Previous value: -"Highest total field magnitude Bt in nT across the whole window, computed before any reduction. Null when the window is empty or every bt in it is null."New value: +"Peak Bt in nT across the whole window; null when it has no Bt."

Previous value: -"Lowest (most southward) Bz reading in nT across the whole window, computed before any reduction — the number storm work reads next to the latest value. Null when the window is empty or every bzGsm in it is null."New value: +"Most southward Bz in nT across the whole window; null when it has no Bz."

Previous value: -"ISO 8601 time tag of the record that carried bzMinInWindow. Null whenever bzMinInWindow is null."New value: +"ISO 8601 time of bzMinInWindow; null when it is null."

Previous value: -"Minutes of southward Bz in the window: the count of 1-minute mag records with bzGsm below 0, across the whole window before any reduction. Gaps in the feed are not counted, so it can fall short of the wall-clock time Bz spent southward. 0 on an empty window, an all-null window, or one with no southward Bz."New value: +"Minutes of Bz < 0: 1-minute mag records across the whole window. Feed gaps are not counted. 0 when none."

Previous value: -"Plain-language Bz status, e.g. \"Southward Bz −14 nT — storm-driving conditions\" or \"Northward Bz +5 nT — quiescent\"."New value: +"Bz status from latestMag, e.g. \"Southward Bz -14 nT — storm-driving conditions.\"; \"Bz data unavailable.\" without a reading."

Previous value: -"Highest proton density in particles/cm³ across the whole window, computed before any reduction. Null when the window is empty or every densityPerCm3 in it is null."New value: +"Peak proton density in particles/cm³ across the whole window; null when none."

Previous value: -"Hours between now and the newest record across both feeds — how far behind real time the upstream data is. Null when both feeds returned no active-spacecraft records."New value: +"Hours from the newest record in either feed to now; null when both are empty."

Previous value: -"ISO 8601 time of the newest magnetic field record the feed carries, ignoring the window. Null when the feed returned no active-spacecraft mag records."New value: +"ISO 8601 time of the newest mag record in the feed, window aside; null when none."

Previous value: -"ISO 8601 time of the newest plasma record the feed carries, ignoring the window. Null when the feed returned no active-spacecraft plasma records. Compare against the window to tell a quiet feed from a stale one."New value: +"ISO 8601 time of the newest plasma record in the feed, window aside; null when none."

Previous value: -[
-  {
-    "additionalProperties": false,
-    "description": "One magnetic field measurement from the active L1 spacecraft.",
-    "properties": {
-      "bt": {
-        "description": "Total field magnitude Bt (nT). Null when the feed omits the value.",
-        "type": [
-          "number",
-          "null"
-        ]
-      },
-      "bxGsm": {
-        "description": "Bx component in GSM coordinates (nT). Null when the feed omits the value.",
-        "type": [
-          "number",
-          "null"
-        ]
-      },
-      "byGsm": {
-        "description": "By component in GSM coordinates (nT). Null when the feed omits the value.",
-        "type": [
-          "number",
-          "null"
-        ]
-      },
-      "bzGsm": {
-        "description": "Bz component in GSM coordinates (nT). Southward (negative) drives geomagnetic storms. Null when the feed omits the value.",
-        "type": [
-          "number",
-          "null"
-        ]
-      },
-      "source": {
-        "description": "Spacecraft that reported this measurement, as named by the feed, e.g. \"SOLAR1\".",
-        "type": "string"
-      },
-      "timeTag": {
-        "description": "ISO 8601 measurement time tag.",
-        "type": "string"
-      }
-    },
-    "required": [
-      "timeTag",
-      "source",
-      "bxGsm",
-      "byGsm",
-      "bzGsm",
-      "bt"
-    ],
-    "type": "object"
-  },
-  {
-    "type": "null"
-  }
-]New value: +[
+  {
+    "additionalProperties": false,
+    "description": "One L1 magnetic field record.",
+    "properties": {
+      "bt": {
+        "description": "Total field Bt in nT; null when missing.",
+        "type": [
+          "number",
+          "null"
+        ]
+      },
+      "bxGsm": {
+        "description": "Bx, GSM, in nT; null when missing.",
+        "type": [
+          "number",
+          "null"
+        ]
+      },
+      "byGsm": {
+        "description": "By, GSM, in nT; null when missing.",
+        "type": [
+          "number",
+          "null"
+        ]
+      },
+      "bzGsm": {
+        "description": "Bz, GSM, in nT; negative (southward) drives storms; null when missing.",
+        "type": [
+          "number",
+          "null"
+        ]
+      },
+      "source": {
+        "description": "Reporting spacecraft, e.g. \"SOLAR1\".",
+        "type": "string"
+      },
+      "timeTag": {
+        "description": "ISO 8601 measurement time.",
+        "type": "string"
+      }
+    },
+    "required": [
+      "timeTag",
+      "source",
+      "bxGsm",
+      "byGsm",
+      "bzGsm",
+      "bt"
+    ],
+    "type": "object"
+  },
+  {
+    "type": "null"
+  }
+]

Previous value: -"Most recent magnetic field reading, null if no data in window."New value: +"Newest mag record in the window; null when the window has none."

