io.github.SQUORA-NL/crayon-c4-mcp
Author, validate and maintain a CRAYON-C4 architecture model — never write an invalid file.
MCP server · by SQUORA-NL
About
io.github.SQUORA-NL/crayon-c4-mcp is an MCP server published by SQUORA-NL. Marketplaces we read that list it: 1 (Official MCP Registry). The last change we recorded was on 2026-10-16. As of our marketplace pass on 2026-10-17.
What it asks for
- Runs on your machine
- Secrets: 1
- Settings: 1
Requires: CRAYON_C4_LICENSE_KEY (secret)
What it declares, asks for and runs, in full
Only install plugins from developers you trust. We list what marketplaces publish and do not test plugins.
Package
npm @crayon-c4/mcp (@crayon-c4/mcp on npm)
- npm downloads/week: 233 (2026-10-15)
- npm downloads/month: 842 (2026-10-15)
- Latest version on npm: 1.47.1, published 2026-10-13
- Declared version 1.47.2 is not listed on npm
npm facts come from the public npm registry (registry.npmjs.org, api.npmjs.org). Each figure is the registry's own and is never added to another. A registry that publishes no figure shows none: no number is not zero.
Works with
- Claude Code
- Codex
- Cursor
- VS Code
- Copilot CLI
From the marketplaces that list it and the MCP transport it declares, as each client documents them. We do not test plugins.
Connect
Commands and configs built only from what its marketplaces declare. We do not run them for you and do not test plugins.
As a local MCP server: npm package
Built from what Official MCP Registry declares.
claude mcp add --env "CRAYON_C4_LICENSE_KEY=<YOUR_CRAYON_C4_LICENSE_KEY>" --transport stdio crayon-c4-mcp -- npx -y @crayon-c4/mcp
[mcp_servers.crayon-c4-mcp]
command = "npx"
args = ["-y", "@crayon-c4/mcp"]
[mcp_servers.crayon-c4-mcp.env]
CRAYON_C4_LICENSE_KEY = "<YOUR_CRAYON_C4_LICENSE_KEY>"
{
"mcpServers": {
"crayon-c4-mcp": {
"command": "npx",
"args": [
"-y",
"@crayon-c4/mcp"
],
"env": {
"CRAYON_C4_LICENSE_KEY": "<YOUR_CRAYON_C4_LICENSE_KEY>"
}
}
}
}
Replace the values in angle brackets with your own. We show the names of the settings, never values.
Where it is published
| Marketplace | Status | Version | Figures | Verified | First seen |
|---|---|---|---|---|---|
| Official MCP Registry (Open the registry record) | Listed | 1.47.2 | Downloads/month (npm): 842 Downloads/week (npm): 233 |
Not marked |
Each figure is the marketplace's own and is never added up across marketplaces. A marketplace that publishes no figure shows none: no number is not zero.
What changed
- Official MCP Registry: released version 1.47.2 (was 1.47.0)
- Official MCP Registry: released version 1.47.0 (was 1.46.0)
Similar plugins
Products whose own names, descriptions, tools and skills are closest in meaning to this one, on every marketplace we read. Closeness is ranked within this list only.
-
MCP server for architecture and system design. Store and manage project architecture locally.
-
coremodels io.github.qg-aramai/coremodels
Schema modeling in JSON, JSON-LD, and other formats with CoreModels platform.
-
Manage SysML2 projects; check, evaluate, verify, query, document and diagram models.
-
Premium agentic endpoint for architecture-dna-mcp.
-
ai-architect-mcp-spec io.github.cdeust/ai-architect-mcp-spec
PRD verification and host-driven generation with multi-judge consensus across 17 MCP tools.
-
Local MCP canvas for Modellix image generation, editing, task recovery, and visual project work.
