{
  "tool_id": "02-castled-io",
  "name": "Castled.io",
  "research_date": "2026-09-12",
  "catalog_date": "2026-10-17",
  "documentation_url": "https://castled.io/docs",
  "sources": [
    "https://castled.io/docs",
    "https://castled.io/",
    "https://castled.io/developers",
    "https://yc-oss.github.io/api/industries/marketing.json"
  ],
  "pages": [
    {
      "source_url": "https://castled.io/docs",
      "status": "unavailable",
      "reason": "Insufficient readable content"
    }
  ],
  "coverage": "not-retrieved",
  "limitation": "Reference index, not a mirror of complete vendor documentation. Retrieved pages do not prove the MCP works."
}