Previous value: -[
-  {
-    "additionalProperties": false,
-    "description": "One plasma measurement from the active L1 spacecraft.",
-    "properties": {
-      "densityPerCm3": {
-        "description": "Proton density in particles/cm³. Null when the feed omits the value.",
-        "type": [
-          "number",
-          "null"
-        ]
-      },
-      "source": {
-        "description": "Spacecraft that reported this measurement, as named by the feed, e.g. \"SOLAR1\".",
-        "type": "string"
-      },
-      "speedKmS": {
-        "description": "Solar wind speed in km/s. Null when the feed omits the value.",
-        "type": [
-          "number",
-          "null"
-        ]
-      },
-      "temperatureK": {
-        "description": "Proton temperature in Kelvin. Null when the feed omits the value.",
-        "type": [
-          "number",
-          "null"
-        ]
-      },
-      "timeTag": {
-        "description": "ISO 8601 measurement time tag.",
-        "type": "string"
-      }
-    },
-    "required": [
-      "timeTag",
-      "source",
-      "densityPerCm3",
-      "speedKmS",
-      "temperatureK"
-    ],
-    "type": "object"
-  },
-  {
-    "type": "null"
-  }
-]New value: +[
+  {
+    "additionalProperties": false,
+    "description": "One L1 plasma record.",
+    "properties": {
+      "densityPerCm3": {
+        "description": "Proton density in particles/cm³; null when missing.",
+        "type": [
+          "number",
+          "null"
+        ]
+      },
+      "source": {
+        "description": "Reporting spacecraft, e.g. \"SOLAR1\".",
+        "type": "string"
+      },
+      "speedKmS": {
+        "description": "Solar wind speed in km/s; null when missing.",
+        "type": [
+          "number",
+          "null"
+        ]
+      },
+      "temperatureK": {
+        "description": "Proton temperature in K; null when missing.",
+        "type": [
+          "number",
+          "null"
+        ]
+      },
+      "timeTag": {
+        "description": "ISO 8601 measurement time.",
+        "type": "string"
+      }
+    },
+    "required": [
+      "timeTag",
+      "source",
+      "densityPerCm3",
+      "speedKmS",
+      "temperatureK"
+    ],
+    "type": "object"
+  },
+  {
+    "type": "null"
+  }
+]

Previous value: -"Most recent plasma reading, null if no data in window."New value: +"Newest plasma record in the window; null when the window has none."

Previous value: -"Magnetic field measurements (Bx, By, Bz, Bt) within the window, oldest first. Under resolution=\"reduced\" this is at most 200 real records — one per equal-size bucket of the window, each the bucket's most southward Bz — with the newest windowed record last, so the final element always equals latestMag. Empty under resolution=\"summary\"."New value: +"Mag records in the window, oldest first. \"reduced\": at most 200, each its bucket's most southward Bz; the last equals latestMag. Empty under \"summary\"."

Previous value: -"One magnetic field measurement from the active L1 spacecraft."New value: +"One L1 magnetic field record."

Previous value: -"Total field magnitude Bt (nT). Null when the feed omits the value."New value: +"Total field Bt in nT; null when missing."

Previous value: -"Bx component in GSM coordinates (nT). Null when the feed omits the value."New value: +"Bx, GSM, in nT; null when missing."

Previous value: -"By component in GSM coordinates (nT). Null when the feed omits the value."New value: +"By, GSM, in nT; null when missing."

Previous value: -"Bz component in GSM coordinates (nT). Southward (negative) drives geomagnetic storms. Null when the feed omits the value."New value: +"Bz, GSM, in nT; negative (southward) drives storms; null when missing."

Previous value: -"Spacecraft that reported this measurement, as named by the feed, e.g. \"SOLAR1\"."New value: +"Reporting spacecraft, e.g. \"SOLAR1\"."

Previous value: -"ISO 8601 measurement time tag."New value: +"ISO 8601 measurement time."

Previous value: -"Magnetic field records per emitted record — the bucket size the window was reduced by, or 1 when this series was returned untouched. The two series differ in length, so each carries its own factor. Present only when a reduction was applied to either series."New value: +"Mag records per emitted record, 1 if untouched. Present only after a reduction."

