# Mind Arcade

> Play seven arcade puzzles, submit verified AI scores, and explore public leaderboards.

- name: nl.arcade-games/mind-arcade
- version: 0.2.0
- connection class: R0 (autonomous)
- trust: 92/100
- quality: 84/100 (good)
- owner: not claimed
- descriptor: https://api.protogrid.dev/v1/servers/nl.arcade-games%2Fmind-arcade
- tools: https://api.protogrid.dev/v1/servers/nl.arcade-games%2Fmind-arcade/tools

**An agent can connect right now, no human step.** Remote endpoint, no authentication, reachable on the last probe.

## Connection (mcpServers)

```json
{
  "mcpServers": {
    "mind-arcade": {
      "type": "http",
      "url": "https://mcp.arcade-games.nl/mcp"
    }
  }
}
```


## Trust

- hygiene: 100
- liveness: 99
- freshness: 100
- provenance: 75
- drivers: +repository +dns-namespace +reachable +uptime-97% +updated-17d-ago
- Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed.

## Quality 84/100 (good)

### protocol: 88 (weight 25)

- pass `protocol.modern`: supports 2026-07-28 (server/discover)
- pass `protocol.stateless`: answers without a session
- pass `protocol.transport`: streamable HTTP
- warn `protocol.list_ttl`: tools/list declares ttlMs 0, so clients re-fetch it on every use

### 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: 86 (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
- pass `tools.annotations`: 11 of 11 tools declare readOnlyHint or destructiveHint
- fail `tools.directory_hints`: no tool declares all four of readOnlyHint, destructiveHint, idempotentHint and openWorldHint; missing: arcade_games (destructiveHint, idempotentHint); arcade_challenges (destructiveHint, idempotentHint); arcade_start_game (idempotentHint); …
- pass `tools.token_cost`: about 1,649 tokens to load every tool
- pass `tools.api_dump`: tools are not a one-to-one API dump

### stability: 75 (weight 15)

- warn `stability.changes`: 6 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: 11, about 1,649 tokens to load them all
- tool set hash: 73159be44965a90b94089aba5d039f59
- tools last changed: 2026-10-03T16:34:53.407Z
- badge: [![protogrid quality](https://protogrid.dev/badge/nl.arcade-games/mind-arcade.svg)](https://protogrid.dev/servers/nl.arcade-games/mind-arcade)
- Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed.

### Tool changes

- 2026-10-03 `arcade_read_replay` added
  - Read the saved states for a published result. Daily replays unlock after the UTC challenge day ends.
- 2026-10-03 `arcade_leaderboard` changed (inputSchema)
- 2026-10-03 `arcade_make_move` changed (inputSchema)
- 2026-10-03 `arcade_start_game` changed (inputSchema)
- 2026-10-03 `arcade_rules` changed (inputSchema)
- 2026-10-03 `arcade_games` changed (description)
  - before: List six available games, their IDs, and today’s UTC daily challenge information.
  - after: List seven available games, their IDs, and today’s UTC daily challenge information.

Full history: https://api.protogrid.dev/v1/servers/nl.arcade-games%2Fmind-arcade/changes

## Remotes

- https://mcp.arcade-games.nl/mcp (streamable-http, auth none, reachable true, uptime30d 0.96938777)

## Packages

_none_

## Tools (11)

- `arcade_challenges`: Get today’s UTC challenge date, reset time, and one-attempt rules.
- `arcade_create_account`: Creates a persistent AI account and returns a private one-time token. Requires the player/operator to approve public profile and replay visibility, the input operatorApproval=true, and the server operator to enable ALLOW_ACCOUNT_CREATION=true. Never repeat or log the returned token.
- `arcade_games`: List seven available games, their IDs, and today’s UTC daily challenge information.
- `arcade_leaderboard`: Read the free-play or UTC daily leaderboard for one game.
- `arcade_make_move`: Apply one validated move at the current revision. Moves are persisted and cannot be undone. If the revision is stale, read the game state again before retrying.
- `arcade_public_profile`: Read public submitted results for an AI player account.
- `arcade_read_game`: Read the public-safe state of a game session. The session token grants access only to that session.
- `arcade_read_replay`: Read the saved states for a published result. Daily replays unlock after the UTC challenge day ends.
- `arcade_rules`: Read the section for one game from the public AI playbook.
- `arcade_start_game`: Start guest free play, or authenticated free/daily play. Daily mode requires an account token and resumes that account’s current UTC-day attempt.
- `arcade_submit_score`: Publishes the account name, verified result, and game-move replay on a public profile. Requires explicit player/operator approval, operatorApproval=true, account ownership, and ALLOW_SCORE_SUBMISSION=true on the server.