{
  "$schema": "https://verifymcp.io/schemas/changelog.json",
  "server": "com-freqblog-music-metadata",
  "component": "mcp",
  "generated_at": "2026-09-21T01:30:17.420Z",
  "tracking_since": "2026-07-26",
  "counts": {
    "critical": 0,
    "security": 15,
    "functional": 0,
    "cosmetic": 0
  },
  "events": [
    {
      "id": "chg_01a0a783-baf3-7346-9d24-c42b61f8cbba",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "find_tracks_by_bpm",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
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      "detail": {
        "tool": "find_tracks_by_bpm"
      },
      "occurred_on": "2026-09-16",
      "occurred_at": "2026-09-16 00:00:22.451617+00",
      "observed_since": "2026-09-15",
      "source": "scan",
      "summary": "Tool “find_tracks_by_bpm” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/com-freqblog-music-metadata/mcp#chg-chg_01a0a783-baf3-7346-9d24-c42b61f8cbba"
    },
    {
      "id": "chg_01a0a783-bb02-7026-a031-461536b2b7eb",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "find_tracks_by_key",
      "subject_child": "",
      "from_code": null,
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      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
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      "detail": {
        "tool": "find_tracks_by_key"
      },
      "occurred_on": "2026-09-16",
      "occurred_at": "2026-09-16 00:00:22.451617+00",
      "observed_since": "2026-09-15",
      "source": "scan",
      "summary": "Tool “find_tracks_by_key” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/com-freqblog-music-metadata/mcp#chg-chg_01a0a783-bb02-7026-a031-461536b2b7eb"
    },
    {
      "id": "chg_01a0a783-bb06-7da1-9c9b-63e87191a267",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "get_audio_features_batch",
      "subject_child": "",
      "from_code": null,
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      "from_value": null,
      "to_value": null,
      "materiality": "security",
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      "detail": {
        "tool": "get_audio_features_batch"
      },
      "occurred_on": "2026-09-16",
      "occurred_at": "2026-09-16 00:00:22.451617+00",
      "observed_since": "2026-09-15",
      "source": "scan",
      "summary": "Tool “get_audio_features_batch” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/com-freqblog-music-metadata/mcp#chg-chg_01a0a783-bb06-7da1-9c9b-63e87191a267"
    },
    {
      "id": "chg_01a0a783-bb09-7991-9540-d4f8d2894d18",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "get_recommendations",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "get_recommendations"
      },
      "occurred_on": "2026-09-16",
      "occurred_at": "2026-09-16 00:00:22.451617+00",
      "observed_since": "2026-09-15",
      "source": "scan",
      "summary": "Tool “get_recommendations” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/com-freqblog-music-metadata/mcp#chg-chg_01a0a783-bb09-7991-9540-d4f8d2894d18"
    },
    {
      "id": "chg_01a0a783-bb1d-7d3a-8253-2a4063532450",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "search_catalog",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "search_catalog"
      },
      "occurred_on": "2026-09-16",
      "occurred_at": "2026-09-16 00:00:22.451617+00",
      "observed_since": "2026-09-15",
      "source": "scan",
      "summary": "Tool “search_catalog” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/com-freqblog-music-metadata/mcp#chg-chg_01a0a783-bb1d-7d3a-8253-2a4063532450"
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    {
      "id": "chg_01a0a783-bb23-7ea9-9ee0-742578ac77ce",
      "kind": "server.instructions_changed",
      "family": "",
      "subject_kind": "server",
      "subject": "instructions",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-09-16",
      "occurred_at": "2026-09-16 00:00:22.451617+00",
      "observed_since": "2026-09-15",
      "source": "scan",
      "summary": "The server rewrote its instructions, which are the text every model session reads",
      "link": "https://verifymcp.io/servers/com-freqblog-music-metadata/mcp#chg-chg_01a0a783-bb23-7ea9-9ee0-742578ac77ce"
    },
    {
      "id": "chg_01a05527-7724-796d-93fe-05f6e4f5fab5",
      "kind": "check.reverified",
      "family": "auth-oauth",
      "subject_kind": "check",
      "subject": "auth-oauth",
      "subject_child": "",
      "from_code": "auth.none_undeclared",
      "to_code": "auth.challenge_only",
      "from_value": "unverified",
      "to_value": "fail",
      "materiality": "security",
      "direction": "regression",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-08-31",
      "occurred_at": "2026-08-31 00:10:44.785462+00",
      "observed_since": "2026-08-30",
      "source": "scan",
      "summary": "Authorization (unverified → fail)",
      "link": "https://verifymcp.io/servers/com-freqblog-music-metadata/mcp#chg-chg_01a05527-7724-796d-93fe-05f6e4f5fab5"
    },
    {
      "id": "chg_01a05527-7727-76a2-a2ad-dfad7ec32d78",
      "kind": "check.unverifiable",
      "family": "transport",
      "subject_kind": "check",
      "subject": "transport",
      "subject_child": "",
      "from_code": "transport.verified",
      "to_code": "transport.auth_gated",
      "from_value": "pass",
      "to_value": "unverified",
      "materiality": "security",
      "direction": "regression",
      "score_delta": null,
      "detail": {
        "transport": "streamable-http"
      },
      "occurred_on": "2026-08-31",
      "occurred_at": "2026-08-31 00:10:44.785462+00",
      "observed_since": "2026-08-30",
      "source": "scan",
      "summary": "Transport (pass → unverified)",
      "link": "https://verifymcp.io/servers/com-freqblog-music-metadata/mcp#chg-chg_01a05527-7727-76a2-a2ad-dfad7ec32d78"
    },
    {
      "id": "chg_01a05527-7727-7c66-9546-826f36340d11",
