Yakumo Verification Gate

{
  "name": "Yakumo Verification Gate",
  "description": "Checks whether an MCP server exists, publishes an agent card, discloses who pays it, and returns identical output for identical input. Free. Conformance and disclosure only; this gate does not verify that any price returned by a checked server is correct.",
  "url": "https://gate.horizonshield.dev",
  "provider": {
    "organization": "The HORIZ\u97f3s Co., Ltd."
  },
  "version": "0.2.1",
  "protocolVersion": "0.2.0",
  "capabilities": {
    "streaming": false,
    "pushNotifications": false
  },
  "defaultInputModes": [
    "text"
  ],
  "defaultOutputModes": [
    "text"
  ],
  "compensation": {
    "paid_by": "buyer",
    "referral_fee": false,
    "listing_fee": false,
    "success_fee_pct": 0,
    "disclosure_url": "https://shield.the-horizons-innovation.com/yakumo/plans/"
  },
  "preferredTransport": "JSONRPC",
  "skills": [
    {
      "id": "check",
      "name": "Conformance check",
      "description": "POST /check with an MCP endpoint URL, or call the check_conformance tool over MCP at /mcp. Returns a verdict with a recomputable SHA-256.",
      "tags": [
        "mcp",
        "verification",
        "conformance",
        "disclosure"
      ]
    },
    {
      "id": "verify",
      "name": "Verdict verification",
      "description": "Recompute the SHA-256 of a verdict this gate issued, so you do not have to trust the issuer. Available as the verify_verdict tool over MCP.",
      "tags": [
        "verification",
        "tamper-evident",
        "recomputable"
      ]
    }
  ]
}