Merser3.1

Merser3.1 by Skyes Over London is the next source-world MCP base copied from the shipped Merser lane. It ships a public npm CLI, local stdio server, local HTTP bridge, Cloudflare Pages worker, and immersive React/R3F world surface for zoomed-out universe viewports and scroll-driven dimensional rooms.

React Three Fiber · Three.js · Drei · Postprocessing · GSAP · Lenis · Framer Motion · Motion · Theatre · Remotion · Cloudflare Pages · Model Context Protocol

Live world: merser3-1.pages.dev NPM package: @skyes0verl0nd0n/merser3-1

Connect To Claude, Cursor, Or Any MCP Client

Option 1 - Local Stdio

{
  "mcpServers": {
    "merser31": {
      "command": "node",
      "args": ["/workspaces/MetrAIyux-0S/.vscode/MCP5-Merser3.1/stdio-server.mjs", "--stdio"]
    }
  }
}

Option 2 - NPM / NPX

npx @skyes0verl0nd0n/merser3-1 --health
npx @skyes0verl0nd0n/merser3-1 --tools
npm exec --yes --package @skyes0verl0nd0n/[email protected] -- Merser --config
npm exec --yes --package @skyes0verl0nd0n/[email protected] -- Merser --stdio

Option 3 - Workspace Bin After Install

cd /workspaces/MetrAIyux-0S/.vscode/MCP5-Merser3.1
npm install
npm run cli -- --health
npm start

{
  "mcpServers": {
    "merser31": {
      "command": "node",
      "args": ["/workspaces/MetrAIyux-0S/.vscode/MCP5-Merser3.1/stdio-server.mjs", "--stdio"]
    }
  }
}

Option 4 - Remote HTTP

{
  "mcpServers": {
    "merser31": {
      "url": "https://merser3-1.pages.dev/mcp"
    }
  }
}

Remote HTTP access must stay gate-owned by the shared 0S/FS27/SkyGate/Free99 lane. The future public endpoint must return 401 without a valid owner-issued bearer or shared gate session.

CLI

node stdio-server.mjs --help
node stdio-server.mjs --version
node stdio-server.mjs --tools
node stdio-server.mjs --config
node stdio-server.mjs --health
node stdio-server.mjs --stdio
npx @skyes0verl0nd0n/merser3-1 --health
npm exec --yes --package @skyes0verl0nd0n/[email protected] -- Merser --tools

The package is published as @skyes0verl0nd0n/merser3-1; installed bin aliases include Merser, merser, Merser31, merser31, and merser3-1.

MCP Tools

| Tool | What it returns | | --- | --- | | mcp5_index | Full Merser index: public URLs, package commands, room ids, pack ids, and tool list | | mcp5_packs | Extracted source-pack manifest from the MCP2/Merser build lane | | mcp5_room | Real-world immersive room specs: barbershop, tattoo, med spa, gym, and source vault | | mcp5_component | Component vault entries pulled from the MCP bridge/source packs | | mcp5_prompt_pack | Prompt packets for using the Merser source-world lane | | mcp5_cli | CLI, local HTTP, deploy, stress, and remote access commands | | mcp5_build_plan | Build plan for turning source packs into immersive world-site artifacts | | mcp5_icons | Skyes/MetrAIyux icon registry and source-pack icon manifest |

Runtime Stack

| Dependency | Version | | --- | --- | | @modelcontextprotocol/sdk | ^1.29.0 | | @react-three/fiber | ^9.6.1 | | @react-three/drei | ^10.7.7 | | @react-three/postprocessing | ^3.0.4 | | three | ^0.184.0 | | postprocessing | ^6.39.1 | | gsap | ^3.15.0 | | lenis | ^1.3.23 | | framer-motion | ^12.38.0 | | motion | ^12.38.0 | | @theatre/core | ^0.7.2 | | remotion | ^4.0.464 | | @remotion/player | ^4.0.464 | | react | ^19.2.6 | | react-dom | ^19.2.6 | | zod | ^4.1.12 | | lucide-react | ^1.16.0 |

Planned Live Surfaces

• Site: https://merser3-1.pages.dev/
• Health: https://merser3-1.pages.dev/health
• MCP endpoint: https://merser3-1.pages.dev/mcp
• 0S SkyeWay listing: https://metraiyux-0s-full-system.graylondonskyes.workers.dev/skyeway.html

Local Development

git clone <your-workspace>
cd .vscode/MCP5-Merser3.1
npm install
npm run dev
npm run start:http
npm run stress

Local stdio from this repo:

{
  "mcpServers": {
    "merser31": {
      "command": "node",
      "args": ["/workspaces/MetrAIyux-0S/.vscode/MCP5-Merser3.1/stdio-server.mjs", "--stdio"]
    }
  }
}

Stress And Proof

The new base must not ship until it has package, stdio, local HTTP, live site, live health, unauthenticated gate, and headed browser proof.

npm run stress
npm run build:worker
npm run deploy

Latest release proof at publish time:

• Stdio MCP calls passed.
• Local HTTP /health, tools/list, and tools/call stress passed.
• Live root and /health stress passed.
• Live unauthenticated /mcp correctly returned 401.
• Headed browser proof passed desktop and mobile with real interactions.

License

UNLICENSED. Public npm distribution is for controlled developer access to Merser, the source-world MCP server and release lane by Skyes Over London. Do not treat this as an open-source license grant.