No red flags found in any of the 11 categories — no credential harvesting, no data exfiltration, no curl-pipe-shell installer. Scanned against the SlowMist agent-security taxonomy, refreshed every 8 hours. Full audit →
by seuros · MCP Server · ★ 120
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ActionMCP ActionMCP is a Ruby gem focused on providing Model Context Protocol (MCP) capability to Ruby on Rails applications, specifically as a server. ActionMCP is designed for production Rails environments and does not support STDIO transport. STDIO is not included because it is not production-ready and is only suitable for desktop or script-based use cases. Instead, ActionMCP is built for robust, network-based deployments. The client functionality in ActionMCP is intended to connect to remote MCP servers, not to local processes via STDIO. It offers base classes and helpers for creating MCP applications, making it easier to integrate your Ruby/Rails application with the MCP standard. With ActionMCP, you can focus on your app's logic while it handles the boilerplate for MCP compliance. Introduction Model Context Protocol (MCP) is an open protocol that standardizes how applications provide context to large language models (LLMs). Think of it as a universal interface for connecting AI assistants to external data sources and tools.
| Stars | 120 |
| Forks | 20 |
| Language | Ruby |
| Category | MCP Server |
| License | MIT |
| Quality Score | 68.2249125640023/100 |
| Open Issues | 3 |
| Last Updated | 2026-09-08 |
| Created | 2025-02-14 |
| Platforms | browser, claude-code, cli, mcp, ruby, vscode |
| Est. Tokens | ~25k |
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action_mcp is Rails Engine with MCP compliant Spec.. It is categorized as a MCP Server with 120 GitHub stars.
action_mcp is primarily written in Ruby. It covers topics such as ai, authentication, claude.
You can find installation instructions and usage details in the action_mcp GitHub repository at github.com/seuros/action_mcp. The project has 120 stars and 20 forks, indicating an active community.
action_mcp is released under the MIT license, making it free to use and modify according to the license terms.
The top alternatives to action_mcp on Agent Skills Hub include postman-mcp-server, rails-ai-context, gopher-mcp. Each offers a different approach to the same problem space — compare them side-by-side by stars, quality score, and community activity.
Grades come from a rule-based scan built on the SlowMist agent-security taxonomy, covering 11 red-flag categories including credential harvesting, data exfiltration, and curl | sh installers. It is a first-layer scan, not a manual audit — we say so rather than overstate it.
The scale of the problem is documented independently: Liu et al. (2026), in a study of 31,132 agent skills, report that 26.1% contain security vulnerabilities. Our own full-catalog census is published as a citable open dataset.
Sources & who's responsible: