This is a simple Reversi game that uses MCP-UI. > Note: Currently, there is no MCP client that fully supports MCP-UI UI Actions, Therefore, please specify the coordinates of the stone position in text (e.g. A1 or H6). However, its greatest feature is that **"the rules of Reversi are decided by the MCP, making it difficult for the AI to cheat the rules of the game."** Because Reversi is simple, AI rarely cheats the game rules, but it's known that AI often cheats when playing more complex games. In this MCP server, the game rules are handled by the MCP, making it difficult for AI to cheat (Note: There are currently some limitations). The structure is relatively simple, so we believe it can be used as a reference for creating similar board games.

MCP readiness

B · 87/100

Readiness is how fully this listing follows its protocol and how it behaved in our probes over 30 days. It is shown for reference and does not move it in search. Search order and leaderboards use the separate quality grade (here C+, 70.0/100), which weighs availability, conformance, p95 speed and descriptor. How the two differ

Valid MCP handshake	10/10	initialize and tools/list both answered.
Live MCP endpoint	24/25	Endpoint answers the MCP initialize handshake (3549 ms); slow response -1.
Protocol revision	8/10	Speaks MCP 2025-11-25, 1 revision(s) behind 2026-07-28.
Signed descriptor	n/a	No MCP standard defines a signed server descriptor.
Uptime (30 days)	15/15	31/31 probes succeeded over 30 days (100%).
Tool declaration	10/10	Lists 4 tool(s) with descriptions.
Verified identity	5/10	Publisher declared (repository, package or homepage); claim this listing to verify domain control.
Freshness + modern flags	4/5	seen in a source within 7 days.
Auth declaration	2/5	Declares credential scheme: smithery_api_key.

Applicable criteria total 90 points, scaled to 100.

Responsiveness: Slow (3549 ms; bands ≤2.5 s, ≤5 s, ≤8 s, slower; penalty only).

Measured 2026-11-11.

Nine criteria, the same as the A2A readiness score, read from our daily MCP probe (initialize + tools/list) and 30-day probe history. No MCP standard defines a signed server descriptor, so that criterion is n/a and the other 90 points are scaled to 100. Grades: A>=90, B>=75, C>=60, D>=40, F<40. Display only: search order uses the quality grade.

Compared with peers

Against 53,039 reachable MCP servers in our daily snapshot (2026-11-12 06:46 UTC). Display only; it does not change search order.

Readiness: Higher than 88% of peers; This listing 87 · peer median 81
Latency: Faster than 5% of peers; This listing 1,189 ms · peer median 326 ms

Where it loses the most points, and how to win them back

Verified identity −5 — Claim the listing and prove control of its domain.
Now: Publisher declared (repository, package or homepage); claim this listing to verify domain control.
Auth declaration −3 — State how to authenticate (an auth scheme, or that none is needed).
Now: Declares credential scheme: smithery_api_key.
Protocol revision −2 — Support the current protocol revision.
Now: Speaks MCP 2025-11-25, 1 revision(s) behind 2026-07-28.

How many agent tools actually work · All statistics

Adoption signals

Public signals from outside this directory, shown for context. They do not change search order or grades.

GitHub: ★ 0 · 0 forks; last push 2025-10-15

Listed in

Directories this entry was found in.

smithery since 2026-06-04 ↗

How to connect

MCP endpoint (streamable-http)

https://server.smithery.ai/mfukushim/reversi-mcp-ui/mcp

JSON-RPC initialize probe

curl -X POST https://server.smithery.ai/mfukushim/reversi-mcp-ui/mcp \
  -H 'Content-Type: application/json' \
  -H 'Accept: application/json, text/event-stream' \
  -d '{"jsonrpc":"2.0","id":1,"method":"initialize","params":{}}'

Homepage

https://github.com/mfukushim/reversi-mcp-ui

Listed at (smithery)

https://github.com/mfukushim/reversi-mcp-ui