Verified Numbers for Claude Code

io.github.jfortier93/verified-numbers-mcp

Current source-cited 2026 US tax constants and calculators for AI agents; every answer cites IRS.

client:Claude Code transport:streamable-http

Install Verified Numbers in Claude Code

run in your project directory

claude mcp add --transport http verified-numbers-mcp https://verified-numbers.mcpize.run

Adds it for this project only. Append --scope user to make it available everywhere. Claude Code docs