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        "single_criterion": true,
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        "last_observed": "2026-07-01T06:50:04.179Z"
      },
      {
        "server_url": "https://server.smithery.ai/@kkjdaniel/bgg-mcp/mcp",
        "trend": "degrading",
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        "newly_passing": [],
        "measurement_limited": false,
        "single_criterion": true,
        "observation_count": 2,
        "last_observed": "2026-07-01T06:50:02.323Z"
      },
      {
        "server_url": "https://server.smithery.ai/@kirbah/mcp-youtube/mcp",
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        "current_grade": "D",
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        "newly_passing": [],
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        "last_observed": "2026-07-01T06:50:00.612Z"
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      }
    ],
    "improvers": [
      {
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        "current_grade": "C",
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          "C2",
          "C3",
          "C4",
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        ],
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        "last_observed": "2026-07-01T06:40:07.865Z"
      },
      {
        "server_url": "https://pocketdrives.ai/mcp",
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      },
      {
        "server_url": "https://tandem.ac/mcp",
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        "current_grade": "B",
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        "passes_to": 9,
        "passes_delta": 1,
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        "measurement_limited": false,
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        "last_observed": "2026-07-01T06:35:27.363Z"
      },
      {
        "server_url": "https://mcp.polybridge.ai/mcp",
        "trend": "improving",
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        "passes_to": 10,
        "passes_delta": 1,
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          "C6"
        ],
        "measurement_limited": false,
        "single_criterion": true,
        "observation_count": 2,
        "last_observed": "2026-06-22T00:32:12.846Z"
      },
      {
        "server_url": "https://mcpregistrysearchwilfredleejr.vercel.app/api/mcp",
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        "current_grade": "B",
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        "passes_to": 9,
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        "last_observed": "2026-06-21T00:38:11.153Z"
      }
    ],
    "issuer": "SaSame SRL",
    "issuer_pubkey_spki_hex": "302a300506032b6570032100439ce47d384c8ceb07c9040aef780cc3a2ba5a63c14027ad77ab458111f20fb6",
    "note": "Offline-verify: ed25519.verify(base64 signature, utf8(canonical_json), issuer_pubkey). Same key as the MCP-Ready Certificate (verify_mcp_cert)."
  }
}