# MCP Hook Conformance

Audits MCP servers for Claude Code mcp\_tool hook readiness: idempotency, latency, side\-effects\.

Canonical: https://claudelist.com/listings/mcp-reg-io-studiomeyer-hook-conformance-de23626c00

Category: MCP Servers

Source: community · studiomeyer\-io

Source checked: 2026-10-14

Website: https://www.claudemcp.org/mcp/registry/io-studiomeyer-hook-conformance-de23626c0048.html

Publisher description: Audits MCP servers for Claude Code mcp_tool hook readiness: idempotency, latency, side-effects.

## Install or set up

1. Review the publisher repository and npm package `mcp-hook-conformance@0.1.3` before running it. The MCP Registry declares this package as a stdio server.
2. Install Node.js, then run the command below in your Claude Code project. Check the publisher README for any account or configuration requirements.
3. Restart Claude Code and use `/mcp` to confirm the connection and review its tools and permissions.

```sh
claude mcp add mcp-io-studiomeyer-hook-conformance-de2362 -- npx -y mcp-hook-conformance@0.1.3
```

Installation guide: https://github.com/studiomeyer-io/mcp-hook-conformance