com.mcpcalc/calculator
mcpcalc-mcp
Calculators accessible via MCP with real-time collaborative sessions and shareable URLs.
alive probed 2026-10-05 · HTTP 200
10tools
3.4ktokens in Claude Opus 5.5
3.5ktokens in Claude Code
1.7 %of a 200k context window
1.8ko200k_base estimate
1.5 sto initialize
835 msto list tools
- Endpoint
- https://mcpcalc.com/api/v1/mcp (streamable-http)
- Host
- mcpcalc.com
- Protocol
- 2025-03-26
- Reports itself as
- mcpcalc-mcp 1.0.0
- Capabilities
- tools
- Instructions
- none
- Claude count
- Claude Opus 5.5, measured 2026-10-05. Counted again when the tool definitions change. Method.
- Registry
- active, updated 2026-02-13 · registry entry
- Reachable
- 6 of the last 6 probes
Most expensive tools
| Tool | Tokens (o200k) | Share of this server |
|---|---|---|
| push_session_action | 1 153 | 63 % |
| calculate_cas_headless | 119 | 7 % |
| calculate_cas | 118 | 6 % |
| generate_prefilled_url | 84 | 5 % |
| calculate | 82 | 5 % |
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 13:25 | alive | 1.5 s | 10 | 3.4k | 1.8k |
| 2026-10-05 00:17 | alive | 1.0 s | 10 | 1.8k | |
| 2026-10-04 09:57 | alive | 1.7 s | 10 | 1.8k | |
| 2026-10-04 07:50 | alive | 1.8 s | 10 | 1.8k | |
| 2026-10-03 20:30 | alive | 1.9 s | 10 | 1.8k | |
| 2026-10-03 17:48 | alive | 1.5 s | 10 | 1.8k |
Badge and feed
[](https://mcpcost.ulehla.dev/s/com.mcpcalc/calculator)
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.