Author, validate and maintain a CRAYON-C4 architecture model — never write an invalid file.
Crayon-c4-mcp is an MCP integration. Author, validate and maintain a CRAYON-C4 architecture model — never write an invalid file.
The published npm package is @crayon-c4/mcp, version 1.47.0. Its declared MCP transport is stdio.
The package declares CRAYON_C4_LICENSE_KEY: Optional. Unlocks repository scanning and AI enrichment. Without it, the free tier still gives the full local authoring loop (create/edit elements, relationships, diagrams, validation)..
Check the maintainer’s instructions for account access, authentication and the supported client configuration. Once connected, inspect the tools your client receives and try a small task that matches the server’s stated purpose. The registry description does not include a verified, complete tool list.
View the publisher’s registry entry · Project repository. This profile uses version 1.47.0 from the registry. Registration identifies the publisher namespace; it does not establish that this is a first-party integration for every service it connects.
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| Variable | Description | Required |
|---|---|---|
| CRAYON_C4_LICENSE_KEY | Optional. Unlocks repository scanning and AI enrichment. Without it, the free tier still gives the full local authoring loop (create/edit elements, relationships, diagrams, validation). | Check documentation |
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