Tax Numbers for Claude.ai

app.openkrill/tax

Get the US federal tax numbers right, with the IRS document each one comes from.

client:Claude.ai transport:streamable-http tools:7

Install Tax Numbers in Claude.ai

Settings → Connectors → Add custom connector

https://tax.openkrill.app/mcp

Claude on the web takes a remote URL and completes OAuth in the browser. For a packaged server use Claude Desktop or Claude Code instead. Claude.ai docs

What Claude.ai can do once it is connected

get_tax_parameters
get_mileage_rate
tax_deadlines
estimate_federal_tax
submit_feedback
get_feedback_reply
index_tools

Tax Numbers in other clients

Claude Code
Claude Desktop
Cursor
VS Code
Zed
Windsurf
Cline
Gemini CLI
Grok
ChatGPT
LangChain

Tax Numbers MCP server