# RIFFCADE

> Free, ad-free open-source browser games that open and play right inside the chat.

- name: com.riffcade/arcade
- version: 1.0.0
- connection class: R0 (autonomous)
- trust: 83/100 flags: no-repository
- quality: 85/100 (new)
- owner: not claimed
- descriptor: https://api.protogrid.dev/v1/servers/com.riffcade%2Farcade
- tools: https://api.protogrid.dev/v1/servers/com.riffcade%2Farcade/tools

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

## Connection (mcpServers)

```json
{
  "mcpServers": {
    "arcade": {
      "type": "http",
      "url": "https://mcp.riffcade.com/mcp"
    }
  }
}
```


## Trust

- hygiene: 80
- liveness: 100
- freshness: 100
- provenance: 55
- drivers: +dns-namespace +website +reachable +uptime-100% +updated-7d-ago -no-repository
- Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed.

## Quality 85/100 (new)

### protocol: 75 (weight 25)

- warn `protocol.modern`: newest supported version is 2025-11-25; 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: 93 (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`: 4 of 4 tools declare readOnlyHint or destructiveHint
- warn `tools.directory_hints`: 1 of 4 tools declare all four hints; missing: show_arcade (idempotentHint); play_game (idempotentHint); new_games (idempotentHint)
- pass `tools.token_cost`: about 395 tokens to load every tool
- pass `tools.api_dump`: tools are not a one-to-one API dump

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

- n/a `stability.changes`, `stability.rug_pull`: tool history recorded for 6 of the 7 days needed

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

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

- tools: 4, about 395 tokens to load them all
- tool set hash: 989da48e35ee262b7f81f84adc155895
- badge: [![protogrid quality](https://protogrid.dev/badge/com.riffcade/arcade.svg)](https://protogrid.dev/servers/com.riffcade/arcade)
- 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://mcp.riffcade.com/mcp (streamable-http, auth none, reachable true, uptime30d 1)

## Packages

_none_

## Tools (4)

- `new_games`: Show the games added to the RIFFCADE most recently (new games arrive twice a day).
- `play_game`: Open one RIFFCADE game ready to play, by its name or slug.
- `rate_game`: Record the user's 1-5 star rating for an RIFFCADE game. Only call when the user gives a rating.
- `show_arcade`: Show the RIFFCADE: free open-source browser games that play well on a phone. Use when the user asks for RIFFCADE, the arcade, or a game to play or browse. Optional category filter (Puzzle, Arcade, Action, Racing, Strategy, Idle, Word & Math, 3D, Retro, 2-Player) or a search word.