Vibe Check MCP server
Metacognitive AI agent oversight: adaptive CPI interrupts for alignment, reflection and safety
502 stars89 downloads/wk
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If you have run it, two minutes of your experience saves the next person an afternoon.
Vibe Check tools (5, 1 write)
write = sends, deletes, buys or postsRead from the package source without running it. The installed server may list more.
check_constitutionReturn the current constitution rules for this session
reset_constitutionOverwrite all constitutional rules for this session
update_constitutionwrite actionAppend a constitutional rule for this session (in-memory)
vibe_checkMetacognitive questioning tool that identifies assumptions and breaks tunnel vision to prevent cascading errors
vibe_learnPattern recognition system that tracks common errors and solutions to prevent recurring issues
Public scan report
scanner v0.1.10 · 2026-10-01 · same rubric, same numbers if you re-run it
- Code scan9 source files scanned25/25
- –Live reliabilityno gateway calls yet and no remote to proben/a
- –Tool poisoningtools not inspected (local package is not executed); not countedn/a
- Auth qualitystatic API keys via environment variables6/15
- Maintenancelast push 2 days ago15/15
- Maintainer identityregistry namespace matches repository owner; GitHub account older than a year8/10
Install Vibe Check in Claude Code, Cursor or VS Code
Runs npx -y @pv-bhat/vibe-check-mcp on your machine. Read the scan report first; the gateway never runs local packages.
claude mcp add vibe-check-mcp-server -- npx -y @pv-bhat/vibe-check-mcp
What the publisher says
From the Vibe Check repository's README, as published. We do not edit it. Read it on GitHub
Vibe Check MCP
This project is in maintenance mode. Active feature development has ended; only maintenance patches (security and bug fixes) are published. v2.9.0 is the latest maintenance release. The server remains fully functional. Community forks and contributions are welcome under the MIT license.
KISS overzealous agents goodbye. Plug & play agent oversight tool.
Based on research: In our study agents calling Vibe Check improved success +27% and halved harmful actions -41%
Featured on PulseMCP “Most Popular (This Week)” • 5k+ monthly calls on Smithery.ai • research-backed oversight • STDIO + streamable HTTP transport
Plug-and-play mentor layer that stops agents from over-engineering and keeps them on the minimal viable path — research-backed MCP server keeping LLMs aligned, reflective and safe.
Trusted by developers across MCP platforms and registries
Quickstart (npx)
Run the server directly from npm without a local installation. Requires Node >=20. Choose a transport:
Option 1 – MCP client over STDIO
npx -y @pv-bhat/vibe-check-mcp start --stdioShortened. The full README is on GitHub.
Nothing above is checked by us. What we check is on the safety report.
Vibe Check: common questions
- Is Vibe Check MCP server safe?
- Mostly: it is graded B (83/100). Read the Vibe Check safety report
- How do I install Vibe Check?
- It runs on your machine. Copy the Claude Code, Cursor, VS Code or Claude Desktop config from the install section.
- Does Vibe Check need an API key?
- Yes. The registry entry asks for
YOUR_API_KEY. - Is Vibe Check maintained?
- The last commit was 14 days ago (2026-09-29). The latest release is v1.0.0.
- What can I use instead of Vibe Check?
- Servers from other publishers that do the same job: Shellward MCP server and LLMVerify MCP server.
Alternatives to Vibe Check
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