Previous value: -"Number of magnetic field records in the mag array. Equal to the records in the window at full resolution; under a reduction it is the emitted count, and magWindowRecords carries the pre-reduction total. Under resolution=\"summary\" the array is empty and this is the records the window held."New value: +"Records in mag (magWindowRecords has the pre-reduction total); under \"summary\", the records the window held."

Previous value: -"Magnetic field records the window held before reduction. Present only when a reduction was applied to either series, or under resolution=\"summary\"."New value: +"Mag records in the window before reduction. Present after a reduction or under \"summary\"."

Previous value: -"Guidance on what shaped this response: that the requested window returned no plasma or magnetic field records — naming the newest record the feed carries, or reporting that the feed itself returned nothing from an active spacecraft — that a series was bounded to 200 records, with the per-series factors, or that resolution=\"summary\" omitted both series."New value: +"What shaped the response: an empty window (with the newest feed record), series bounded to 200 records, or series omitted under \"summary\"."

Previous value: -"Plasma measurements (speed, density, temperature) within the window, oldest first. Under resolution=\"reduced\" this is at most 200 real records — one per equal-size bucket of the window, each the bucket's fastest speed — with the newest windowed record last. Empty under resolution=\"summary\"."New value: +"Plasma records in the window, oldest first. \"reduced\": at most 200, each its bucket's fastest speed, newest last. Empty under \"summary\"."

Previous value: -"One plasma measurement from the active L1 spacecraft."New value: +"One L1 plasma record."

Previous value: -"Proton density in particles/cm³. Null when the feed omits the value."New value: +"Proton density in particles/cm³; null when missing."

Previous value: -"Spacecraft that reported this measurement, as named by the feed, e.g. \"SOLAR1\"."New value: +"Reporting spacecraft, e.g. \"SOLAR1\"."

Previous value: -"Solar wind speed in km/s. Null when the feed omits the value."New value: +"Solar wind speed in km/s; null when missing."

Previous value: -"Proton temperature in Kelvin. Null when the feed omits the value."New value: +"Proton temperature in K; null when missing."

Previous value: -"ISO 8601 measurement time tag."New value: +"ISO 8601 measurement time."

Previous value: -"Plasma records per emitted record — the bucket size the window was reduced by, or 1 when this series was returned untouched. Records rather than a minute cadence: the feed skips minutes, so a bucket spans a variable stretch of wall-clock time. Present only when a reduction was applied to either series."New value: +"Plasma records per emitted record, 1 if untouched. Present only after a reduction."

Previous value: -"Number of plasma records in the plasma array. Equal to the records in the window at full resolution; under a reduction it is the emitted count, and plasmaWindowRecords carries the pre-reduction total. Under resolution=\"summary\" the array is empty and this is the records the window held."New value: +"Records in plasma (plasmaWindowRecords has the pre-reduction total); under \"summary\", the records the window held."

Previous value: -"Plasma records the window held before reduction. Present only when a reduction was applied to either series, or under resolution=\"summary\"."New value: +"Plasma records in the window before reduction. Present after a reduction or under \"summary\"."

Previous value: -"Highest solar wind speed in km/s across the whole window, computed before any reduction. Null when the window is empty or every speedKmS in it is null."New value: +"Peak speed in km/s across the whole window; null when it has no speed."

Previous value: -"ISO 8601 time tag of the record that carried speedMaxInWindow. Null whenever speedMaxInWindow is null."New value: +"ISO 8601 time of speedMaxInWindow; null when it is null."

Previous value: -"Detail level of the returned plasma and mag series. \"reduced\" (default) bounds each series to at most 200 records: the window is bucketed by record count and one real measurement is emitted per bucket — the bucket's fastest speed for plasma, its most southward Bz for mag — with the newest record in the window always last. A series already inside the bound is returned untouched, so a default 3-hour call is unaffected. \"full\" returns every record in the window (~1,400 per series over 24 hours, a ~540 KB response). bzStatus, bzMinInWindow, latestPlasma, and latestMag are computed from the full window either way."New value: +"Detail level of the returned plasma and mag series. \"summary\" returns both series empty and keeps every headline field — about 2 KB whatever the window. \"reduced\" (default) bounds each series to at most 200 records: the window is bucketed by record count and one real measurement is emitted per bucket — the bucket's fastest speed for plasma, its most southward Bz for mag — with the newest record in the window always last. A series already inside the bound is returned untouched, so a default 3-hour call is unaffected. \"full\" returns every record in the window (~1,400 per series over 24 hours, a ~540 KB response). The headline fields — latestPlasma, latestMag, bzStatus, bzMinInWindow, and the window maxima and southward-Bz minutes — are computed from the full window at every resolution."

