Koskamo

ReasonGate MCP

ReasonGate is a self-hostable gate that inspects text going into and out of an LLM and returns an explainable allow / flag / block decision with a machine-readable audit record for every call. It uses a rule-based pipeline to recognize known prompt-injection and jailbreak phrasings, de-obfuscate common evasions, scan tool output for indirect injection, and check model output for leaked secrets.

Package and access

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

ReasonGate MCP logo, by cgrtmlCommunity listingLocal stdioSource reviewed; not executedPublished by cgrtml
Vendor documentation

What you can do with it

  • Block prompt injection attacks
  • Detect indirect injection in tool outputs
  • Check model output for leaked secrets

Source and maintenance

Community listingRegistry 0.7.0
mcp-registry: io.github.cgrtml/reasongate@0.7.0Source repositoryProject website
Maintenance checked

Packages and installation

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

reasongate 0.7.0

pypiuvx
reasongate package definition
{
  "version": "0.7.0",
  "transport": "stdio",
  "identifier": "reasongate",
  "runtimeHint": "uvx",
  "registryType": "pypi",
  "registryBaseUrl": "https://pypi.org",
  "packageArguments": [
    {
      "type": "positional",
      "value": "--",
      "description": "Separates gateway options from the wrapped server command."
    },
    {
      "type": "positional",
      "valueHint": "server_command",
      "isRepeated": true,
      "isRequired": true,
      "description": "The MCP server to run behind the gate, e.g. npx -y @modelcontextprotocol/server-filesystem /path"
    }
  ]
}

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": {
    "reasongate-mcp": {
      "command": "uvx",
      "args": [
        "reasongate==0.7.0",
        "--"
      ]
    }
  }
}

Cline

Merge this local stdio configuration, replace every placeholder environment value, and restart Cline. Koskamo has not executed this package.
Cline configuration
{
  "mcpServers": {
    "reasongate-mcp": {
      "command": "uvx",
      "args": [
        "reasongate==0.7.0",
        "--"
      ]
    }
  }
}

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": {
    "reasongate-mcp": {
      "type": "stdio",
      "command": "uvx",
      "args": [
        "reasongate==0.7.0",
        "--"
      ]
    }
  }
}

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": {
    "reasongate-mcp": {
      "command": "uvx",
      "args": [
        "reasongate==0.7.0",
        "--"
      ]
    }
  }
}

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