io.github.SQUORA-NL/crayon-c4-mcp
crayon-c4
Author, validate and maintain a CRAYON-C4 architecture model — never write an invalid file.
alive probed 2026-10-14
23tools
9.0ktokens in Claude Opus 5.5
9.3ktokens in Claude Code
4.5 %of a 200k context window
5.3ko200k_base estimate
254 msto initialize
11 msto list tools
- Run it
- npx -y @crayon-c4/mcp@1.47.0 (stdio, probed in a container with the network off)
- Host
- npmjs.com
- Reports itself as
- crayon-c4 0.1.0
- Capabilities
- prompts, resources, tools
- Instructions
- 1 009 characters
- Claude count
- Claude Opus 5.5, measured 2026-10-14. Counted again when the tool definitions change. Method.
- Repository
- https://github.com/SQUORA-NL/CRAYON.C4
- Registry
- active, updated 2026-10-12 · registry entry
- Reachable
- 1 of the last 1 probe
Most expensive tools
| Tool | Tokens (o200k) | Share of this server |
|---|---|---|
| merge_model | 495 | 9 % |
| upsert_nodes | 392 | 7 % |
| set_session_settings | 352 | 7 % |
| upsert_layer | 327 | 6 % |
| scan_repo | 312 | 6 % |
Badge and feed
[](https://mcpcost.ulehla.dev/s/io.github.SQUORA-NL/crayon-c4-mcp)
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.