Previous value: -[
-  "reduced",
-  "full"
-]New value: +[
+  "summary",
+  "reduced",
+  "full"
+]

Previous value: -[
-  {
-    "not": {
-      "required": [
-        "error"
-      ]
-    },
-    "required": [
-      "plasma",
-      "mag",
-      "latestPlasma",
-      "latestMag",
-      "bzStatus",
-      "plasmaCount",
-      "magCount",
-      "bzMinInWindow",
-      "bzMinTimeTag",
-      "latestFeedPlasmaTime",
-      "latestFeedMagTime",
-      "feedStalenessHours"
-    ]
-  },
-  {
-    "required": [
-      "error"
-    ]
-  }
-]New value: +[
+  {
+    "not": {
+      "required": [
+        "error"
+      ]
+    },
+    "required": [
+      "plasma",
+      "mag",
+      "latestPlasma",
+      "latestMag",
+      "bzStatus",
+      "plasmaCount",
+      "magCount",
+      "bzMinInWindow",
+      "bzMinTimeTag",
+      "bzSouthMinutesInWindow",
+      "speedMaxInWindow",
+      "speedMaxTimeTag",
+      "densityMaxInWindow",
+      "btMaxInWindow",
+      "latestFeedPlasmaTime",
+      "latestFeedMagTime",
+      "feedStalenessHours"
+    ]
+  },
+  {
+    "required": [
+      "error"
+    ]
+  }
+]

Added value: +{
+  "description": "Highest total field magnitude Bt in nT across the whole window, computed before any reduction. Null when the window is empty or every bt in it is null.",
+  "type": [
+    "number",
+    "null"
+  ]
+}

Added value: +{
+  "description": "Minutes of southward Bz in the window: the count of 1-minute mag records with bzGsm below 0, across the whole window before any reduction. Gaps in the feed are not counted, so it can fall short of the wall-clock time Bz spent southward. 0 on an empty window, an all-null window, or one with no southward Bz.",
+  "type": "number"
+}

Added value: +{
+  "description": "Highest proton density in particles/cm³ across the whole window, computed before any reduction. Null when the window is empty or every densityPerCm3 in it is null.",
+  "type": [
+    "number",
+    "null"
+  ]
+}

Previous value: -"Machine-readable failure mode. Declared by this tool: `feed_unavailable`: SWPC feed returns 5xx or 429, times out, or answers with a body that is not parseable JSON. Retried before failing. `feed_moved`: SWPC feed path returns a permanent 4xx (404, 410, 401, 403). Fails in one attempt. Other values are possible when a failure originates below the handler."New value: +"Machine-readable failure mode. Declared by this tool: `feed_unavailable`: SWPC feed returns 5xx or 429, times out, or answers with a body that is not parseable JSON. Retried for up to 45 seconds in total before failing. `feed_moved`: SWPC feed path returns a permanent 4xx (404, 410, 401, 403). Fails in one attempt. Other values are possible when a failure originates below the handler."

Previous value: -"Magnetic field measurements (Bx, By, Bz, Bt) within the window, oldest first. Under resolution=\"reduced\" this is at most 200 real records — one per equal-size bucket of the window, each the bucket's most southward Bz — with the newest windowed record last, so the final element always equals latestMag."New value: +"Magnetic field measurements (Bx, By, Bz, Bt) within the window, oldest first. Under resolution=\"reduced\" this is at most 200 real records — one per equal-size bucket of the window, each the bucket's most southward Bz — with the newest windowed record last, so the final element always equals latestMag. Empty under resolution=\"summary\"."

Previous value: -"Number of magnetic field records in the mag array. Equal to the records in the window at full resolution; under a reduction it is the emitted count, and magWindowRecords carries the pre-reduction total."New value: +"Number of magnetic field records in the mag array. Equal to the records in the window at full resolution; under a reduction it is the emitted count, and magWindowRecords carries the pre-reduction total. Under resolution=\"summary\" the array is empty and this is the records the window held."

Previous value: -"Magnetic field records the window held before reduction. Present only when a reduction was applied to either series."New value: +"Magnetic field records the window held before reduction. Present only when a reduction was applied to either series, or under resolution=\"summary\"."

Previous value: -"Guidance on what shaped this response: that the requested window returned no plasma or magnetic field records — naming the newest record the feed carries, or reporting that the feed itself returned nothing from an active spacecraft — and that a series was bounded to 200 records, with the per-series factors."New value: +"Guidance on what shaped this response: that the requested window returned no plasma or magnetic field records — naming the newest record the feed carries, or reporting that the feed itself returned nothing from an active spacecraft — that a series was bounded to 200 records, with the per-series factors, or that resolution=\"summary\" omitted both series."

