mcp server
Whenna
Group scheduling: create a plan link, mark availability, get best times, lock the final time.
Description as published by the maintainer. Source
- version 1.0.0
- active
active — Registry entry last updated 2026-07-03.
What this server can do
7 functions, named and described by the server itself. Parameter names are shown because they say more about what a function does than its name usually does.
whenna_best_times(id, top)- Ranked best meeting times for a plan: contiguous blocks where the most participants are free, with who is free in each block. Required: id.
whenna_create_plan(days, title, end_hour, language, location, timezone, frequency, start_hour, every_weeks, notify_email, slot_minutes)- Create a Whenna plan (a shareable link that finds the time everyone is free). Returns the link to share with humans or other agents, and a creator_key that authorizes locking the final time. Times are wall-clock in the given IANA timezone. For a RECURRING plan ("every Tuesday"), pass weekday names in days (e.g. ["Tuesday"] or ["Tue","Thu"]) — the plan then has no dates and calendar events repeat weekly. Required: title, days, start_hour, end_hour.
whenna_get_plan(id)- Fetch a Whenna plan: title, window, every participant's availability, ranked best times, the locked final time if set, and a negotiation brief — state (awaiting_answers | collecting | everyone_overlaps | locked), who has answered, and suggested_next_step telling an agent the best next move. Poll this between actions when coordinating. Required: id.
whenna_lock_time(id, day, start, minutes, use_best, creator_key)- Lock the final time on a plan (requires the creator_key returned by whenna_create_plan). Pass use_best:true to lock the top-ranked best time automatically, or give an explicit day/start. Everyone viewing the link sees it as confirmed, with add-to-calendar buttons. Returns calendar links (Google, Outlook, .ics). Required: id, creator_key.
whenna_mark_availability(id, free, name, withdraw)- Set a participant's free times on a plan (replaces that participant's previous answer). Express availability as free ranges per day; the server converts them to slots. Use the participant's human name so the group recognizes them. An EMPTY free array records an explicit "can't make any of these times" (the group sees a ✗); pass withdraw:true instead to remove the answer entirely, as if never given. The result reports any ranges that could not be applied and why. Required: id, name.
whenna_plan_next(id, creator_key)- Group memory: start the group's next plan from a finished one. Clones the setup (title, hours, place/video, discussion), proposes the next occurrences of the locked weekday as candidate days, links old→new (the old link shows everyone "the next one is live"), and emails the people who opted in to hear about this group's next plans. Requires creator_key. Returns the new plan and its own creator_key — keep it to lock the new time. Idempotent: if a successor already exists it is returned. Required: id, creator_key.
whenna_set_place(id, location, video_call, creator_key)- Set where the group meets: a place name, or video_call:true to attach Whenna's built-in encrypted video room (the room link then goes on everyone's calendar automatically). Place and video room are mutually exclusive. Requires creator_key. Required: id, creator_key.
Last successful function declaration observed on . Source: https://whenna.com/mcp. We list what the server declared; we do not call any of these functions.
Endpoint status observed on . Source: https://whenna.com/mcp.
Signals
These are separate measurements of different things. They are deliberately not combined into one score, because a popularity number that mixes website traffic with saves and stars cannot be checked or acted on.
| Signal | Value | What it measures | Window | Observed | Source |
|---|---|---|---|---|---|
| Latest published version | 1.0.0 | Latest version string the maintainer published to the registry. | as of fetch | Model Context Protocol | |
| Registry record last updated | 2026-07-03 | When the registry record was last updated by its maintainer. | point in time | Model Context Protocol | |
| First listed in the MCP Registry | 2026-07-03 | Date this server was first published to the official MCP Registry. Not a usage or quality measure. | point in time | Model Context Protocol | |
| mcp tools declared | 7 tools | Number of functions the server itself declared when asked to list them. This is what the server offers an agent, not a measure of how well any of them work. | as of probe | whenna.com | |
| mcp endpoint status | ok | The server listed 7 functions when asked. | as of probe | whenna.com |
Where to get it
This record as data
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