYN_DETECTION_FLOOR>"
      }
    }
  }
}

VS Code

Merge this local stdio configuration, replace every placeholder environment value, and restart VS Code. Koskamo has not executed this package.

VS Code configuration

{
  "servers": {
    "umbryn-mcp": {
      "type": "stdio",
      "command": "uvx",
      "args": [
        "umbryn-mcp==0.2.1"
      ],
      "env": {
        "UMBRYN_ENGINE": "<YOUR_UMBRYN_ENGINE>",
        "UMBRYN_MIN_CONFIDENCE": "<YOUR_UMBRYN_MIN_CONFIDENCE>",
        "UMBRYN_DETECTION_FLOOR": "<YOUR_UMBRYN_DETECTION_FLOOR>"
      }
    }
  }
}

Claude Desktop

Merge this local stdio configuration, replace every placeholder environment value, and restart Claude Desktop. Koskamo has not executed this package.

Claude Desktop configuration

{
  "mcpServers": {
    "umbryn-mcp": {
      "command": "uvx",
      "args": [
        "umbryn-mcp==0.2.1"
      ],
      "env": {
        "UMBRYN_ENGINE": "<YOUR_UMBRYN_ENGINE>",
        "UMBRYN_MIN_CONFIDENCE": "<YOUR_UMBRYN_MIN_CONFIDENCE>",
        "UMBRYN_DETECTION_FLOOR": "<YOUR_UMBRYN_DETECTION_FLOOR>"
      }
    }
  }
}

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