Previous value: -"Plasma measurements (speed, density, temperature) within the window, oldest first. Under resolution=\"reduced\" this is at most 200 real records — one per equal-size bucket of the window, each the bucket's fastest speed — with the newest windowed record last."New value: +"Plasma measurements (speed, density, temperature) within the window, oldest first. Under resolution=\"reduced\" this is at most 200 real records — one per equal-size bucket of the window, each the bucket's fastest speed — with the newest windowed record last. Empty under resolution=\"summary\"."

Previous value: -"Number of plasma records in the plasma array. Equal to the records in the window at full resolution; under a reduction it is the emitted count, and plasmaWindowRecords carries the pre-reduction total."New value: +"Number of plasma records in the plasma array. Equal to the records in the window at full resolution; under a reduction it is the emitted count, and plasmaWindowRecords carries the pre-reduction total. Under resolution=\"summary\" the array is empty and this is the records the window held."

Previous value: -"Plasma records the window held before reduction. Present only when a reduction was applied to either series."New value: +"Plasma records the window held before reduction. Present only when a reduction was applied to either series, or under resolution=\"summary\"."

Added value: +{
+  "description": "Highest solar wind speed in km/s across the whole window, computed before any reduction. Null when the window is empty or every speedKmS in it is null.",
+  "type": [
+    "number",
+    "null"
+  ]
+}

Added value: +{
+  "description": "ISO 8601 time tag of the record that carried speedMaxInWindow. Null whenever speedMaxInWindow is null.",
+  "type": [
+    "string",
+    "null"
+  ]
+}

Added value: +{
+  "default": "reduced",
+  "description": "Detail level of the returned plasma and mag series. \"reduced\" (default) bounds each series to at most 200 records: the window is bucketed by record count and one real measurement is emitted per bucket — the bucket's fastest speed for plasma, its most southward Bz for mag — with the newest record in the window always last. A series already inside the bound is returned untouched, so a default 3-hour call is unaffected. \"full\" returns every record in the window (~1,400 per series over 24 hours, a ~540 KB response). bzStatus, bzMinInWindow, latestPlasma, and latestMag are computed from the full window either way.",
+  "enum": [
+    "reduced",
+    "full"
+  ],
+  "type": "string"
+}

Previous value: -"Hours of recent solar wind history to return (1–168, default 3). Records update ~every 1 min, but the feed only carries roughly the last 24 hours — a larger window returns the whole feed, not more history. When a window comes back empty, feedStalenessHours and latestFeedPlasmaTime/latestFeedMagTime report how current the feed actually is."New value: +"Hours of recent solar wind history to return (1–168, default 3). Records update ~every 1 min, but the feed only carries roughly the last 24 hours — a larger window returns the whole feed, not more history, and at the default resolution the returned series stay bounded to 200 records each rather than growing with the window. When a window comes back empty, feedStalenessHours and latestFeedPlasmaTime/latestFeedMagTime report how current the feed actually is."

Previous value: -[
-  {
-    "not": {
-      "required": [
-        "error"
-      ]
-    },
-    "required": [
-      "plasma",
-      "mag",
-      "latestPlasma",
-      "latestMag",
-      "bzStatus",
-      "plasmaCount",
-      "magCount",
-      "latestFeedPlasmaTime",
-      "latestFeedMagTime",
-      "feedStalenessHours"
-    ]
-  },
-  {
-    "required": [
-      "error"
-    ]
-  }
-]New value: +[
+  {
+    "not": {
+      "required": [
+        "error"
+      ]
+    },
+    "required": [
+      "plasma",
+      "mag",
+      "latestPlasma",
+      "latestMag",
+      "bzStatus",
+      "plasmaCount",
+      "magCount",
+      "bzMinInWindow",
+      "bzMinTimeTag",
+      "latestFeedPlasmaTime",
+      "latestFeedMagTime",
+      "feedStalenessHours"
+    ]
+  },
+  {
+    "required": [
+      "error"
+    ]
+  }
+]

Added value: +{
+  "description": "Lowest (most southward) Bz reading in nT across the whole window, computed before any reduction — the number storm work reads next to the latest value. Null when the window is empty or every bzGsm in it is null.",
+  "type": [
+    "number",
+    "null"
+  ]
+}

Added value: +{
+  "description": "ISO 8601 time tag of the record that carried bzMinInWindow. Null whenever bzMinInWindow is null.",
+  "type": [
+    "string",
+    "null"
+  ]
+}

Previous value: -"Magnetic field measurements (Bx, By, Bz, Bt) within the window, oldest first."New value: +"Magnetic field measurements (Bx, By, Bz, Bt) within the window, oldest first. Under resolution=\"reduced\" this is at most 200 real records — one per equal-size bucket of the window, each the bucket's most southward Bz — with the newest windowed record last, so the final element always equals latestMag."

