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Working days
An MCP tool from the Calculators server, hosted on mcp.hjlabs.in.
Count working days (Monday to Friday) between two dates, skipping any holidays you list, or find the date a number of working days after a start date.
Name on the gateway: math__working_days · read-only.
Parameters
| Name | Type | Description |
|---|---|---|
from required | string | Start date, ISO or "today". |
to | string | End date (inclusive). Give this OR add_days. |
add_days | integer | Working days to add to `from` instead of counting to `to`. |
holidays | array | ISO dates to skip, e.g. ["2025-12-25"]. |
How to call it
Through the Smart Gateway, any client can run it by name with call_tool, or let the gateway find it with search_tools:
{
"name": "math__working_days",
"arguments": {
"from": "…"
}
}Or connect the Calculators server directly, which lists 28 tools including this one:
claude mcp add --transport http hj-math https://mcp.hjlabs.in/mcp/math \
--header "Authorization: Bearer YOUR_API_KEY"Try asking
Use the working days tool with from set to ….