{
  "tier": "free",
  "tool": "mention_pulse",
  "preview": {
    "term": "Nvidia",
    "totalMentions": 26,
    "trend": "falling",
    "sentimentLabel": "positive",
    "asOf": "2026-06-21T21:17:36.078Z"
  },
  "upgrade": "Pass ?key= (see /pricing) or pay per-call via x402 over MCP for the full result.",
  "x402": "/.well-known/x402"
}