Added value: +{
+  "description": "Magnetic field records per emitted record — the bucket size the window was reduced by, or 1 when this series was returned untouched. The two series differ in length, so each carries its own factor. Present only when a reduction was applied to either series.",
+  "type": "number"
+}

Previous value: -"Number of magnetic field records in the mag array, spanning the requested window."New value: +"Number of magnetic field records in the mag array. Equal to the records in the window at full resolution; under a reduction it is the emitted count, and magWindowRecords carries the pre-reduction total."

Added value: +{
+  "description": "Magnetic field records the window held before reduction. Present only when a reduction was applied to either series.",
+  "type": "number"
+}

Previous value: -"Guidance when the requested window returned no plasma or magnetic field records — names the newest record the feed carries, or reports that the feed itself returned nothing from an active spacecraft."New value: +"Guidance on what shaped this response: that the requested window returned no plasma or magnetic field records — naming the newest record the feed carries, or reporting that the feed itself returned nothing from an active spacecraft — and that a series was bounded to 200 records, with the per-series factors."

Previous value: -"Plasma measurements (speed, density, temperature) within the window, oldest first."New value: +"Plasma measurements (speed, density, temperature) within the window, oldest first. Under resolution=\"reduced\" this is at most 200 real records — one per equal-size bucket of the window, each the bucket's fastest speed — with the newest windowed record last."

Added value: +{
+  "description": "Plasma records per emitted record — the bucket size the window was reduced by, or 1 when this series was returned untouched. Records rather than a minute cadence: the feed skips minutes, so a bucket spans a variable stretch of wall-clock time. Present only when a reduction was applied to either series.",
+  "type": "number"
+}

Previous value: -"Number of plasma records in the plasma array, spanning the requested window."New value: +"Number of plasma records in the plasma array. Equal to the records in the window at full resolution; under a reduction it is the emitted count, and plasmaWindowRecords carries the pre-reduction total."

Added value: +{
+  "description": "Plasma records the window held before reduction. Present only when a reduction was applied to either series.",
+  "type": "number"
+}

Previous value: -"Machine-readable failure mode. Declared by this tool: `feed_unavailable`: SWPC endpoint returns non-OK status or times out after retries. Other values are possible when a failure originates below the handler."New value: +"Machine-readable failure mode. Declared by this tool: `feed_unavailable`: SWPC feed returns 5xx or 429, times out, or answers with a body that is not parseable JSON. Retried before failing. `feed_moved`: SWPC feed path returns a permanent 4xx (404, 410, 401, 403). Fails in one attempt. Other values are possible when a failure originates below the handler."

Previous value: -[
-  "feed_unavailable"
-]New value: +[
+  "feed_unavailable",
+  "feed_moved"
+]

Removed value: -[
-  {
-    "type": "number"
-  },
-  {
-    "type": "null"
-  }
-]

Added value: +[
+  "number",
+  "null"
+]

Removed value: -[
-  {
-    "type": "string"
-  },
-  {
-    "type": "null"
-  }
-]

Added value: +[
+  "string",
+  "null"
+]

Removed value: -[
-  {
-    "type": "string"
-  },
-  {
-    "type": "null"
-  }
-]

Added value: +[
+  "string",
+  "null"
+]

