io.github.syncday-app/sync-day
sync.day
Free no-signup group scheduling; share a link and rank times by who's free.
alive probed 2026-10-05 · HTTP 200
8tools
5.0ktokens in Claude Opus 5.5
5.1ktokens in Claude Code
2.5 %of a 200k context window
3.2ko200k_base estimate
601 msto initialize
92 msto list tools
- Endpoint
- https://sync.day/mcp/mcp (streamable-http)
- Host
- sync.day
- Protocol
- 2025-11-25
- Reports itself as
- sync.day 1.0.0
- Capabilities
- tools
- Instructions
- 1 200 characters
- Claude count
- Claude Opus 5.5, measured 2026-10-05. Counted again when the tool definitions change. Method.
- Website
- https://sync.day
- Registry
- active, updated 2026-09-05 · registry entry
- Reachable
- 6 of the last 6 probes
Most expensive tools
| Tool | Tokens (o200k) | Share of this server |
|---|---|---|
| update_event | 668 | 21 % |
| create_event | 638 | 20 % |
| vote_time | 520 | 16 % |
| submit_availability | 427 | 14 % |
| decide_time | 288 | 9 % |
History
We add a row when the result changes. A server with no change keeps its last row.
| Probed | Result | Init | Tools | Claude | o200k |
|---|---|---|---|---|---|
| 2026-10-05 16:31 | alive | 601 ms | 8 | 5.0k | 3.2k |
| 2026-10-05 00:56 | alive | 708 ms | 8 | 3.2k | |
| 2026-10-04 10:07 | alive | 942 ms | 8 | 3.2k | |
| 2026-10-04 08:00 | alive | 650 ms | 8 | 3.2k | |
| 2026-10-03 20:40 | alive | 2.2 s | 8 | 3.2k | |
| 2026-10-03 17:55 | alive | 812 ms | 8 | 3.2k |
Badge and feed
[](https://mcpcost.ulehla.dev/s/io.github.syncday-app/sync-day)
An entry for every probe that changed the result, the tool count or the token cost: Atom feed. Add it to a feed reader or a Slack RSS app to hear when the server stops answering or its tool set grows.