tilwhen date engine for Claude.ai

com.tilwhen/tilwhen

Deterministic date arithmetic with auditable receipts: business days, due dates, holidays.

client:Claude.ai transport:streamable-http tools:9

Install tilwhen date engine in Claude.ai

Settings → Connectors → Add custom connector

https://mcp.tilwhen.com/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

parse_date_query
add_days
subtract_days
days_between
business_days
invoice_due
next_occurrence
holidays
explain

tilwhen date engine in other clients

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

tilwhen date engine MCP server