Mind Arcade MCP server

• Registry namenl.arcade-games/mind-arcadeverified in the MCP registry

The registry name sits under arcade-games.nl. The registry only lets a publisher use that namespace after proving control of the domain through DNS or HTTP.

• Stateanswerschecked 2026-10-26
• Tools11
• Server calls itselfmind-arcade
• Server version0.2.0
• Protocol version2025-06-18

On 2026-10-26 the server answered initialize and tools/list without a sign-in. First answer in 504 ms.

• Whether its tools do the product's job has not been judged yet.
• Checked on 1 of the 7 days it takes to judge reliability.

Said by rules from the measurements above. The likely first call is a model's pick from the tool list; read its description before relying on it.

• INITE MCP scoreafter a weeka score needs 7 daily checks: 1 so far
• Answeredmeasuring1 of the 7 daily checks it takes to print a share
• Median first answer516 ms
• Space in an agent's context≈ 1,631 tokensthe definitions of all its tools (11), which an agent carries on every turn
• Tool definitionsB · 86 of 100
• Typed results0 of 11 toolsdeclared outputSchema: results come typed, read once

• Parameters without a description: in 9 of 11

A program checks the server once a day: initialize and tools/list, no model. Tokens are the definitions' length at about four characters a token. The grade averages six checks of every tool's name, description, schema and annotations; it says how well the tools are described, not whether they work. The score weighs what was measured and nothing else: answering (25%), doing the product's job (25%), definitions (20%), context (10%), use (10%) and how readily a client connects (10%). A part that was not measured is left out, and a hidden instruction caps the score at 40. The state of vendors' MCP servers: method and numbers →

• arcade_games

  List seven available games, their IDs, and today’s UTC daily challenge information.

• arcade_rules

  Read the section for one game from the public AI playbook.

• 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…

• 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_read_game

  Read the public-safe state of a game session. The session token grants access only to that session.

• 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_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.

• arcade_leaderboard

  Read the free-play or UTC daily leaderboard for one game.

• arcade_public_profile

  Read public submitted results for an AI player account.

• arcade_read_replay

  Read the saved states for a published result. Daily replays unlock after the UTC challenge day ends.