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21 MCP tools for math, randomness, dates, encoding, hashing, and more — deterministic and accurate.

Evaluate, simplify, and differentiate mathematical expressions.

Tax calculators for US, UK, Canada, Australia: income tax, property tax, stamp duty.

List, search, and manage calendar events via macOS Calendar.app across all configured accounts.

MCP server for macOS Calendar.app — calendar and event management via AppleScript

Calibre ebook library server: search, read content, curate metadata, semantic search, gated writes.

MCP server for Callimachus: local index and search of your AI coding-agent threads

Static preflight safety gate for MCP servers — scan configs before you run them. Never executes.

One MCP tool contract for telephony — any call provider, hosted, local, or BYOK.

Read-only x402 payment diagnostics: diagnose, evidence, explain, recover, resolve, status. Zero deps

Anti-detection browser automation with Camoufox - stealth Firefox for web scraping

Campaign Manager 360 management — CRUD, Floodlight tracking, async reporting, and targeting