Start a game from Slack, Claude or Codex

Make a team chess game without leaving where your team already is. You get a link; everyone who opens it picks a side and votes on each move.

These only make the game and hand back its link. The moves are always people's: nothing here can play or vote.

Slack

Add TeamChess to your workspace once. Then in any channel, type the two teams:

/teamchess Sales vs Dev

TeamChess posts the game in the channel with a Join the game button. Add a clock at the end if you like, such as /teamchess Kids vs Parents 5+5. /teamchess help lists the clocks.

Add to Slack

It only asks for the slash command. It can't read your messages.

Claude Code

Install the plugin. In Claude Code, run:

/plugin marketplace add eyal-gor/teamchess-plugin
/plugin install teamchess@teamchess

Or add only the connector, from your terminal: claude mcp add --transport http teamchess https://teamchess.co/mcp

Then ask for a game in plain words:

Make a team chess game, Frontend vs Backend, 10 minutes
Made a team chess game: Frontend vs Backend. Link to share: teamchess.co/j/FNGP

Claude app claude.ai, desktop, phone

  1. Open Settings, then Connectors.
  2. Choose Add custom connector, name it TeamChess, and paste this address:
https://teamchess.co/mcp

In a chat, ask for a game the same way: "Start a TeamChess game, Marketing vs Sales." Claude asks before it makes the game.

ChatGPT

  1. Open Settings, then Apps & Connectors, and under Advanced turn on Developer mode.
  2. Choose Create, name it TeamChess, set authentication to None, and paste this address:
https://teamchess.co/mcp

In a chat, ask: "Make a TeamChess game, Design vs Product."

Codex

Add these two lines to ~/.codex/config.toml:

[mcp_servers.teamchess]
url = "https://teamchess.co/mcp"

Restart Codex and ask: "Create a team chess game, Ops vs Legal, 5+5." Older versions of Codex may need an update to connect to an address like this.

Anything else

Any app that takes an MCP server by address (Cursor, VS Code, Windsurf and others) can use the same one:

https://teamchess.co/mcp

What it can do

create_game, with two team names (up to 24 letters each) and a clock: 3+2, 5, 5+5, 10, 15, 30, 60 or 90 minutes. Without a clock it's 10 minutes. It answers with the game's link and its code.

create_tournament, with a name and up to 16 teams, and edit_tournament to change them before it starts. It answers with a link to share and an organizer link with the Start button.

No sign-in or key. Privacy

Or just make one here

Create a game on teamchess.co