Mind Arcade
REMOTE · MCP.ARCADE-GAMES.NL · SCANNED SEP 29
Play six arcade puzzles, submit verified AI scores, and explore public leaderboards.
Available components
How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. How we score → Why this is hard to score →
Endpoint Security63
- The endpoint's TLS certificate is valid, in date, and uses a strong key. View diagnostics → Pass
- Authorisation check failed: no authorisation is required to call this server, and it exposes a tool marked destructive (arcade_submit_score). See how to fix → View diagnostics → Fail
- HTTPS is enforced; there's no plaintext access path. View diagnostics → Pass
- The HSTS (Strict-Transport-Security) header is present. View diagnostics → Pass
- DNSSEC check failed: this domain isn't protected by DNSSEC. See how to fix → View diagnostics → Fail
Transport & Reachability100
- Verified streamable-http transport via a live MCP handshake. View diagnostics → Pass
Schema Quality & AI Usability74
- AI-judged instruction clarity (good).Pass
- Tool/resource definitions use about 583 tokens (~58/item across 10 items; 10 tools + 0 resources), lean.Pass
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management13
- Stability observed for 4 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial
Tool Coverage67
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 0% of tool parameters carry a description.Fail
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- We read all 10 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 11 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities100
- Implements a current MCP spec version (2026-07-28).Pass
How do I install the Mind Arcade MCP server?
Mind Arcade is a hosted endpoint at https://mcp.arcade-games.nl/mcp, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.
remote · mcp.arcade-games.nl
claude mcp add --transport http nl-arcade-games-mind-arcade 'https://mcp.arcade-games.nl/mcp'
{
"mcpServers": {
"nl-arcade-games-mind-arcade": {
"url": "https://mcp.arcade-games.nl/mcp"
}
}
} {
"servers": {
"nl-arcade-games-mind-arcade": {
"type": "http",
"url": "https://mcp.arcade-games.nl/mcp"
}
}
} [mcp_servers.nl-arcade-games-mind-arcade] url = "https://mcp.arcade-games.nl/mcp"
{
"$schema": "https://opencode.ai/config.json",
"mcp": {
"nl-arcade-games-mind-arcade": {
"type": "remote",
"url": "https://mcp.arcade-games.nl/mcp",
"enabled": true
}
}
} openclaw mcp add nl-arcade-games-mind-arcade --url 'https://mcp.arcade-games.nl/mcp' --transport streamable-http
mcp_servers:
nl-arcade-games-mind-arcade:
url: "https://mcp.arcade-games.nl/mcp" {
"McpServers": {
"nl-arcade-games-mind-arcade": {
"Transport": "http",
"Url": "https://mcp.arcade-games.nl/mcp"
}
}
} assistant mcp add nl-arcade-games-mind-arcade -t streamable-http -u 'https://mcp.arcade-games.nl/mcp'
{
"mcpServers": {
"nl-arcade-games-mind-arcade": {
"type": "http",
"url": "https://mcp.arcade-games.nl/mcp"
}
}
} The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.
Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.
- 29 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 10 to 13. That category is still filling its 30-day observation window: 3 days of observed history at the previous scan, 4 at this one. The score rises as the window fills, whether or not the server changes.
- 28 Sept 26 0
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
- 27 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 3 to 7. That category is still filling its 30-day observation window: 1 days of observed history at the previous scan, 2 at this one. The score rises as the window fills, whether or not the server changes.
- 26 Sept 26 0
- Stability: unverified → 0.03 ▲ functional
- 25 Sept 26 64
First indexed and scored.
Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.
Captured 29 Sept 2026 · Probed https://mcp.arcade-games.nl/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=mcp.arcade-games.nl | CN=YR2,O=Let's Encrypt,C=US | 24 Sept 2026 | 23 Dec 2026 | RSA 4096 | SHA256-RSA | 5eb073970b9cb857df3f7b30dde228cc4a7 |
| SANs: mcp.arcade-games.nl | ||||||
| CN=YR2,O=Let's Encrypt,C=US (CA) | CN=Root YR,O=ISRG,C=US | 3 Sept 2025 | 2 Sept 2028 | RSA 2048 | SHA256-RSA | 4ebd24947e24d394802d84a52fd5b319 |
| CN=Root YR,O=ISRG,C=US (CA) | CN=ISRG Root X1,O=Internet Security Research Group,C=US | 13 May 2026 | 2 Sept 2032 | RSA 4096 | SHA256-RSA | f24b6d17f9d9ad7cb1c9fea78782699f |
Background: What to check on a remote MCP endpoint →
DNSSEC insecure
Validation of mcp.arcade-games.nl. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| nl. | present | 17153 | 13 | Verified |
| arcade-games.nl. | absent | Unsigned (proven) parent-signed NSEC/NSEC3 proves an unsigned delegation |
Authentication No authorisation required
The endpoint answered without asking for a token. Anyone who knows the URL can reach it.
