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Ephemora Cell MCP — WASM Sandbox for Grok

io.github.michaels1011/ephemora-cell-mcp

WASM sandbox for MCP tools. WASI-isolated, fuel/memory/I/O capped, attested.

client:Grok transport:stdio runtime:pypi

Install Ephemora Cell MCP — WASM Sandbox in Grok

.mcp.json (in your project root)

{
  "mcpServers": {
    "ephemora-cell-mcp": {
      "type": "stdio",
      "command": "uvx",
      "args": [
        "ephemora-cell"
      ]
    }
  }
}

Grok Build reads Claude Code's .mcp.json and Claude Desktop's config unchanged, so a server you have already set up there needs nothing new. The Grok web app and X integration do not take custom servers. Grok docs

Ephemora Cell MCP — WASM Sandbox in other clients