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LeagueNight

io.github.everyai-com/league-nighteveryai-comstreamable-httpv1.0.0Scanned

Round-robin fixtures, standings and match-day plans for league organizers. Free.

4 tools: 4 change things.

Tools: 0 delete, 0 irreversible, 4 write, 0 read.
  • Reads private data · 0
  • Reads text others write · 0
  • Can send data out · 0
  • 1 finding

Tools listed without sign-in. Remote posture

Anlyon alternative

4 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 →
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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 4Claude Code: ask
  • match_day_planCompute a one-day timetable: lay an ordered list of games onto parallel courts and fixed-length time slots from a start time, giving each game a court and HH:MM start, plus the end…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
    Compute a one-day timetable: lay an ordered list of games onto parallel courts and fixed-length time slots from a start time, giving each game a court and HH:MM start, plus the end time. Use when you already know the day's games. Do NOT use to decide who plays whom (use round_robin_schedule) or to size a whole season (use season_plan).

    Annotations the server declares

    • title: Match day plan
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false
  • round_robin_scheduleCompute a round-robin fixture list (circle method) for 2-100 teams: every pair meets once, or twice home-and-away with second_leg; odd counts get one bye per round.1 finding

    Why it is in this group

    • The name "round_robin_schedule" says "schedule": 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 "round_robin_schedule" 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 "round_robin_schedule" says "schedule": a word for a change.

      What this check looks for
    Description, as the server wrote it
    Compute a round-robin fixture list (circle method) for 2-100 teams: every pair meets once, or twice home-and-away with second_leg; odd counts get one bye per round. Use when you need who plays whom in each round. Do NOT use to assign times/courts for one match day (use match_day_plan) or to get calendar dates for a season (use season_plan).

    Annotations the server declares

    • title: Round robin schedule
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false
  • season_planEstimate a season's size and calendar: total round-robin fixtures, games per match day (limited by courts, one slot per day), match days needed, every match-day date from start_dat…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
    Estimate a season's size and calendar: total round-robin fixtures, games per match day (limited by courts, one slot per day), match days needed, every match-day date from start_date at a fixed interval, and the finish date. Use for "when will the season end?". Do NOT use for pairings (use round_robin_schedule) or one day's timetable (use match_day_plan).

    Annotations the server declares

    • title: Season plan
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false
  • standings_tableCompute a league standings table from match results: played, W/D/L, goals for/against, goal difference and points, sorted by points, then goal difference, then goals for, then name…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
    Compute a league standings table from match results: played, W/D/L, goals for/against, goal difference and points, sorted by points, then goal difference, then goals for, then name. Use when you have scores and want the current table. Do NOT use to generate future fixtures (use round_robin_schedule).

    Annotations the server declares

    • title: Standings table
    • 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.

Remote posture

What anyone on the internet sees at the remote endpoint: an anonymous initialize and tools/list, and the public OAuth metadata.

Tools listed without sign-in

Looked at Oct 22, 2026, 15:20 UTC, unchanged since Oct 22, 2026. No credentials were sent and no tool was called. What is looked at.

Reachable
yes
HTTP status of an anonymous initialize
200
tools/list served without credentials
yes
Tools that change things, listed without credentials
4
Protocol version
2025-06-18
WWW-Authenticate on 401
not observed
resource_metadata in WWW-Authenticate
not observed
RFC 9728 protected resource metadata
not observed
Authorization servers
not observed
Legacy HTTP+SSE transport
no
Dynamic client registration
not observed
Client ID metadata documents
not observed
  • WarnThe whole server

    The endpoint served tools/list without credentials, and the list has 4 tools that change things (4 write). Whether a call also works without credentials was not tested: tools are never called.

    Matched text

    https://league-night.magicteams.ai/mcp: tools/list returned 4 tools to an anonymous client, including round_robin_schedule (write), standings_table (write), match_day_plan (write), season_plan (write)

    What this check looks for

Findings

Matches of fixed checks, with the text they matched.

1 warn
  • Warnround_robin_schedule

    The server marks "round_robin_schedule" 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 "round_robin_schedule" says "schedule": a word for a change.

    What this check looks for

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.

All changes to this server

Install

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

claude mcp add --transport http league-night https://league-night.magicteams.ai/mcp
claude mcp add --transport http league-night https://league-night.magicteams.ai/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": [],
    "ask": [
      "mcp__league-night__round_robin_schedule",
      "mcp__league-night__standings_table",
      "mcp__league-night__match_day_plan",
      "mcp__league-night__season_plan"
    ],
    "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 league-night. Review it before you use it.

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/io.github.everyai-com/league-night/verify?hash=3a61d35d4e8b3058c92ed5e177a19f8f013709f497bf4b42a5831f124a6034c3" | jq -e '.changed == false'

Pinned hash 3a61d35d4e8b, from Oct 21, 2026, 19:33 UTC.

Watch

Get told when its tools change: a new tool, a new description, a new class.

https://anlyon.dev/servers/io.github.everyai-com/league-night/changes.xml

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anlyon.dev badge for io.github.everyai-com/league-night
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Source: MCP Registry · repository. Synced Oct 21, 2026, 18:33 UTC.