io.github.excaliwow/mcp
Excaliwow
Is the Excaliwow MCP server down? No. It answered initialize and tools/list in the probe of 2026-10-30.
Create, read, render, organize, and safely edit persistent Excalidraw diagrams with AI agents.
alive probed 2026-11-14 · unchanged since 2026-10-30
- Run it
- npx -y @excaliwow/mcp@0.14.3 (stdio, probed in a container with the network off)
- Host
- npmjs.com
- Reports itself as
- excaliwow 0.14.3
- Capabilities
- resources, tools
- Instructions
- 1 046 characters
- Of a 1M window
- 2.1 % of a 1M context window
- Count
- 21k tokens in Claude Opus 5.5, exact, measured 2026-10-16. With the Claude Code prefix mcp__…__ on each tool name: 21k. The o200k_base estimate is 12k. Counted again when the tool definitions change. Method.
- Repository
- https://github.com/excaliwow/mcp
- Registry
- active, updated 2026-08-05 · registry entry
Most expensive tools
The Claude column scales the o200k estimate of each tool by this server's ratio of exact to estimate, 1.72×.
| Tool | ≈ Claude tokens | o200k estimate | Share of this server |
|---|---|---|---|
| regenerate_diagram | 4 873 | 2 840 | 23 % |
| create_scene | 4 387 | 2 557 | 21 % |
| generate_diagram | 3 543 | 2 065 | 17 % |
| patch_elements | 2 392 | 1 394 | 11 % |
| edit_diagram | 841 | 490 | 4 % |
Compare this server with others.
More servers
Other registry entries on npmjs.com, the ones next to this name; all of them.
- io.github.evidai/tokenized-stock · alive
- io.github.evidai/xstocks · alive
- io.github.ewalid/rosetta-mcp · crashed on start
- RZD Tickets MCP io.github.ex3lite/mcp-rzd-tickets · alive
- io.github.execuro/sw-dev-knowledge-base-mcp · alive
- Exeris AI Bridge io.github.exeris-systems/ai-bridge · alive
- Labnana MCP io.github.exoticknight/labnana-mcp · alive
- io.github.exp78/telldone · not probed
Servers that mention excalidraw or persistent.
- Atlaso Memory ai.atlaso/mcp · needs auth
- ai.butlerbrain/mcp · needs auth
- ai.cdbx/mcp-server · needs auth
- Daishi ai.daishi/world · alive
- ai.getthroughline/throughline · needs auth
- JustOnce ai.justonce/memory · needs auth
- Synap Memory ai.maximem/synap · alive
- MemCell ai.memcell/memcell · needs auth
Badge for the README
The result of the latest probe, the tool count and the token cost. The feed has an entry for every probe that changed them.
A mail when this server changes
Stops answering, comes back, tool set or cost changes. One confirmation mail first, a stop link in every mail.
For the publisher
- This server is in the heaviest 10 % of the registry. Its 5 most expensive tools are 75 % of the cost. Shorter descriptions, fewer optional parameters and fewer tools cut the cost. The command npx mcpcost --url <endpoint> --tools 50 lists every tool with its cost.