Previous value: -[
-  {
-    "additionalProperties": false,
-    "description": "One magnetic field measurement from the active L1 spacecraft.",
-    "properties": {
-      "bt": {
-        "anyOf": [
-          {
-            "type": "number"
-          },
-          {
-            "type": "null"
-          }
-        ],
-        "description": "Total field magnitude Bt (nT). Null when the feed omits the value."
-      },
-      "bxGsm": {
-        "anyOf": [
-          {
-            "type": "number"
-          },
-          {
-            "type": "null"
-          }
-        ],
-        "description": "Bx component in GSM coordinates (nT). Null when the feed omits the value."
-      },
-      "byGsm": {
-        "anyOf": [
-          {
-            "type": "number"
-          },
-          {
-            "type": "null"
-          }
-        ],
-        "description": "By component in GSM coordinates (nT). Null when the feed omits the value."
-      },
-      "bzGsm": {
-        "anyOf": [
-          {
-            "type": "number"
-          },
-          {
-            "type": "null"
-          }
-        ],
-        "description": "Bz component in GSM coordinates (nT). Southward (negative) drives geomagnetic storms. Null when the feed omits the value."
-      },
-      "source": {
-        "description": "Spacecraft that reported this measurement, as named by the feed, e.g. \"SOLAR1\".",
-        "type": "string"
-      },
-      "timeTag": {
-        "description": "ISO 8601 measurement time tag.",
-        "type": "string"
-      }
-    },
-    "required": [
-      "timeTag",
-      "source",
-      "bxGsm",
-      "byGsm",
-      "bzGsm",
-      "bt"
-    ],
-    "type": "object"
-  },
-  {
-    "type": "null"
-  }
-]New value: +[
+  {
+    "additionalProperties": false,
+    "description": "One magnetic field measurement from the active L1 spacecraft.",
+    "properties": {
+      "bt": {
+        "description": "Total field magnitude Bt (nT). Null when the feed omits the value.",
+        "type": [
+          "number",
+          "null"
+        ]
+      },
+      "bxGsm": {
+        "description": "Bx component in GSM coordinates (nT). Null when the feed omits the value.",
+        "type": [
+          "number",
+          "null"
+        ]
+      },
+      "byGsm": {
+        "description": "By component in GSM coordinates (nT). Null when the feed omits the value.",
+        "type": [
+          "number",
+          "null"
+        ]
+      },
+      "bzGsm": {
+        "description": "Bz component in GSM coordinates (nT). Southward (negative) drives geomagnetic storms. Null when the feed omits the value.",
+        "type": [
+          "number",
+          "null"
+        ]
+      },
+      "source": {
+        "description": "Spacecraft that reported this measurement, as named by the feed, e.g. \"SOLAR1\".",
+        "type": "string"
+      },
+      "timeTag": {
+        "description": "ISO 8601 measurement time tag.",
+        "type": "string"
+      }
+    },
+    "required": [
+      "timeTag",
+      "source",
+      "bxGsm",
+      "byGsm",
+      "bzGsm",
+      "bt"
+    ],
+    "type": "object"
+  },
+  {
+    "type": "null"
+  }
+]

Previous value: -[
-  {
-    "additionalProperties": false,
-    "description": "One plasma measurement from the active L1 spacecraft.",
-    "properties": {
-      "densityPerCm3": {
-        "anyOf": [
-          {
-            "type": "number"
-          },
-          {
-            "type": "null"
-          }
-        ],
-        "description": "Proton density in particles/cm³. Null when the feed omits the value."
-      },
-      "source": {
-        "description": "Spacecraft that reported this measurement, as named by the feed, e.g. \"SOLAR1\".",
-        "type": "string"
-      },
-      "speedKmS": {
-        "anyOf": [
-          {
-            "type": "number"
-          },
-          {
-            "type": "null"
-          }
-        ],
-        "description": "Solar wind speed in km/s. Null when the feed omits the value."
-      },
-      "temperatureK": {
-        "anyOf": [
-          {
-            "type": "number"
-          },
-          {
-            "type": "null"
-          }
-        ],
-        "description": "Proton temperature in Kelvin. Null when the feed omits the value."
-      },
-      "timeTag": {
-        "description": "ISO 8601 measurement time tag.",
-        "type": "string"
-      }
-    },
-    "required": [
-      "timeTag",
-      "source",
-      "densityPerCm3",
-      "speedKmS",
-      "temperatureK"
-    ],
-    "type": "object"
-  },
-  {
-    "type": "null"
-  }
-]New value: +[
+  {
+    "additionalProperties": false,
+    "description": "One plasma measurement from the active L1 spacecraft.",
+    "properties": {
+      "densityPerCm3": {
+        "description": "Proton density in particles/cm³. Null when the feed omits the value.",
+        "type": [
+          "number",
+          "null"
+        ]
+      },
+      "source": {
+        "description": "Spacecraft that reported this measurement, as named by the feed, e.g. \"SOLAR1\".",
+        "type": "string"
+      },
+      "speedKmS": {
+        "description": "Solar wind speed in km/s. Null when the feed omits the value.",
+        "type": [
+          "number",
+          "null"
+        ]
+      },
+      "temperatureK": {
+        "description": "Proton temperature in Kelvin. Null when the feed omits the value.",
+        "type": [
+          "number",
+          "null"
+        ]
+      },
+      "timeTag": {
+        "description": "ISO 8601 measurement time tag.",
+        "type": "string"
+      }
+    },
+    "required": [
+      "timeTag",
+      "source",
+      "densityPerCm3",
+      "speedKmS",
+      "temperatureK"
+    ],
+    "type": "object"
+  },
+  {
+    "type": "null"
+  }
+]

Removed value: -[
-  {
-    "type": "number"
-  },
-  {
-    "type": "null"
-  }
-]

Added value: +[
+  "number",
+  "null"
+]

