Is io.studiomeyer/hook-conformance safe to use?

io.studiomeyer/hook-conformance has no known CVEs as of the latest MCPpedia security scan. It does not require authentication, so any local process can connect — keep this in mind in shared environments.

How do I install io.studiomeyer/hook-conformance?

io.studiomeyer/hook-conformance supports copy-paste install configs on its MCPpedia page for Claude Desktop, Cursor, and Claude Code. Scroll to the Quick Install section and select your client.

What can io.studiomeyer/hook-conformance do?

io.studiomeyer/hook-conformance provides 4 tools: Install, Subcommands, Compatibility, License. See the full tools list on the server page for descriptions and parameters.

What AI clients work with io.studiomeyer/hook-conformance?

io.studiomeyer/hook-conformance is compatible with claude-desktop, cursor, claude-code. It uses stdio and sse and http transport.

Is io.studiomeyer/hook-conformance actively maintained?

io.studiomeyer/hook-conformance is actively maintained — last commit was 7 days ago.

io.studiomeyer/hook-conformance

mcp-hook-conformance

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

60/wk 4 tools GitHub npm

No known CVEs

No license

Actively maintained

Last commit 7d ago

Works with most clients

Transport: stdio, sse, http

4 tools · ~101 tok

Grade A · 0.1% of 200K ctx

Edit this pageView history

AI / ML

Step 1

Install in your client

Config is the same across clients — only the file and path differ.

Supported in Claude Desktopstdio, sse, http · Node 18+

Paste into ~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "io-studiomeyer-hook-conformance": {
      "args": [
        "-y",
        "mcp-hook-conformance"
      ],
      "command": "npx"
    }
  }
}

Are you the author?

Add this badge to your README to show your security score and help users find safe servers.

Embed in your READMEAbout badges →

[![MCPpedia Score](https://mcppedia.org/api/badge/io-studiomeyer-hook-conformance)](https://mcppedia.org/s/io-studiomeyer-hook-conformance)

Read me

What io.studiomeyer/hook-conformance does

Part of the StudioMeyer MCP Stack — Built in Mallorca 🌴 · ⭐ if you use it

Test This Server

Run this in your terminal to verify the server starts. Then let us know if it worked — your result helps other developers.

npx -y 'mcp-hook-conformance' 2>&1 | head -1 && echo "✓ Server started successfully"

After testing, let us know if it worked:

Loading README…

Scored, not listed

Why this score

Five weighted categories — click any category to see the underlying evidence.

Score breakdown

85/100across 5 weighted dimensions

How we score →

0255075100

−15

Security

Maintenance

Efficiency

Documentation

Compatibility

Categoriesclick a row to see evidence

Security

OSV.dev

No known CVEs.

Checked mcp-hook-conformance against OSV.dev.

Inventory

Tools (4)

Click any tool to inspect its schema.

~101 tokens total

Community

Reviews

Be the first to review

Have you used this server?

Share your experience — it helps other developers decide.

How easy was setup?Did it work reliably?How was the documentation?

Frequently Asked Questions

Is io.studiomeyer/hook-conformance safe to use?: io.studiomeyer/hook-conformance has no known CVEs as of the latest MCPpedia security scan. It does not require authentication, so any local process can connect — keep this in mind in shared environments.
How do I install io.studiomeyer/hook-conformance?: io.studiomeyer/hook-conformance supports copy-paste install configs on its MCPpedia page for Claude Desktop, Cursor, and Claude Code. Scroll to the Quick Install section and select your client.
What can io.studiomeyer/hook-conformance do?: io.studiomeyer/hook-conformance provides 4 tools: Install, Subcommands, Compatibility, License. See the full tools list on the server page for descriptions and parameters.
What AI clients work with io.studiomeyer/hook-conformance?: io.studiomeyer/hook-conformance is compatible with claude-desktop, cursor, claude-code. It uses stdio and sse and http transport.
Is io.studiomeyer/hook-conformance actively maintained?: io.studiomeyer/hook-conformance is actively maintained — last commit was 7 days ago.

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Community

Discussion

Start a conversation

Ask a question, share a tip, or report an issue.

Has anyone used this with Cursor?How do you handle auth?Any alternatives?

Edit this pageView history

AI / ML

Step 1

Install in your client

Config is the same across clients — only the file and path differ.

Supported in Claude Desktopstdio, sse, http · Node 18+

Paste into ~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "io-studiomeyer-hook-conformance": {
      "args": [
        "-y",
        "mcp-hook-conformance"
      ],
      "command": "npx"
    }
  }
}

Are you the author?

Add this badge to your README to show your security score and help users find safe servers.

