The MCP ecosystem often has several independent packages implementing the same tool — and "Calendar" currently has 9. Every one of them was scanned with the same deterministic engine, so the numbers below are directly comparable: the Trust Score (A–F), the capability blast radius, and how much of the package the scan could actually inspect. They are ranked by score; ties break toward unscoped, longer-established packages.
| Implementation | Package | Trust | Capability | Coverage | Findings | Scanned |
|---|---|---|---|---|---|---|
| Calendarbest by PyPI | calendar
PyPI |
A 100/100 | Minimal | Metadata | 0 | 2026-07-22 |
| Calendar by Masbuc53 | calendar-mcp
npm |
A 100/100 | Minimal | Source | 0 | 2026-07-22 |
| Calendar by nchufa | @nchufa/calendar
npm |
A 100/100 | Minimal | Source | 0 | 2026-07-22 |
| Calendar by shirabe-api | @shirabe-api/calendar-mcp
npm |
A 100/100 | Minimal | Metadata | 0 | 2026-07-22 |
| Calendar by gongrzhe | @gongrzhe/server-calendar-mcp
npm |
A 100/100 | Minimal | Source | 0 | 2026-07-22 |
| Calendar by franciscpd | @franciscpd/calendar-mcp-server
npm |
A 100/100 | Minimal | Source | 0 | 2026-07-22 |
| Google Calendar (Infoinlet) by infoinlet | @infoinlet/mcp-calendar
npm |
A 98/100 | Minimal | Source | 1 | 2026-07-22 |
| Calendar by p-w-4-z | calendar-mcp
PyPI |
A 98/100 | Minimal | Source | 1 | 2026-07-22 |
| Calendar Source verified by antidrift | @antidrift/mcp-calendar
npm |
A 94/100 | High | Source | 3 | 2026-07-22 |
A higher-ranked implementation is not "the official one" — ranking reflects only what the deterministic scan found in each published package. Open an implementation to read its individual findings with evidence, its scan history per version, and to grab an embeddable badge. Scores are automated opinions, recomputed on every rescan.