-
schema-validator-ai-mcp io.github.CSOAI-ORG/schema-validator-ai-mcp
Schema Validator Ai MCP Server by MEOK AI Labs
-
config-validator-ai-mcp io.github.CSOAI-ORG/config-validator-ai-mcp
Config Validator Ai MCP Server by MEOK AI Labs
-
mcp-spec-compliance-mcp io.github.CSOAI-ORG/mcp-spec-compliance-mcp
MCP Spec Compliance MCP — audits any MCP server.json against the official Model Context Protocol
-
Tool-first MCP: AST nav, impact/flow, task chains, memo/recall.
Similar plugins by marketplace
The same question asked of one marketplace at a time: is there an analog of this plugin there?
Has a listing on Claude Code: claude-plugins-community (5)
-
mcp-server io.github.cap-js/mcp-server
Model Context Protocol (MCP) server for AI-assisted development of CAP applications.
-
mdk-mcp-server io.github.SAP/mdk-mcp-server
Model Context Protocol (MCP) server for AI-assisted development of MDK applications.
-
Interactive C4 architecture diagrams (Simon Brown's model) for Claude Code. Five mode-driven workflows — Design (greenfield), Document-code (retro-doc from a repo), Document-prose…
-
AI plugin for working with CADBuildr, a CAD-as-code platform. Skills for project setup, API reference, broker/viewer iteration, and render/export workflows.
-
Analyze any project and generate a complete .claude/ automation structure: agents, pipelines, skills, memory, hooks, and settings. Supports fresh generation and validation modes.
Has a listing on Claude Code: claude-plugins-official (5)
-
mcp-server io.github.cap-js/mcp-server
Model Context Protocol (MCP) server for AI-assisted development of CAP applications.
-
mdk-mcp-server io.github.SAP/mdk-mcp-server
Model Context Protocol (MCP) server for AI-assisted development of MDK applications.
-
Figma design platform integration. Access design files, extract component information, read design tokens, and translate designs into code. Bridge the gap between design and…
-
Skills for creating MCP Apps with the MCP Apps SDK
-
Comprehensive development workflow for building AI agents with the Atomic Agents framework. Includes specialized agents for schema design, architecture planning, code review, and…
Has a listing on Claude: knowledge-work-plugins (5)
-
Figma design platform integration. Access design files, extract component information, read design tokens, and translate designs into code. Bridge the gap between design and…
-
AI-first project auditor and re-engineer based on the 9 design principles and 7 design patterns from the TechWolf AI-First Bootcamp
-
MCP server for terminal commands, file operations, and process management
-
DataRobot skills for AI/ML workflows — model training, deployment, predictions, feature engineering, monitoring, explainability, data preparation, App Framework CI/CD, and…
-
Build and deploy Base44 full-stack apps with CLI project management and JavaScript/TypeScript SDK development skills
Has a listing on Codex: openai-curated (openai/plugins) (5)
-
Skills for NVIDIAs ecosystem spans GPU acceleration, CUDA, AI agents, inference, robotics, Physical AI, Omniverse, and simulation. This plugin helps you understand the pieces…
-
Evaluate Codex skills and plugins from chat with a beginner-friendly start command, local-first reports, token budget explanations, and guided benchmarking.
-
Use MagicPath to find, inspect, install, create, and edit UI components from Codex.
-
Build with OpenAI APIs, Agents SDK, and ChatGPT Apps, and create and save OpenAI API keys from Codex.
-
Build iOS apps with workflows for App Intents, SwiftUI UI work, Simulator mirroring in the Codex in-app browser, performance profiling, leak investigation, and simulator debugging.
Has a listing on Community GitHub marketplaces (5)
-
MCP tool-catalog compression for Claude Code. Compresses the tool discovery payload from 71,929 to 581 tokens (-99.2%). Auto-installs the zero-dependency mcptoon CLI…
-
Comprehensive development workflow for building AI agents with the Atomic Agents framework. Includes specialized agents for schema design, architecture planning, code review, and…
-
4da-mcp-server io.github.4DA-Systems/4da-mcp-server
Upgrade intelligence for AI agents: what an upgrade changes, where it touches your code, CVE scans.
