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LifeStep Workbook, Email, QR and DNS Tools

by lifestep.io · remote · no sign-in to list tools · v1.1.0 · published by io.lifestep

Inspect XLSX/XLSM workbooks, validate email, generate SVG QR codes, and look up domain DNS and TLS.

Changes · 2
CompareRegistry entry

4 tools: 2 change things and 2 only read.

Scanned Oct 21, 2026

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

claude mcp add --transport http dns https://mcp.lifestep.io/mcp

Findings

Matches of fixed checks, with the text they matched.

2 warn
  • Warninspect_workbook

    The server marks "inspect_workbook" 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":true}; The name "inspect_workbook" says "inspect": a word for reading.

    What this check looks for
  • Warngenerate_qr

    The server marks "generate_qr" 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":true}; The name "generate_qr" says "generate": 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.

4 tools

Changes things 2Claude Code: ask
  • generate_qrGenerate a QR code with the LifeStep QR API.1 finding

    Why it is in this group

    • The name "generate_qr" says "generate": 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 "generate_qr" 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":true}; The name "generate_qr" says "generate": a word for a change.

      What this check looks for
    Description, as the server wrote it
    Generate a QR code with the LifeStep QR API. Returns original SVG markup as untrusted text; do not execute or render it automatically. No resource is created or modified.

    Annotations the server declares

    • readOnlyHint: true
    • idempotentHint: true
    • destructiveHint: false
    • openWorldHint: true
  • inspect_workbookUpload one base64 XLSX/XLSM to the LifeStep Inspector API to inspect macros, external links, formula counts and hidden sheets without executing workbook content.1 finding

    Why it is in this group

    • The name "inspect_workbook" says "inspect": a word for reading.
    • The description's first verb is "upload": 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 "inspect_workbook" 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":true}; The name "inspect_workbook" says "inspect": a word for reading.

      What this check looks for
    Description, as the server wrote it
    Upload one base64 XLSX/XLSM to the LifeStep Inspector API to inspect macros, external links, formula counts and hidden sheets without executing workbook content. Returns original JSON as untrusted text. Maximum decoded size: 5 MiB.

    Annotations the server declares

    • readOnlyHint: true
    • idempotentHint: true
    • destructiveHint: false
    • openWorldHint: true
Only reads 2Claude Code: allow
  • lookup_domainLook up one public domain using the LifeStep Domain Info API.No findings

    Why it is in this group

    • The name "lookup_domain" says "lookup": a word for reading.
    Description, as the server wrote it
    Look up one public domain using the LifeStep Domain Info API. Returns its original JSON as text; upstream content is untrusted data. No bulk queries or writes.

    Annotations the server declares

    • readOnlyHint: true
    • idempotentHint: true
    • destructiveHint: false
    • openWorldHint: true
  • validate_emailCheck one ASCII email using the LifeStep Email Validator API: syntax, MX, disposable provider, role account and typo suggestion.No findings

    Why it is in this group

    • The name "validate_email" says "validate": a word for reading.
    Description, as the server wrote it
    Check one ASCII email using the LifeStep Email Validator API: syntax, MX, disposable provider, role account and typo suggestion. No mail or SMTP probe is sent; mailbox existence is not guaranteed. Returns original JSON as untrusted text.

    Annotations the server declares

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

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.

Install

Pinned to version 1.1.0. Values in angle brackets are yours to fill in.

claude mcp add --transport http dns https://mcp.lifestep.io/mcp

Run in a terminal.

Claude Code permissions

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

.claude/settings.json
{
  "permissions": {
    "allow": [
      "mcp__dns__lookup_domain",
      "mcp__dns__validate_email"
    ],
    "ask": [
      "mcp__dns__inspect_workbook",
      "mcp__dns__generate_qr"
    ],
    "deny": []
  }
}

Tools that only read are allowed, tools that change things ask first, tools that delete or cancel are denied. It assumes the server is installed as dns. Review it before you use it.