Mcp Validator

MCP Validator is a professional validation and compliance testing tool for Model Context Protocol (MCP) servers.
It ensures your MCP server’s tools, resources, prompts, and templates are correct, compliant, and production-ready.

✅ Run it directly on Apify – no setup, no infrastructure.
✅ Get structured validation reports you can share with your team or integrate into workflows.
✅ Catch schema errors, protocol issues, and performance bottlenecks before they hit production.

🚀 Why Choose MCP Validator?

If you’re building an MCP server, you need confidence that it:

• Correctly exposes tools, resources, prompts, and templates.
• Accepts valid inputs and rejects invalid ones with proper errors.
• Returns data in the right schema format every time.
• Stays reliable and responsive in production environments.

👉 MCP Validator does all this for you automatically.
No manual testing. No guesswork. Just clear reports you can trust.

✨ Key Features

• 🔍 Automatic Discovery – connect to your MCP server and fetch all exposed tools, resources, and prompts.
• 🛠 Tool Validation – validate input/output schemas, run sample calls, and verify error handling.
• 📚 Resource Validation (...upcoming) – test resource reads, pagination, and schema compliance.
• 📝 Prompt & Template Checks (...upcoming) – validate placeholders, substitutions, and template structure.
• 📊 Structured Reports – detailed JSON/CSV outputs for compliance or CI/CD use.

The scraped data in this template are page headings but you can easily edit the code to scrape whatever you want from the page.

📊 MCP Server Config Example

sse server

{
  "type": "sse",
  "url": "https://mcp.api.coingecko.com/sse"
}

mcp server

{
  "type": "httpStream",
  "url": "http://mcp.api.coingecko.com"
}

stdio server

{
  "type": "stdio",
  "options": {
    "command": "python3",
    "args": ["app.py", "--port", 8080],
    "env": {
      "LOG_LEVEL": "info",
      "API_KEY": "my_secret_key"
    }
  }
}

📊 Auth Setup

no auth setup

{
  "auth": {
    "type": "none"
  }
}

basic auth setup

{
  "auth": {
    "type": "basic",
    "username": "basic_auth_user",
    "password": "basic_auth_password"
  }
}

Bearar api_token auth setup

{
  "auth": {
    "type": "token",
    "token": "huze_api_token"
  }
}

📊 Test Tool Calls

no schema validation

{
  "testCases": [
    {
      "name": "get_new_coins_list",
      "arguments": {},
      "actions": {
        "validate_input_schema": false,
        "validate_output_schema": false,
        "match_output_data": false
      }
    }
  ]
}

input and output schema validation

{
  "testCases": [
    {
      "name": "get_new_coins_list",
      "arguments": {},
      "actions": {
        "validate_input_schema": true,
        "validate_output_schema": true,
        "match_output_data": false
      },
      "input_schema": {},
      "output_schema": {}
    }
  ]
}

output object matcher

{
  "testCases": [
    {
      "name": "get_new_coins_list",
      "arguments": {},
      "actions": {
        "validate_input_schema": false,
        "validate_output_schema": false,
        "match_output_data": true
      },
      "expected_output": {}
    }
  ]
}

📊 Example Report Output

{
  metadata: {
    validator_version: 'v0.1',
    timestamp: '2025-10-06T14:39:24.164Z',
    server_type: 'sse',
    server_url: 'https://mcp.api.coingecko.com/sse',
    latency: 118,
    overall_status: 'PASS'
  },
  summary: {
    total_tools: 46,
    total_resources: 0,
    total_prompts: 0,
    total_templates: 0,
    warnings: 0,
    passed: 0,
    failed: 0
  },
  lists: {
    tools: [
      'get_asset_platforms',
      'get_id_coins',
      'get_list_coins_categories',
      'get_new_coins_list',
      'get_coins_markets',
      'get_coins_top_gainers_losers'
    ],
    resources: [],
    prompts: [],
    templates: []
  },
  tools: [
    {
      name: 'translate_text',
      status: 'PASS',
      schema_validation: [Object],
      test_cases: [Object],
      errors: {}
    }
  ],
  errors: []
}

⚡ How It Works

• Deploy MCP Validator from Apify Marketplace
• Provide your MCP server URL and optional test cases.
• The validator connects, discovers tools/resources/prompts, and runs validation checks.
• Get a structured report (JSON/CSV/text) with pass/fail results.

💡 Use Cases

• ✅ Developers – catch schema errors before deployment.
• ✅ QA Teams – validate compliance across staging & production.
• ✅ Enterprises – ensure reliable MCP integrations at scale.
• ✅ Audits & Compliance – provide proof your server matches MCP spec.

🛠 Plans & Availability

• Flat $10/Month Coffee Bill → Run ad-hoc validations, view JSON/CSV reports. Available exclusively on Apify Marketplace.

📞 Support

Need help or a custom feature? 📧 Contact us at support@mcp-validator.com (or via Apify support).