Skip to content
Coronet Arcade logo

Coronet Arcade MCP server

Which MCP servers are Coronet Arcade's own, from the official registry and from asking its own domain, whether they answer, and what they offer. A program checked each of these, nobody copied them from a product page.

read 2026-10-27

← Back to Coronet Arcade

Whose server it is
  • Registry nameone.coronet/coronet-arcadeverified in the MCP registry

The registry name sits under coronet.one. The registry only lets a publisher use that namespace after proving control of the domain through DNS or HTTP.

When we asked itchecked 2026-10-27
  • Stateanswerschecked 2026-10-27
  • Tools3
  • Server calls itselfcoronet-arcade
  • Server version0.1.0
  • Protocol version2025-06-18

On 2026-10-27 the server answered initialize and tools/list without a sign-in. First answer in 130 ms.

Should an agent connect itNot proven either way yet
  • 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.

Measured dailydaily checks: 1, the first on 2026-10-27
  • 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 answer278 ms
  • Space in an agent's context≈ 479 tokensthe definitions of all its tools (3), which an agent carries on every turn
  • Tool definitionsA · 100 of 100
  • Typed results0 of 3 toolsdeclared outputSchema: results come typed, read once
  • Every tool passes all six checks.

Worth a look

None of the five warning signs in these definitions.

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 →

Tools it offers3 tools · read 2026-10-27
  • list_dailies

    List today's thirteen puzzles, their blurbs, and exact daily ids. No answers. Use open_daily to play one or the hub, and get_rules to explain a game without opening it.

  • open_daily

    Open a playable daily, or the thirteen-puzzle hub when game is omitted or hub. Pass a game id to open that board; game defaults to hub. Progress stays in the widget and does not sync to the website. Do not reveal solutions. Use…

  • get_rules

    Explain one game's rules and controls as titled steps, never a puzzle answer. Required game is a game id, not a board. Use this to teach a game. Use list_dailies to browse today's puzzles and open_daily to play.

How to connect

Add the server to your MCP client config. Claude Desktop, Cursor and most other clients read this shape:

{
  "mcpServers": {
    "coronet-arcade": {
      "type": "http",
      "url": "https://coronet.one/mcp"
    }
  }
}

Add it

Claude Code, in a terminal

claude mcp add --transport http coronet https://coronet.one/mcp

Add to CursorAdd to VS Code

claude.ai, ChatGPT and other clients: add https://coronet.one/mcp as a custom connector in the settings.

OpenAPI spec

5 paths, read 2026-10-27. Open the spec ↗

Each line is something a program found when it went looking: the registry entry, the server's own answer, a spec that parses. A missing line means we did not find it, not that it does not exist.