-
MCP server for terminal commands, file operations, and process management
-
Endor Labs workflow agents and setup for Claude Code.
Has a listing on Copilot CLI: github/awesome-copilot (5)
-
Complete toolkit for building Model Context Protocol (MCP) servers in TypeScript/Node.js using the official SDK. Includes instructions for best practices, a prompt for generating…
-
Figma design platform integration. Access design files, extract component information, read design tokens, and translate designs into code. Bridge the gap between design and…
-
Complete toolkit for building Model Context Protocol (MCP) servers in Go using the official github.com/modelcontextprotocol/go-sdk. Includes instructions for best practices, a…
-
Complete toolkit for building Model Context Protocol (MCP) servers in Kotlin using the official io.modelcontextprotocol:kotlin-sdk library. Includes instructions for best…
-
Model, visualize, and deploy applications with Radius from the GitHub Copilot app and CLI.
Has a listing on Copilot CLI: github/copilot-plugins (5)
-
Build Power Apps Canvas Apps using the Canvas Authoring MCP server.
-
Toolkit for building Microsoft 365 Copilot declarative agents — scaffolding, JSON manifest development, and capability configuration.
-
model-apps
Build and deploy Power Apps generative pages for model-driven apps with specialist agents for planning, entity creation, and parallel code generation. Requires PAC CLI >= 2.7.0…
-
mcp-apps
Generate MCP App widgets for MCP tools. Produces self-contained HTML widgets using the MCP Apps protocol.
-
Navigate and interact with your C++ code using the Microsoft C++ Language Server.
Has a listing on Cursor: cursor/plugins (5)
-
Build apps, scripts, and automations with the TypeScript SDK.
-
Fan large tasks out across parallel cloud agents with planners, workers, verifiers, and structured handoffs.
-
Iterative self-referential AI loops using the Ralph Wiggum technique.
-
Skills for building on the Cursor Origin API. Fetch the live spec first, then follow the Origin rules for credentials, scopes, webhooks, paging, and errors. Includes a skill that…
-
if you want to go fast, go deep first. pstack helps you write less, but higher quality code. rigorous agent workflows you can parallelize with confidence.
Has a listing on Docker MCP Catalog (5)
-
mcp-neo4j-data-modeling io.github.neo4j-contrib/mcp-neo4j-data-modeling
A simple Neo4j MCP server for creating graph data models.
-
Bridges multiple AI models and CLIs, enabling orchestrated workflows across Claude Code, Gemini CLI, Codex CLI, and other AI development tools.
-
Giving Claude ability to run code with E2B via MCP (Model Context Protocol).
-
Analyze code quality and security with SonarQube Server or Cloud directly in AI assistants.
-
Read and score Opik traces, experiments, datasets and prompts from your AI assistant.
Has a listing on Official MCP Registry (5)
-
MCP server for architecture and system design. Store and manage project architecture locally.
-
coremodels io.github.qg-aramai/coremodels
Schema modeling in JSON, JSON-LD, and other formats with CoreModels platform.
-
Manage SysML2 projects; check, evaluate, verify, query, document and diagram models.
-
Premium agentic endpoint for architecture-dna-mcp.
-
ai-architect-mcp-spec io.github.cdeust/ai-architect-mcp-spec
PRD verification and host-driven generation with multi-judge consensus across 17 MCP tools.
Found by meaning, not by shared code or a shared repository: similar plugins stay separate products, and this is not a review or a recommendation.
Want this mark on your plugin in our catalog?
Prove you maintain it with a file in its repository, a file on your domain or a DNS record, and you can show this mark on the card, with live banners for your site and README. How verification works
You also get alerts when a marketplace lists it, drops it, changes its verified mark or what it asks for, and its remote endpoint goes on monitoring as a web service.
Data comes from the Official MCP Registry (registry.modelcontextprotocol.io), CC0 1.0. Figures come from our own regular passes over the marketplaces, last read on . We publish no contact details for plugin publishers.