Calendly vs OnlineAfspraken Slots
Calendly is a plugin bundle for AI coding tools published by Cursor. Marketplaces we read that list it: 1 (Cursor: cursor/plugins). OnlineAfspraken Slots is an MCP server published by RichieB2B. Marketplaces we read that list it: 1 (Official MCP Registry). As of our marketplace pass on 2026-10-24. This pair was picked by a reader, not by our comparison rule, so search engines are asked not to index the page.
Where each is published
| Marketplace |  Calendly |  OnlineAfspraken Slots |
|---|---|---|
| Cursor: cursor/plugins | Listed Version: 1.0.0 Forks (GitHub): 1 367 Stars (GitHub): 13 830 Not marked · First seen |
Not listed |
| Official MCP Registry | Not listed | Listed Version: 0.1.0 Downloads/month (PyPI): 139 Downloads/week (PyPI): 19 Forks (GitHub): 0 Stars (GitHub): 0 Not marked · First seen |
Each figure is the marketplace's own and is never added up across marketplaces. A marketplace that publishes no figure shows none: no number is not zero.
The facts side by side
| Fact | Calendly | OnlineAfspraken Slots |
|---|---|---|
| Marketplaces that list it | 1 | 1 |
| Stars (GitHub) (differs) | 13 830 (better) | 0 (worse) |
| Forks (GitHub) (differs) | 1 367 (better) | 0 (worse) |
| Last release | Not published | Not published |
| Where it runs (differs) | Remote server (mcp.calendly.com) | On your machine (onlineafspraken-slots-mcp) |
| Transport (differs) | Streamable HTTP | stdio |
| Tools it declares | Not published | Not published |
| Environment variables it asks for | Not published | Not published |
| Parts of the bundle (differs) | 1 | Not a bundle |
| Licence (differs) | MIT | Not stated |
| Repository (differs) | github.com/cursor/plugins | github.com/richieb2b/onlineafspraken-slots-mcp |
| Changes in the last 7 days | 0 | 0 |
| First seen | 2026-10-11 | 2026-10-11 |
| Endpoint at the last check (differs) | Responded 4 days ago | no remote endpoint we check |
Lines where the two differ have a tinted background and bold values. Where the data itself says which value is better (more marketplaces, a larger figure of the same marketplace, a fresher release, a verified mark on a marketplace that lists both), the better one is also marked green with ▲ and the worse one red with ▼. Where it runs, the transport, the tools, the settings, hooks, the bundle's parts, the licence and the week's changes are marked only as different: more or fewer is not better in itself.
What each says it does
Calendly
Check availability and book, cancel, or reschedule.
OnlineAfspraken Slots
Read available slots from a public OnlineAfspraken widget URL without an account.
How to run each
Calendly
No data for an automatic command: what its marketplaces declare does not say unambiguously how to connect it.
OnlineAfspraken Slots As a local MCP server: PyPI package
claude mcp add --transport stdio onlineafspraken-slots -- uvx onlineafspraken-slots-mcpCommands built only from what the marketplaces declare; the full set for every client is on each card.
Only Calendly has a remote endpoint we check. How we check endpoints
Tools each declares
Neither one's marketplaces publish a list of tools, so there is nothing to compare.
Settings each asks for
Neither one's marketplaces publish the settings it asks for.
What it can do: Calendly · What it can do: OnlineAfspraken Slots · Compare two other plugins
Data comes from the public marketplace file https://github.com/cursor/plugins/blob/HEAD/.cursor-plugin/marketplace.json. Data comes from the Official MCP Registry (registry.modelcontextprotocol.io), CC0 1.0. Figures come from our own regular passes over the marketplaces, last read on . We publish no contact details for plugin publishers.