vibe-check-mcp-server

Overview

Vibe Check MCP is a research-backed oversight tool that implements Anthropic's Model Context Protocol. It acts as an AI meta-mentor for agents, interrupting pattern inertia with Chain-Pattern Interrupts (CPI) to prevent Reasoning Lock-In. The tool uses a secondary LLM to provide metacognitive feedback to your main agent, helping it stay on the minimal viable path and escalating complexity only when evidence demands it. While no longer actively maintained, the final release (v2.8.0) remains fully functional with security patches and bug fixes.

Try asking AI

After installing, here are 5 things you can ask your AI assistant:

• update_constitution({ sessionId, rules })

  Merges/sets rule set for a session

  Try:Update the constitution for session 123 to include no external network callsTry:Set new rules for the current session: prefer unit tests before refactors
• reset_constitution({ sessionId })

  Clears session rules for a specific session

  Try:Reset the constitution for session 456Try:Clear all rules from the current session
• check_constitution({ sessionId })

  Returns effective rules for a session

  Try:Check the current constitution for session 789Try:Show me the active rules for this session

Comparable tools

Installation

npx -y @pv-bhat/vibe-check-mcp start --stdio

{
  "mcpServers": {
    "vibe-check-mcp": {
      "command": "npx",
      "args": ["-y", "@pv-bhat/vibe-check-mcp", "start", "--stdio"]
    }
  }
}

npx -y @pv-bhat/vibe-check-mcp start --http --port 2091

FAQ

Is this project still maintained?

No, v2.8.0 is the final release with security patches and bug fixes. The server remains fully functional under the MIT license, and community forks are welcome.

Which LLM providers are supported?

Vibe Check supports Gemini (default), OpenAI, Anthropic, and OpenRouter as LLM providers for the metacognitive feedback layer.

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