Koskamo

MCP Slim Guard

MCP Slim Guard provides context compression and authorization for Model Context Protocol hosts. It validates tool calls against original schemas before invocation, rejects unknown fields, and allows exact recovery of oversized results without re-invoking the upstream server. It supports multiple modes (Native, Compact, Extreme) to balance host surface area and token usage while maintaining security through allow/deny lists.

Package and access

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

MCP Slim Guard logo, by lennneyCommunity listingLocal stdioSource reviewed; not executedPublished by lennney
Vendor documentation

What you can do with it

  • Compress MCP context to reduce token usage
  • Validate tool calls against original schemas before invocation
  • Recover oversized results exactly without re-invoking upstream
  • Authorize access to specific upstream tools via allow/deny lists

Source and maintenance

Community listingRegistry 0.1.1-alpha.1
mcp-registry: io.github.lennney/mcp-slim-guard@0.1.1-alpha.1Source repository
Maintenance checked

Packages and installation

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

mcp-slim-guard 0.1.1-alpha.1

npm
mcp-slim-guard package definition
{
  "version": "0.1.1-alpha.1",
  "transport": "stdio",
  "identifier": "mcp-slim-guard",
  "registryType": "npm"
}

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.

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Cursor

Merge this local stdio configuration, replace every placeholder environment value, and restart Cursor. Koskamo has not executed this package.
Cursor configuration
{
  "mcpServers": {
    "mcp-slim-guard": {
      "command": "npx",
      "args": [
        "-y",
        "mcp-slim-guard@0.1.1-alpha.1"
      ]
    }
  }
}

Cline

Merge this local stdio configuration, replace every placeholder environment value, and restart Cline. Koskamo has not executed this package.
Cline configuration
{
  "mcpServers": {
    "mcp-slim-guard": {
      "command": "npx",
      "args": [
        "-y",
        "mcp-slim-guard@0.1.1-alpha.1"
      ]
    }
  }
}

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": {
    "mcp-slim-guard": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "mcp-slim-guard@0.1.1-alpha.1"
      ]
    }
  }
}

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": {
    "mcp-slim-guard": {
      "command": "npx",
      "args": [
        "-y",
        "mcp-slim-guard@0.1.1-alpha.1"
      ]
    }
  }
}

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