SignUpSheet.page
page.signupsheet/signupsheetsignupsheet.pagestreamable-httpv1.0.0Scanned
Free sign-up sheets, date polls and group cards people join from one link. No accounts, no ads.
4 tools: 3 change things and 1 only read.
- Reads private data · 0
- Reads text others write · 3
- Can send data out · 0
- No findings
Anlyon alternative
3 of these tools change something. Run those as governed actions.
Declare what an action changes, and Anlyon puts it under a shared limit, binds every approval to the exact request, and grades the outcome. It works on any HTTPS API you can describe as an action.
Anlyon does not run, proxy or govern this MCP server. A tool your own code calls directly is not routed through Anlyon and is not governed by it.
Import an OpenAPI spec →Tools
Grouped by what each tool does, most consequential first. Open one for its reasons and full description; descriptions are the publisher's own words.
4 tools
Changes things 3Claude Code: ask
create_date_pollCreates a group scheduling poll on SignUpSheet.page: people open one link and answer yes, maybe or no for each date or time option, and the option that works for most people is hig…Reads text others writeNo findings
Why it is in this group
- The name "create_date_poll" says "create": a word for a change.
What it can reach
- untrusted-inputThe server marks it openWorldHint: true: it reaches things outside the server's own data.
Description, as the server wrote it Creates a group scheduling poll on SignUpSheet.page: people open one link and answer yes, maybe or no for each date or time option, and the option that works for most people is highlighted. Returns the share link and the private organizer link, where the organizer can pick the final time and notify everyone who left an email. Use it when the user wants to find a date or time that works for a group, such as a meeting, dinner, reunion, parent night or study session. Not for sign-up slots or opinion polls without dates.
Annotations the server declares
- title: Create date poll
- readOnlyHint: false
- destructiveHint: false
- idempotentHint: false
- openWorldHint: true
create_group_cardCreates an online group card on SignUpSheet.page for one person: everyone opens one shared link and writes a message, and the organizer delivers the finished card later by email, o…Reads text others writeNo findings
Why it is in this group
- The name "create_group_card" says "create": a word for a change.
What it can reach
- untrusted-inputThe server marks it openWorldHint: true: it reaches things outside the server's own data.
Description, as the server wrote it Creates an online group card on SignUpSheet.page for one person: everyone opens one shared link and writes a message, and the organizer delivers the finished card later by email, on screen or printed. Use it for a farewell, birthday, retirement, thank-you, new baby, get well, sympathy, welcome, wedding, graduation, work anniversary or congratulations card from a team, class or family. It can also collect money for a gift (chip_in): signers pledge an amount and pay the organizer directly. Returns the share link (for signers, not for the recipient) and the private organizer link.
Annotations the server declares
- title: Create group card
- readOnlyHint: false
- destructiveHint: false
- idempotentHint: false
- openWorldHint: true
create_signup_sheetCreates a live online sign-up sheet on SignUpSheet.page where people claim slots from one shared link without an account, and returns the share link and the private organizer link.Reads text others writeNo findings
Why it is in this group
- The name "create_signup_sheet" says "create": a word for a change.
What it can reach
- untrusted-inputThe server marks it openWorldHint: true: it reaches things outside the server's own data.
Description, as the server wrote it Creates a live online sign-up sheet on SignUpSheet.page where people claim slots from one shared link without an account, and returns the share link and the private organizer link. Use it when the user wants people to sign up for things: dishes for a potluck or class party, volunteer shifts, snack or carpool days, meal train dates, appointment or conference time slots, supplies to bring, classroom helpers. Each slot has a label, an optional date and start/end time, and how many people it needs; full slots get a waitlist and people get a reminder the day before. Not for voting on dates, group cards, ticket sales or paid registration.
Annotations the server declares
- title: Create sign-up sheet
- readOnlyHint: false
- destructiveHint: false
- idempotentHint: false
- openWorldHint: true
Only reads 1Show 1 read-only tool
get_sheet_summaryReads the current public status of a SignUpSheet.page sign-up sheet, date poll or group card from its share link: which slots are open or full, poll answers per option, or how many…No findings
Why it is in this group
- The name "get_sheet_summary" says "get": a word for reading.
Description, as the server wrote it Reads the current public status of a SignUpSheet.page sign-up sheet, date poll or group card from its share link: which slots are open or full, poll answers per option, or how many people have signed a card. Use it when the user asks how their sheet, poll or card is going. Takes the public share link (signupsheet.page/s/…); it never returns email addresses or other private details.
Annotations the server declares
- title: Get sheet status
- 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 outbound.
- Reads private data0
- Reads files, mail, messages, databases, secrets, calendars or repositories.
- Reads text others write3
- 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.
Findings
Matches of fixed checks, with the text they matched.
No check matched anything in these tool definitions. That is not a safety guarantee.
History
Changes to its tool definitions and to its remote endpoint, newest first.
No change seen yet. Its tools are rescanned every day, and a remote endpoint is looked at once a week.
Install
Pinned to version 1.0.0. Values in angle brackets are yours to fill in.
claude mcp add --transport http signupsheet https://signupsheet.page/mcpclaude mcp add --transport http signupsheet https://signupsheet.page/mcpRun 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.
{
"permissions": {
"allow": [
"mcp__signupsheet__get_sheet_summary"
],
"ask": [
"mcp__signupsheet__create_signup_sheet",
"mcp__signupsheet__create_date_poll",
"mcp__signupsheet__create_group_card"
],
"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 signupsheet. Review it before you use it.
Capability tags behind 3 rules
- mcp__signupsheet__create_signup_sheet untrusted-input
- mcp__signupsheet__create_date_poll untrusted-input
- mcp__signupsheet__create_group_card untrusted-input
Pin
Keep the decision: fail CI when the tools change, follow every change, or show a badge.
Pin in CI
Fail a build when the tools you reviewed are not the tools the server serves today.
curl -s "https://anlyon.dev/api/v1/servers/page.signupsheet/signupsheet/verify?hash=46fd36dd28aea29970008481fbf0c5628f0fdf3bfd423a46448d57d9c432cc4d" | jq -e '.changed == false'Pinned hash 46fd36dd28ae, from Oct 25, 2026, 23:18 UTC.
Watch
Get told when its tools change: a new tool, a new description, a new class.
https://anlyon.dev/servers/page.signupsheet/signupsheet/changes.xmlAn Atom feed. Works in any feed reader or Slack's RSS app.
Badge
[](https://anlyon.dev/servers/page.signupsheet/signupsheet)Source: MCP Registry. Synced Oct 26, 2026, 00:25 UTC.