Skip to main content
Version: 0.7.2

MCP-004 Missing Tool Description

Summary​

  • Rule ID: MCP-004
  • Severity: HIGH
  • Category: MCP
  • Normative Level: SHOULD
  • Verified On: 2026-02-04

Applicability​

  • Tool: all
  • Version Range: unspecified
  • Spec Revision: 2025-06-18

Evidence Sources​

Test Coverage Metadata​

  • Unit tests: true
  • Fixture tests: true
  • E2E tests: false

Examples​

The following examples are illustrative snippets for this rule category.

Invalid​

{
  "jsonrpc": "1.0",
  "tools": []
}

Valid​

{
  "jsonrpc": "2.0",
  "tools": [
    {
      "name": "validate_file",
      "description": "Validate one configuration file",
      "inputSchema": {"type": "object"}
    }
  ]
}