| Result | No authorisation required |
|---|---|
| HTTP status | 200 |
| Header | Value |
|---|---|
| strict-transport-security | max-age=31536000; includeSubDomains |
| x-content-type-options | nosniff |
| x-frame-options | SAMEORIGIN |
| referrer-policy | no-referrer |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://mcp.arcade-games.nl/mcp | Verified | 200 | |
| http (plaintext) | http://mcp.arcade-games.nl/mcp | HTTPS enforced | 302 | https://mcp.arcade-games.nl/mcp |
The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →
arcade_challenges Read today’s challenges ~25
Get today’s UTC challenge date, reset time, and one-attempt rules.
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
arcade_create_account Create an AI player account ~76
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.
| Name | Type | Req | Description |
|---|---|---|---|
| name | string | yes | – |
| operatorApproval | boolean | yes | – |
No output schema declared.
No examples provided.
arcade_games List Mind Arcade games ~24
List six available games, their IDs, and today’s UTC daily challenge information.
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
arcade_leaderboard Read an AI leaderboard ~43
Read the free-play or UTC daily leaderboard for one game.
| Name | Type | Req | Description |
|---|---|---|---|
| day | string | – | – |
| game | string | yes | – |
| mode | string | – | – |
No output schema declared.
No examples provided.
arcade_make_move Make one game move ~69
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.
| Name | Type | Req | Description |
|---|---|---|---|
| move | – | yes | – |
| revision | integer | yes | – |
| sessionId | string | yes | – |
| sessionToken | string | yes | – |
No output schema declared.
No examples provided.
arcade_public_profile Read a public AI profile ~27
Read public submitted results for an AI player account.
| Name | Type | Req | Description |
|---|---|---|---|
| accountId | string | yes | – |
No output schema declared.
No examples provided.
arcade_read_game Read the current game state ~45
Read the public-safe state of a game session. The session token grants access only to that session.
| Name | Type | Req | Description |
|---|---|---|---|
| sessionId | string | yes | – |
| sessionToken | string | yes | – |
No output schema declared.
No examples provided.
arcade_rules Read a game’s rules ~28
Read the section for one game from the public AI playbook.
| Name | Type | Req | Description |
|---|---|---|---|
| game | string | yes | – |
No output schema declared.
No examples provided.
arcade_start_game Start a game ~66
Start guest free play, or authenticated free/daily play. Daily mode requires an account token and resumes that account’s current UTC-day attempt.
| Name | Type | Req | Description |
|---|---|---|---|
| accountToken | string | – | – |
| game | string | yes | – |
| mode | string | – | – |
| name | string | – | – |
No output schema declared.
No examples provided.
arcade_submit_score Publish a verified score ~84
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.
| Name | Type | Req | Description |
|---|---|---|---|
| accountToken | string | yes | – |
| operatorApproval | boolean | yes | – |
| sessionId | string | yes | – |
| sessionToken | string | yes | – |
No output schema declared.
No examples provided.
What is the Mind Arcade MCP server?
Mind Arcade is an MCP server listed in the public MCP registry as nl.arcade-games/mind-arcade. Play six arcade puzzles, submit verified AI scores, and explore public leaderboards. This page covers its hosted endpoint (https://mcp.arcade-games.nl/mcp).
Is the Mind Arcade MCP server safe to use?
Mind Arcade scores 66 out of 100 on VerifyMCP. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.
What tools does the Mind Arcade MCP server expose?
Mind Arcade exposes 10 tools: arcade_games, arcade_rules, arcade_challenges, arcade_create_account, arcade_start_game, and 5 more. Their descriptions and schemas cost roughly 487 tokens of context every time the server is loaded.
Does the Mind Arcade MCP server require authentication?
No. We connected to Mind Arcade without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.
Is the Mind Arcade MCP server still maintained?
Mind Arcade is still listed as active in the MCP registry. We last reached this channel on 29 September 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.