      "kind": "check.verdict",
      "family": "stability",
      "subject_kind": "check",
      "subject": "stability",
      "subject_child": "",
      "from_code": "stability.building_history",
      "to_code": "stability.stable",
      "from_value": "0.97",
      "to_value": "pass",
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-08-31",
      "occurred_at": "2026-08-31 00:10:44.785462+00",
      "observed_since": "2026-08-30",
      "source": "scan",
      "summary": "Stability (0.97 → pass)",
      "link": "https://verifymcp.io/servers/com-freqblog-music-metadata/mcp#chg-chg_01a05527-7727-7c66-9546-826f36340d11"
    },
    {
      "id": "chg_01a04089-b83a-7bde-a8f7-a85e6370159b",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "get_audio_features",
      "subject_child": "",
      "from_code": null,
      "to_code": null,
      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "get_audio_features"
      },
      "occurred_on": "2026-08-27",
      "occurred_at": "2026-08-27 00:06:02.302895+00",
      "observed_since": "2026-08-26",
      "source": "scan",
      "summary": "Tool “get_audio_features” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/com-freqblog-music-metadata/mcp#chg-chg_01a04089-b83a-7bde-a8f7-a85e6370159b"
    },
    {
      "id": "chg_01a0363d-23e3-716e-aa3f-52dac674409c",
      "kind": "check.verdict",
      "family": "stability",
      "subject_kind": "check",
      "subject": "stability",
      "subject_child": "",
      "from_code": "stability.building_history",
      "to_code": "stability.stable",
      "from_value": "0.97",
      "to_value": "pass",
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {},
      "occurred_on": "2026-08-25",
      "occurred_at": "2026-08-25 00:06:11.586777+00",
      "observed_since": "2026-08-24",
      "source": "scan",
      "summary": "Stability (0.97 → pass)",
      "link": "https://verifymcp.io/servers/com-freqblog-music-metadata/mcp#chg-chg_01a0363d-23e3-716e-aa3f-52dac674409c"
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    {
      "id": "chg_01a0122f-e621-7d63-a52a-7275ac540938",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "get_recommendations",
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      "from_code": null,
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      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
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      "occurred_on": "2026-08-18",
      "occurred_at": "2026-08-18 00:05:24.059637+00",
      "observed_since": "2026-08-17",
      "source": "scan",
      "summary": "Tool “get_recommendations” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/com-freqblog-music-metadata/mcp#chg-chg_01a0122f-e621-7d63-a52a-7275ac540938"
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    {
      "id": "chg_019ff86f-2ca3-7454-bc60-aeae3dd93dd3",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "get_audio_features",
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      "from_code": null,
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      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "get_audio_features"
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      "occurred_on": "2026-08-13",
      "occurred_at": "2026-08-13 00:04:23.226037+00",
      "observed_since": "2026-08-12",
      "source": "scan",
      "summary": "Tool “get_audio_features” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/com-freqblog-music-metadata/mcp#chg-chg_019ff86f-2ca3-7454-bc60-aeae3dd93dd3"
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    {
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      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "tag_track",
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      "from_code": null,
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      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "tag_track"
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      "occurred_on": "2026-08-13",
      "occurred_at": "2026-08-13 00:04:23.226037+00",
      "observed_since": "2026-08-12",
      "source": "scan",
      "summary": "Tool “tag_track” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/com-freqblog-music-metadata/mcp#chg-chg_019ff86f-2ca4-7652-81ac-1d35934750d6"
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    {
      "id": "chg_019fafdb-611d-73cc-be98-73cc8f585ee0",
      "kind": "tool.description_changed",
      "family": "",
      "subject_kind": "tool",
      "subject": "search_catalog",
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      "from_code": null,
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      "from_value": null,
      "to_value": null,
      "materiality": "security",
      "direction": "neutral",
      "score_delta": null,
      "detail": {
        "tool": "search_catalog"
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      "occurred_on": "2026-07-29",
      "occurred_at": "2026-07-29 21:50:17.869651+00",
      "observed_since": "2026-07-28",
      "source": "scan",
      "summary": "Tool “search_catalog” rewrote its description, which is the text the model reads",
      "link": "https://verifymcp.io/servers/com-freqblog-music-metadata/mcp#chg-chg_019fafdb-611d-73cc-be98-73cc8f585ee0"
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  ],
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      "date": "2026-09-16",
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      "event_count": 7
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    {
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    {
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    {
      "date": "2026-08-25",
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      "tracked": true,
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      "delta": null,
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}