MCP Server

RPN Calculator MCP Server

com.apished/rpn-calculator

What is the RPN Calculator MCP server?

Evaluates Reverse Polish Notation (postfix) expressions: arithmetic, trig, logs, bitwise ops.

Copy-paste configuration for popular MCP clients.

transport: http

Config generated by PluginBench — verify against the source before use.

~/.cursor/mcp.json

{
  "mcpServers": {
    "rpn-calculator": {
      "url": "https://apished.com/mcp/v1/rpncalc"
    }
  }
}

Exact character/word counting, reversal, palindrome checks, indexing, sorting; Unicode-safe.

Counts tokens under OpenAI-compatible (tiktoken) encodings, by model or encoding name.

Validates PESEL/NIP/REGON/IBAN/Luhn/ISBN/EAN/BIC/VAT; RPN, dates, hash, tokens, random, encode, time

Validates Luhn, IBAN, ISBN, EAN/UPC, SWIFT/BIC, and EU VAT checksums and formats.

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