Koskamo

MCP Compliance

An open-source CLI and MCP server that tests any MCP server against the specification to verify compliance. It runs 88 tests across eight categories including transport, lifecycle, tools, resources, prompts, error handling, schema validation, and security. The tool returns an A-F letter grade based on a weighted score of required and optional tests, supporting both HTTP endpoints and stdio servers. It provides interfaces for human use via CLI, AI assistants via MCP tools, and programmatic integration.

Visit Yaw Labs

Package and access

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

MCP Compliance logo, by Yaw LabsCommunity listingLocal stdioSource reviewed; not executedPublished by Yaw Labs
You need:No API key needed
Vendor documentation

Checks and signals

Each line is separate evidence, not a trust score.

  • Popularity 2 GitHub stars

What you can do with it

  • Run compliance suite against a staging MCP endpoint to get a grade
  • Explain specific test IDs and the spec sections they validate
  • Filter tests by category such as transport or security
  • Integrate compliance testing into CI pipelines with strict mode

Source and maintenance

Community listingRegistry 0.21.1MIT
mcp-registry: io.github.YawLabs/mcp-compliance@0.21.1Source repositoryProject website
Last repository push
Latest release
v0.21.1
Maintenance checked

Packages and installation

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

@yawlabs/mcp-compliance 0.21.1

npm
@yawlabs/mcp-compliance package definition
{
  "version": "0.21.1",
  "transport": "stdio",
  "identifier": "@yawlabs/mcp-compliance",
  "registryType": "npm"
}

Tools

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

No tool definitions available.

Maintenance history

Public check and source-refresh events. Editorial and ownership records remain private.

  • · repository · passed · metadata changed · updated
  • · backfill · recorded · Pre-expansion baseline; unobserved rich metadata remains unknown

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": {
    "mcp-compliance": {
      "command": "npx",
      "args": [
        "-y",
        "@yawlabs/mcp-compliance@0.21.1"
      ]
    }
  }
}

Cline

Merge this local stdio configuration, replace every placeholder environment value, and restart Cline. Koskamo has not executed this package.
Cline configuration
{
  "mcpServers": {
    "mcp-compliance": {
      "command": "npx",
      "args": [
        "-y",
        "@yawlabs/mcp-compliance@0.21.1"
      ]
    }
  }
}

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-compliance": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@yawlabs/mcp-compliance@0.21.1"
      ]
    }
  }
}

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-compliance": {
      "command": "npx",
      "args": [
        "-y",
        "@yawlabs/mcp-compliance@0.21.1"
      ]
    }
  }
}

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