Postcard

Connect Remote server

claude mcp add --transport http postcard https://postcard.clawhard.com/mcp

{
  "mcpServers": {
    "postcard": {
      "url": "https://postcard.clawhard.com/mcp"
    }
  }
}

{
  "servers": {
    "postcard": {
      "type": "http",
      "url": "https://postcard.clawhard.com/mcp"
    }
  }
}

Settings > Connectors > Add custom connector
URL: https://postcard.clawhard.com/mcp

Tools 2 found in our last check

• postcard_check_link_preview

  Use when the user asks how a link will look when shared, why a shared link shows no image or the wrong title, or wants a page checked before a launch post (signals: "link preview", "og:image not showing", "Twitter card", "X card", "social card", "share image", "unfurl", "Open Gr…

• postcard_check_preview_tags

  Use when the share-card tags need checking in HTML that is not public yet: a page being built, a localhost or staging page, a template, or a <head> block the user pasted (signals: "check my meta tags", "are these og tags right", "before I deploy", "Next.js metadata", "index.html…

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