Embed in your READMEAbout badges →

[![MCPpedia Score](https://mcppedia.org/api/badge/io-studiomeyer-hook-conformance)](https://mcppedia.org/s/io-studiomeyer-hook-conformance)

Read me

What io.studiomeyer/hook-conformance does

Part of the StudioMeyer MCP Stack — Built in Mallorca 🌴 · ⭐ if you use it

Test This Server

Run this in your terminal to verify the server starts. Then let us know if it worked — your result helps other developers.

npx -y 'mcp-hook-conformance' 2>&1 | head -1 && echo "✓ Server started successfully"

After testing, let us know if it worked:

README

Part of the StudioMeyer MCP Stack — Built in Mallorca 🌴 · ⭐ if you use it

mcp-hook-conformance

Test-harness CLI that audits any MCP server for Claude Code v2.1.118 `mcp_tool` lifecycle-hook readiness.

The third foundation pillar:

mcp-protocol-conformance says: does the server speak the protocol?
mcp-server-attestation says: who signed this server?
mcp-hook-conformance says: is it safe to call this tool from a Stop, PreCompact, or UserPromptSubmit hook?

A note from us

We have been building tools and systems for ourselves for the past two years. The fact that this repo is small and has few stars is not because it is new. It is because we only just decided to share what we have built. It is not a fresh experiment, it is a long story with a recent commit.

We love building things and sharing them. We do not love social media tactics, growth hacks, or chasing stars and followers. So this repo is small. The code is real, it gets used, issues get answered. Judge for yourself.

If it helps you, sharing, testing, and feedback help us. If it could be better, an issue is more useful. If you build something with it, tell us at hello@studiomeyer.io. That genuinely makes our day.

From a small studio in Palma de Mallorca.

Install

npm install -g mcp-hook-conformance

Or run without install:

npx mcp-hook-conformance check ./hook-conformance.config.json

Quick start

# 1. Scaffold a config
npx mcp-hook-conformance init --server-name my-mcp-server

# 2. Edit hook-conformance.config.json (point command/args at your server)

# 3. Run the audit
npx mcp-hook-conformance check ./hook-conformance.config.json

Exit codes:

0 audit passed (no FAILs)
1 audit produced at least one FAIL
2 config error (missing file, invalid schema, unknown suite name)

Subcommands

Subcommand	Args	Description
`check`	`<config-path> [--output=human\|json\|junit] [--suite=...] [--tool=<name>] [--tries=<n>]`	Run audit; emits report to stdout.
`init`	`[--server-name=<name>] [--force]`	Write example `hook-conformance.config.json` to cwd.
`explain`	`<finding-code>`	Print full explanation and remediation for a finding (e.g. `IDEMP-001`).
`version-info`	—	Print tool version and supported MCP-spec range. (Alias: `version`.)

This is a CLI, not an MCP server. Do NOT run mcp-hook-conformance via mcp-inspector — the package declares mcp.specVersion for the targets it audits, not because it speaks MCP itself. Inspector will EACCES on dist/index.js (which is the library export) by design.

Audit suites

Suite	What it checks	Weight
`idempotency`	Same input N times produces same output, no UUIDs/timestamps unless annotated.	30
`side-effects`	Read-only tools must not mutate server state. Requires `stateProbe` config.	25
`latency`	p50 < 30s, p95 < 60s (configurable). 5 samples after 1 warmup call.	20
`determinism`	Response shape stable across calls; no float drift.	15
`dsgvo`	Tool d

... View full README on GitHub

Loading README…

Scored, not listed

Why this score

Five weighted categories — click any category to see the underlying evidence.

Score breakdown

85/100across 5 weighted dimensions

How we score →

0255075100

−15

Security

Maintenance

Efficiency

Documentation

Compatibility

Categoriesclick a row to see evidence

Security

OSV.dev

No known CVEs.

Checked mcp-hook-conformance against OSV.dev.

Inventory

Tools (4)

Click any tool to inspect its schema.

~101 tokens total

Community

Reviews

Be the first to review

Have you used this server?

Share your experience — it helps other developers decide.

How easy was setup?Did it work reliably?How was the documentation?

Frequently Asked Questions

Is io.studiomeyer/hook-conformance safe to use?: io.studiomeyer/hook-conformance has no known CVEs as of the latest MCPpedia security scan. It does not require authentication, so any local process can connect — keep this in mind in shared environments.
How do I install io.studiomeyer/hook-conformance?: io.studiomeyer/hook-conformance supports copy-paste install configs on its MCPpedia page for Claude Desktop, Cursor, and Claude Code. Scroll to the Quick Install section and select your client.
What can io.studiomeyer/hook-conformance do?: io.studiomeyer/hook-conformance provides 4 tools: Install, Subcommands, Compatibility, License. See the full tools list on the server page for descriptions and parameters.
What AI clients work with io.studiomeyer/hook-conformance?: io.studiomeyer/hook-conformance is compatible with claude-desktop, cursor, claude-code. It uses stdio and sse and http transport.
Is io.studiomeyer/hook-conformance actively maintained?: io.studiomeyer/hook-conformance is actively maintained — last commit was 7 days ago.