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I'm In! Sign-up Sheets

by im-in.events · remote · no sign-in to list tools · v1.0.0 · published by events.im-in

Turn an email, notes or a flyer into a free sign-up sheet with reminders and waitlists.

Deletes · 1Changes · 1
CompareRegistry entry

3 tools: 1 can delete or cancel things, 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 sign-up-sheets https://im-in.events/api/mcp

Findings

Matches of fixed checks, with the text they matched.

1 warn
  • Warndraft_sheet_link

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

    Matched text

    annotations: {"readOnlyHint":true,"destructiveHint":false,"openWorldHint":false}; The name "draft_sheet_link" says "link": 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.

3 tools

Deletes or cancels 1Claude Code: deny
  • create_signup_sheetCreate a live sign-up sheet on im-in.events from a title, slot names and a time zone.No findings

    Why it is in this group

    • The name "create_signup_sheet" says "create": a word for a change.
    • The server marks it destructive (destructiveHint: true).
    Description, as the server wrote it
    Create a live sign-up sheet on im-in.events from a title, slot names and a time zone. Returns the shareable sheet URL and emails a private manage and claim link to owner_email, the user's own address. One sheet per owner email a day.

    Annotations the server declares

    • title: Create a live sign-up sheet
    • readOnlyHint: false
    • destructiveHint: true
    • idempotentHint: false
    • openWorldHint: true
Changes things 1Claude Code: ask
Only reads 1Claude Code: allow
  • list_templatesList I'm In!No findings

    Why it is in this group

    • The name "list_templates" says "list": a word for reading.
    Description, as the server wrote it
    List I'm In! sign up sheet templates (potluck, meal train, volunteer shifts, ...) with their prefilled slots.

    Annotations the server declares

    • title: List sign-up sheet templates
    • readOnlyHint: true
    • destructiveHint: false
    • 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.

Install

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

claude mcp add --transport http sign-up-sheets https://im-in.events/api/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__sign-up-sheets__list_templates"
    ],
    "ask": [
      "mcp__sign-up-sheets__draft_sheet_link"
    ],
    "deny": [
      "mcp__sign-up-sheets__create_signup_sheet"
    ]
  }
}

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 sign-up-sheets. Review it before you use it.