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Pairloop Doubles Mixer

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

Rotate partners, print & score

Changes · 3
CompareRegistry entry

3 tools: 3 change things.

Scanned Oct 22, 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 doubles-mixer https://doubles-mixer.zovo.one/mcp

Findings

Matches of fixed checks, with the text they matched.

1 warn
  • Warngenerate_mixer_schedule

    The server marks "generate_mixer_schedule" 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 "generate_mixer_schedule" 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.

3 tools

Changes things 3Claude Code: ask
  • check_mixer_fairnessUse this when the user wants to check social doubles schedule limits before making a rotating partners schedule.No findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    • The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
    Description, as the server wrote it
    Use this when the user wants to check social doubles schedule limits before making a rotating partners schedule. Reports usable courts, balanced sit-out totals, unavoidable consecutive rests and a counting lower bound on partner repeats for 4 to 48 players and 1 to 24 rounds. Does not claim that bounded scheduling reaches the lower bound or balance player ratings.

    Annotations the server declares

    • title: Check mixer fairness limits
    • readOnlyHint: true
    • destructiveHint: false
    • openWorldHint: false
  • generate_mixer_scheduleUse this when the user wants a pickleball round robin generator, pickleball mixer, rotating partners schedule, tennis mixer schedule or padel americano.1 finding

    Why it is in this group

    • The name "generate_mixer_schedule" 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_mixer_schedule" 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 "generate_mixer_schedule" says "generate": a word for a change.

      What this check looks for
    Description, as the server wrote it
    Use this when the user wants a pickleball round robin generator, pickleball mixer, rotating partners schedule, tennis mixer schedule or padel americano. Makes balanced rests, partner rotations, a fairness summary, printable PDF score sheets and CSV for 4 to 48 players, 1 to 12 courts and 1 to 24 rounds. Does not balance ratings or make fixed-team brackets; bounded optimization can leave partner repeats above the lower bound.

    Annotations the server declares

    • title: Generate rotating doubles schedule
    • readOnlyHint: true
    • destructiveHint: false
    • openWorldHint: false
  • score_mixer_standingsUse this when the user wants individual standings from a social doubles schedule and game scores.No findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    • The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
    Description, as the server wrote it
    Use this when the user wants individual standings from a social doubles schedule and game scores. Counts wins, losses, draws, points for, points against, difference and win percent for up to 48 players and 288 scores. Accepts a generated schedule_request or an indexed schedule; unscored games stay pending. Does not use rating systems or governing tournament rules.

    Annotations the server declares

    • title: Score individual mixer standings
    • 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 doubles-mixer https://doubles-mixer.zovo.one/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": [],
    "ask": [
      "mcp__doubles-mixer__generate_mixer_schedule",
      "mcp__doubles-mixer__score_mixer_standings",
      "mcp__doubles-mixer__check_mixer_fairness"
    ],
    "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 doubles-mixer. Review it before you use it.