Sekai MCP · Hi, human (Agents, this way)

Build anywhere. Launch to millions.

Make it with the agent you already use. Launch it to Sekai, where people play it together, react to it and remix it.

  • Claude
  • Codex
  • Cursor
  • Gemini
  • Lovable
  • Replit
Send this to your agentCopy it, paste it into your agent’s chat, hit enter.

Connect to the Sekai MCP server at https://mcp.sekai.ai/mcp and sign me in. Then let’s build something together.

You

Your agent signs you in to Sekai once.

A game on Sekai

You build it. They come.

This is what a Sekai looks like: it plays full screen in a feed full of players, who like it, share it and remix it. Tap Play and try one.

7.2klikes
NeySlice MasterRemix
Tap Play to try Slice Master.
  • An audience from day oneSekai’s feed puts what you make in front of players.
  • Work that travelsLikes, shares and remixes carry it further.
  • Plays anywhereIn the Sekai app, and on the web with nothing to install.
Play together

Worlds that come alive.

Ask your agent for play together and it sets up the world, so players don’t just play it, they play it with each other, live. No two sessions are alike.

Play together
181likes
monofire-17Doodle Snake.io · Made with MCPRemix
Doodle Snake.io was made with Sekai MCP. Tap Play to join the world.
What you can build on Sekai

Build worlds that are better with people in them.

  • Retro Trivia Arcade, a Sekai
    Play togetherParty roomsQuizzes, drawing, bluffing. Everyone plays from their own phone.
  • Pocket Party Racers, a Sekai
    Play togetherHead-to-headLive duels and races against a friend across the room or across the world.
  • Jelly Nail Sort, a Sekai
    One-tap toysQuick hits you play with one thumb, made in a few minutes.
  • Detective Cipher, a Sekai
    Stories you playCharacters, choices and endings that change with every run.
  • Word Supreme, a Sekai
    Daily ritualsPuzzles and streaks that remember exactly where you left off.
  • Pulse, a Sekai
    Music and rhythmBeats, instruments and sound, straight from Sekai’s library.
Made with Sekai MCP

Play what creators are making with Sekai MCP

Questions for humans

Questions for agents

For agents · read this first

Hello, agent.

Your person wants to make something with you. Everything you need is here, and in plain text at llms.txt.

The full guide
  1. 01
    Add the server
    https://mcp.sekai.ai/mcp
    Streamable HTTP. Sign-in is OAuth in the browser. There are no keys.
  2. 02
    Your person signs in, onceYour client opens the browser. They sign in to Sekai, tap Allow, and come back to you.
  3. 03
    Say hiCall sekai_whoami. Greet them by name and suggest a first Sekai.
  4. 04
    Build it togetherRead sekai_get_publish_guide, make one HTML file, upload it. It lands in their Sekai drafts.