# Ladderboard — round-robin ladders and match scores for small clubs

> Round-robin ladders and match scores for small clubs. Players join by QR poster; no app, no account.

- name: app.rowb.ladder/board
- version: 1.0.0
- connection class: R1 (autonomous)
- trust: 82/100 flags: no-repository
- quality: 79/100 (good)
- owner: not claimed
- descriptor: https://api.protogrid.dev/v1/servers/app.rowb.ladder%2Fboard
- tools: https://api.protogrid.dev/v1/servers/app.rowb.ladder%2Fboard/tools

**An agent can connect on its own if it already holds `BOARD_TOKEN`.** Remote endpoint behind a static API key or header. The registry never sees the value; the agent fills the placeholder.

## Connection (mcpServers)

```json
{
  "mcpServers": {
    "board": {
      "type": "http",
      "url": "https://ladder.rowb.app/mcp",
      "headers": {
        "Authorization": "Bearer ${BOARD_TOKEN}"
      }
    }
  }
}
```

Placeholders to fill: `${BOARD_TOKEN}`.

## Trust

- hygiene: 80
- liveness: 99
- freshness: 100
- provenance: 55
- drivers: +dns-namespace +website +reachable +uptime-97% +updated-25d-ago -no-repository
- Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed.

## Quality 79/100 (good)

### protocol: 75 (weight 25)

- warn `protocol.modern`: newest supported version is 2025-06-18; 2026-07-28 not supported, older versions are deprecated until 2027-07-28
- n/a `protocol.stateless`: only applies to 2026-07-28 servers
- pass `protocol.transport`: streamable HTTP
- n/a `protocol.list_ttl`: only applies to 2026-07-28 servers

### authorization: n/a (weight 15)

- n/a `auth.prm`, `auth.as_metadata`, `auth.cimd`: no remote uses OAuth
- n/a `auth.secret_in_url`: no templated URL

### tool hygiene: 71 (weight 30)

- pass `tools.descriptions`: every tool has a description
- pass `tools.description_length`: descriptions are concise
- pass `tools.schemas`: every tool has an object input schema
- fail `tools.annotations`: no tool declares readOnlyHint or destructiveHint, so clients cannot tell safe calls from risky ones
- fail `tools.directory_hints`: no tool declares all four of readOnlyHint, destructiveHint, idempotentHint and openWorldHint; missing: add_player (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); schedule_match (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); get_standings (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); …
- pass `tools.token_cost`: about 360 tokens to load every tool
- pass `tools.api_dump`: tools are not a one-to-one API dump

### stability: 100 (weight 15)

- pass `stability.changes`: no tool changes in 30 days
- pass `stability.rug_pull`: no tool changed its meaning under the same name

### dependencies: n/a (weight 15)

- n/a `deps.known_vulns`, `deps.mcp_sdk_version`, `deps.resolvable`: no npm or PyPI package

- tools: 5, about 360 tokens to load them all
- tool set hash: 5ea5caf613f2e75261f659ab38d0f8a6
- badge: [![protogrid quality](https://protogrid.dev/badge/app.rowb.ladder/board.svg)](https://protogrid.dev/servers/app.rowb.ladder/board)
- Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed.

### Tool changes

_No tool definition changes recorded._

## Remotes

- https://ladder.rowb.app/mcp (streamable-http, auth api_key ${BOARD_TOKEN}, reachable true, uptime30d 0.96875)

## Packages

_none_

## Tools (5)

- `add_player`: Register one player by name. Returns a 6-character code and a personal URL so the player can be identified at the courts without an account.
- `create_ladder`: Create or update the club ladder: club name and sport. Returns the join URL (the poster target) that players scan.
- `get_standings`: The current table (rank, wins, losses, set percentage) plus the single most useful match to play next. Standings are computed with a fixed rule order, so the same results always give the same table.
- `record_match`: Record a finished match result. Identify players by name, numeric id, or 6-character code. Give the set score (sets_a, sets_b) and optionally the games.
- `schedule_match`: Put a match on the calendar before it is played. It appears as a pending card in the standings output.