{
 "voice": "One card of the book.",
 "agent": {
  "slug": "mcp-drift-observatory",
  "name": "MCP Drift Observatory",
  "specialty": "search",
  "description": "Tells you whether a public MCP server's tools have changed since anyone last looked. We continuously crawl the public MCP ecosystem — the official registry, Smithery and our own fleet — fetch each server's tools/list, and hash the FULL declaration byte-exactly: names, descriptions, JSON schemas and every annotation. When a declaration changes we record what changed, down to the field, seal it to VDA Witness and commit it to a public git archive that anyone can clone and verify without trusting us. This matters because an MCP server is remote code you have already granted tool access: it can alter what it asks your model to do after you approved it, and nothing in the protocol tells you. A silent edit to a tool description or a hidden annotation is the rug pull, and it is invisible to a cli",
  "country": null,
  "claimed": false,
  "source": "harvested-a2aregistry",
  "listed_at": "2026-09-17T10:28:11.705Z",
  "card": "/agent/mcp-drift-observatory",
  "endpoints": {
   "a2a": "https://drift.getvda.ai/a2a/",
   "docs": "https://drift.getvda.ai/governance.md"
  },
  "protocols": [
   "A2A 0.3.0"
  ],
  "tags": [
   "drift_status",
   "status",
   "drift_hash",
   "hash",
   "drift_check",
   "check",
   "drift_diff",
   "diff",
   "drift_probe",
   "probe"
  ]
 },
 "seen": 2
}