Calc Mcp
Give your coding agent dependable math, date, encoding, and hashing helpers without flaky LLM arithmetic.
Overview
calc-mcp is an MCP server for the Build phase that exposes 21 deterministic tools for math, dates, encoding, hashing, and randomness inside your agent.
What is this MCP server?
- 21 deterministic MCP tools for math, randomness, dates, encoding, and hashing
- stdio transport via npm package @coo-quack/calc-mcp (v2.0.1)
- Accurate results for pricing logic, IDs, checksums, and date math in agent workflows
- No external API key—local npm install and register in MCP config
- Complements codegen skills; does not replace domain-specific business logic
- 21 MCP tools documented in server metadata
- Package version 2.0.1 on npm as @coo-quack/calc-mcp
- Transport: stdio
Community signal: 8 GitHub stars.
What problem does it solve?
Agents often get math, dates, and encodings wrong when they reason in plain text, which breaks pricing, scheduling, and ID logic in real products.
Who is it for?
Indie builders who want a zero-API-key utility layer for calculations and transforms during agent-assisted coding.
Skip if: Teams that need spreadsheet modeling, symbolic CAS, or compliance-grade crypto without reviewing tool behavior themselves.
What do I get? / Deliverables
After you add calc-mcp to MCP, your agent can call accurate tool-backed operations instead of approximating numbers and transforms in the chat.
- 21 callable MCP tools for math, dates, randomness, encoding, and hashing
- Local stdio integration without third-party API keys
Recommended MCP Servers
Journey fit
Utility MCP servers belong on the Build shelf because they extend what agents can do while you implement features and scripts. Agent-tooling is the canonical home for stdio MCP servers that add callable tools to Claude Code, Cursor, and similar clients.
How it compares
MCP tool integration for deterministic compute, not an agent skill or cloud LLM plugin.
Common Questions / FAQ
Who is calc-mcp for?
Solo and indie developers using Claude Code, Cursor, Codex, or Windsurf who want reliable math and encoding tools on tap during builds.
When should I use calc-mcp?
Use it whenever an agent workflow needs exact arithmetic, date handling, hashing, or encoding while you code agents, CLIs, or backend logic.
How do I add calc-mcp to my agent?
Install @coo-quack/calc-mcp from npm and register it as a stdio MCP server in your client’s MCP configuration pointing at the published package.