Edge Case MCP Server

MCP STDIO server optimized for testing edge cases and unusual scenarios.

Tools

unicode_tool - Returns Unicode text including emojis and right-to-left characters
binary_data - Returns binary-like data in various encodings (base64, hex, raw)
empty_response - Returns various types of empty responses (empty string, object, array, null)
null_fields - Returns responses with configurable null fields
deeply_nested - Returns deeply nested data structures up to specified depth
special_chars - Returns text with special characters (quotes, backslashes, newlines, control chars)
zero_length - Returns zero-length content
extreme_sizes - Returns data of various extreme sizes (tiny, normal, huge)

Usage

# Install dependencies
npm install

# Build
npm run build

# Run
node dist/index.js

Integration Testing

This server is designed to test edge case handling in Bifrost's MCP integration via STDIO transport.

Example Tool Calls

// Test Unicode handling
{
  "name": "unicode_tool",
  "arguments": {
    "id": "test-1",
    "include_emojis": true,
    "include_rtl": true
  }
}

// Test binary data
{
  "name": "binary_data",
  "arguments": {
    "id": "test-2",
    "encoding": "base64"
  }
}

// Test deeply nested structures
{
  "name": "deeply_nested",
  "arguments": {
    "id": "test-3",
    "depth": 20
  }
}

// Test special characters
{
  "name": "special_chars",
  "arguments": {
    "id": "test-4",
    "char_type": "all"
  }
}