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Vibe Check MCP Server

@PV-Bhat

RepositoryHomepage

Basic information

Category

Other

License

MIT

Transports

stdio

Author

PV-Bhat

About Vibe Check MCP Server

Vibe Check is a tool that provides mentor-like feedback to AI Agents, preventing tunnel-vision, over-engineering and reasoning lock-in for complex and long-horizon agent workflows. KISS your over-eager AI Agents goodbye! Effective for: Coding, Ambiguous Tasks, High-Risk tasks

#automation#mcp#error-handling#agent-based#workflow-automation#ai-agents#metacognition#agentic-workflow#agentic-ai#model-context-protocol#mcp-server#vibe-coding#vibecoding#model-context-protocol-servers

Vibe Check MCP Server config

Add this server to your MCP-compatible client using the configuration below.

{
  "mcpServers": {
    "vibe-check": {
      "command": "node",
      "args": [
        "/path/to/vibe-check-mcp/build/index.js"
      ],
      "env": {
        "GEMINI_API_KEY": "YOUR_GEMINI_API_KEY"
      }
    }
  }
}

Vibe Check MCP Server tools

Tool list not available yet

This listing does not currently have a tool list to display. This does not mean the server has no tools; check its documentation for supported capabilities.

We auto-extract tools from the README. The maintainer can list them under a ## Tools heading to populate this section.

Overview

What is Vibe Check MCP?

Vibe Check MCP is a lightweight, plug-and-play oversight server implementing Anthropic’s Model Context Protocol. It acts as an AI meta-mentor for LLM agents, using Chain-Pattern Interrupts (CPI) to prevent reasoning lock-in and keep agents on the minimal viable path. Research shows agents using Vibe Check improved success by 27% and halved harmful actions by 41%.

How to use Vibe Check MCP?

Run directly via npx with npx -y @pv-bhat/vibe-check-mcp start --stdio for MCP clients or --http --port 2091 for manual HTTP inspection. Requires Node >=20. Add the appropriate command block to your MCP client config. Optionally set API keys in a .env file (Gemini, OpenAI, Anthropic, or OpenRouter) and provide a sessionId for history continuity.

Key features of Vibe Check MCP

  • CPI adaptive interrupts that challenge assumptions and keep agents aligned.
  • Multi-provider LLM support: Gemini, OpenAI, Anthropic, and OpenRouter.
  • History continuity: summarizes prior advice when a sessionId is supplied.
  • Optional vibe_learn logs mistakes and fixes for future reflection.
  • Session constitution: enforce per-session rules via update_constitution, reset_constitution, and check_constitution tools.
  • Research-backed with published results; listed in Anthropic’s official MCP repo and MCP Registry.

Use cases of Vibe Check MCP

  • Preventing agents from over-engineering by providing quick sanity checks.
  • Keeping LLMs aligned and reflective before irreversible actions.
  • Reducing harmful agent behaviors in production or experimental workflows.
  • Maintaining consistency across sessions with per-session rule sets.
  • Integrating meta-cognitive feedback into agent system prompts for improved common-sense reasoning.

Frequently asked questions

1

What runtime does Vibe Check MCP require?

Node **>=20** is required. It runs on any platform that supports Node.js.

2

What transport options are available?

STDIO transport for MCP-aware clients (Claude Desktop, Cursor, Windsurf, etc.) and HTTP transport for manual inspection or custom integrations. Default port for HTTP is 2091.

3

Is Vibe Check MCP still actively developed?

The project is in maintenance mode as of the latest release (v2.8.1). Active feature development has ended; only security and bug fix patches are published. Community forks are welcome under the MIT license.

4

Which LLM providers are supported?

Gemini (default), OpenAI, Anthropic, and OpenRouter. Provider is configured via environment variables and can be overridden with `DEFAULT_LLM_PROVIDER`.

5

How do I enforce rules per session?

Use the `update_constitution` tool to set rules for a given `sessionId` (e.g., “no external network calls” or “prefer unit tests before refactors”). Rules are honored by CPI interrupts. Clear them with `reset_constitution` or inspect them with `check_constitution`.

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