EPUBCheck by pagespool for Gemini CLI

com.pagespool/epubcheck

Hosted EPUBCheck: check an EPUB file against the EPUB specification and list every error.

client:Gemini CLI transport:streamable-http tools:1

Install EPUBCheck by pagespool in Gemini CLI

~/.gemini/settings.json · windows: %USERPROFILE%\.gemini\settings.json

{
  "mcpServers": {
    "epubcheck": {
      "httpUrl": "https://api.pagespool.com/mcp/epubcheck/"
    }
  }
}

Gemini expands $VAR and ${VAR} inside env values, so a secret can live in your shell rather than this file. Gemini CLI docs