The Market Calendar
Seasonality by month for 9 markets, S&P 500 day by day this month, and US economic release dates.
likely compatible
Answered an MCP initialize with no credentials; use auth 'None'.
Rule R2a · what this means · Not tested in Copilot Studio.
| Registry name | tech.marketcalendar/seasonality |
| Endpoint used for verdict | https://marketcalendar.tech/mcp |
| Transports | streamable-http |
| Auth (Copilot Studio setting) | None (open) |
| Last endpoint check | 2026-10-20T18:18:30Z · initialize OK |
| Website | https://marketcalendar.tech/seasonality |
| Version | 1.1.0 |
| Registry updated | 2026-10-20 |
Track changes like this weekly. New Copilot-ready MCP servers, breakages and auth changes, in one short email.
Is this wrong or out of date? Email us. Data built 2026-10-20.