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Simple Lab Tools Label Maker

by rgejman · remote · no sign-in to list tools · v1.0.0 · published by GitHub user rgejman

Create printable cryogenic lab, sample, tube and QR label sheets. Six templates; free, no login.

Changes · 1
CompareRegistry entry

2 tools: 1 change things and 1 only read.

Scanned Oct 21, 2026

1 check matched something in the tool definitions. No finding is not a safety guarantee. How the checks work.

claude mcp add --transport http simplelabtools-labels https://simplelabtools.com/mcp

Findings

Matches of fixed checks, with the text they matched.

1 warn
  • Warncreate_label_sheet

    The server marks "create_label_sheet" read-only (readOnlyHint: true), and its own name, description or input give the class "write".

    Matched text

    annotations: {"readOnlyHint":true,"destructiveHint":false,"idempotentHint":true,"openWorldHint":false}; The name "create_label_sheet" says "create": a word for a change.

    What this check looks for

Tools

Open a tool for its reasons and full description. Descriptions are the publisher's own words, shown as they are.

2 tools

Changes things 1Claude Code: ask
  • create_label_sheetCreate one printable sheet and editable share link from plain label text.1 finding

    Why it is in this group

    • The name "create_label_sheet" says "create": a word for a change.
    • The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.

    Findings

    • Warn

      The server marks "create_label_sheet" read-only (readOnlyHint: true), and its own name, description or input give the class "write".

      Matched text

      annotations: {"readOnlyHint":true,"destructiveHint":false,"idempotentHint":true,"openWorldHint":false}; The name "create_label_sheet" says "create": a word for a change.

      What this check looks for
    Description, as the server wrote it
    Create one printable sheet and editable share link from plain label text. Does not submit a physical print job or save account data. Returns printUrl, editUrl, and importable sheet JSON. Rejects overflow. Positions are 1-based, row-major; copies repeats each label consecutively. Use empty strings for blank slots.

    Annotations the server declares

    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false
Only reads 1Claude Code: allow
  • list_label_templatesList supported physical label templates, dimensions in inches, capacity, and placement geometry.No findings

    Why it is in this group

    • The name "list_label_templates" says "list": a word for reading.
    Description, as the server wrote it
    List supported physical label templates, dimensions in inches, capacity, and placement geometry. Match the user's label stock before creating a sheet.

    Annotations the server declares

    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false

This is not a safety rating, and no finding is not a safety guarantee. The groups and findings come from fixed checks of the tool definitions the server returned on the date shown, not from its code or what it does when called. How the checks work.

Exfil surface

Which tools read private data, which read text someone else can write, and which can send data out. One of each is a path a prompt injection can use.

No private-data, untrusted-input, outbound path in this server alone: no tool is tagged private-data or untrusted-input or outbound.

Reads private data0
Reads files, mail, messages, databases, secrets, calendars or repositories.
Reads text others write0
Brings in text someone else can write: web pages, inbound email, messages, issues and comments.
Can send data out0
Can carry data to people or systems: it sends, posts or publishes, or takes a recipient, channel or URL.

Other servers in the same agent add their own tools to these paths. Audit your whole setup to see them together.

Install

Pinned to version 1.0.0. Values in angle brackets are yours to fill in.

claude mcp add --transport http simplelabtools-labels https://simplelabtools.com/mcp

Run in a terminal.

Claude Code permissions

Allow the reads, ask before a change or a way out, deny the deletes. Paste into .claude/settings.json.

.claude/settings.json
{
  "permissions": {
    "allow": [
      "mcp__simplelabtools-labels__list_label_templates"
    ],
    "ask": [
      "mcp__simplelabtools-labels__create_label_sheet"
    ],
    "deny": []
  }
}

Tools that only read are allowed, tools that change things ask first, tools that delete or cancel are denied. A read that can send data out (it takes a URL, say) asks first too. It assumes the server is installed as simplelabtools-labels. Review it before you use it.