Zero-signup business-day date-math API: add days, count days between dates, is-business-day.
Connect Remote server
claude mcp add --transport http openworkdays https://openworkdays.vercel.app/api/mcp
{
"mcpServers": {
"openworkdays": {
"url": "https://openworkdays.vercel.app/api/mcp"
}
}
}
{
"servers": {
"openworkdays": {
"type": "http",
"url": "https://openworkdays.vercel.app/api/mcp"
}
}
}
Settings > Connectors > Add custom connector
URL: https://openworkdays.vercel.app/api/mcp
Tools 1 found in our last check
businessdaysBusiness-day date math. Three modes inferred from params: add (start+days -> the date N business days away, negative days = before), diff (start+end -> count of business days between, inclusive of both endpoints), is (date -> is it a business day). Optional weekend (default sat,…
Details
| Endpoint | https://openworkdays.vercel.app/api/mcp (Streamable HTTP) |
| First published | 17 May 2026 |
| Last updated | 17 May 2026 |
| Registry name | io.github.SolvoHQ/openworkdays |
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