Removed value: -[
-  {
-    "type": "number"
-  },
-  {
-    "type": "null"
-  }
-]

Added value: +[
+  "number",
+  "null"
+]

Removed value: -[
-  {
-    "type": "number"
-  },
-  {
-    "type": "null"
-  }
-]

Added value: +[
+  "number",
+  "null"
+]

Removed value: -[
-  {
-    "type": "number"
-  },
-  {
-    "type": "null"
-  }
-]

Added value: +[
+  "number",
+  "null"
+]

Removed value: -[
-  {
-    "type": "number"
-  },
-  {
-    "type": "null"
-  }
-]

Added value: +[
+  "number",
+  "null"
+]

Removed value: -[
-  {
-    "type": "number"
-  },
-  {
-    "type": "null"
-  }
-]

Added value: +[
+  "number",
+  "null"
+]

Removed value: -[
-  {
-    "type": "number"
-  },
-  {
-    "type": "null"
-  }
-]

Added value: +[
+  "number",
+  "null"
+]

Previous value: -"http://json-schema.org/draft-07/schema#"New value: +"https://json-schema.org/draft/2020-12/schema"

Added value: +false

Previous value: -"http://json-schema.org/draft-07/schema#"New value: +"https://json-schema.org/draft/2020-12/schema"

Added value: +[
+  {
+    "not": {
+      "required": [
+        "error"
+      ]
+    },
+    "required": [
+      "plasma",
+      "mag",
+      "latestPlasma",
+      "latestMag",
+      "bzStatus",
+      "plasmaCount",
+      "magCount",
+      "latestFeedPlasmaTime",
+      "latestFeedMagTime",
+      "feedStalenessHours"
+    ]
+  },
+  {
+    "required": [
+      "error"
+    ]
+  }
+]

Added value: +{
+  "additionalProperties": {},
+  "description": "Present when the call failed. Absent on success.",
+  "properties": {
+    "code": {
+      "description": "JSON-RPC error code for this failure.",
+      "maximum": 9007199254740991,
+      "minimum": -9007199254740991,
+      "type": "integer"
+    },
+    "data": {
+      "additionalProperties": {},
+      "properties": {
+        "reason": {
+          "description": "Machine-readable failure mode. Declared by this tool: `feed_unavailable`: SWPC endpoint returns non-OK status or times out after retries. Other values are possible when a failure originates below the handler.",
+          "examples": [
+            "feed_unavailable"
+          ],
+          "type": "string"
+        },
+        "recovery": {
+          "additionalProperties": {},
+          "description": "Actionable next step for the caller.",
+          "properties": {
+            "hint": {
+              "type": "string"
+            }
+          },
+          "required": [
+            "hint"
+          ],
+          "type": "object"
+        },
+        "retryable": {
+          "description": "Whether retrying may succeed.",
+          "type": "boolean"
+        }
+      },
+      "type": "object"
+    },
+    "message": {
+      "description": "Human-readable description of what went wrong.",
+      "type": "string"
+    }
+  },
+  "required": [
+    "code",
+    "message"
+  ],
+  "type": "object"
+}

Removed value: -[
-  "plasma",
-  "mag",
-  "latestPlasma",
-  "latestMag",
-  "bzStatus",
-  "plasmaCount",
-  "magCount",
-  "latestFeedPlasmaTime",
-  "latestFeedMagTime",
-  "feedStalenessHours"
-]

Previous value: -"Hours of recent solar wind history to return (1–168, default 3). Feeds update ~every 1 min."New value: +"Hours of recent solar wind history to return (1–168, default 3). Records update ~every 1 min, but the feed only carries roughly the last 24 hours — a larger window returns the whole feed, not more history. When a window comes back empty, feedStalenessHours and latestFeedPlasmaTime/latestFeedMagTime report how current the feed actually is."

Added value: +{
+  "anyOf": [
+    {
+      "type": "number"
+    },
+    {
+      "type": "null"
+    }
+  ],
+  "description": "Hours between now and the newest record across both feeds — how far behind real time the upstream data is. Null when both feeds returned no active-spacecraft records."
+}

Added value: +{
+  "anyOf": [
+    {
+      "type": "string"
+    },
+    {
+      "type": "null"
+    }
+  ],
+  "description": "ISO 8601 time of the newest magnetic field record the feed carries, ignoring the window. Null when the feed returned no active-spacecraft mag records."
+}

Added value: +{
+  "anyOf": [
+    {
+      "type": "string"
+    },
+    {
+      "type": "null"
+    }
+  ],
+  "description": "ISO 8601 time of the newest plasma record the feed carries, ignoring the window. Null when the feed returned no active-spacecraft plasma records. Compare against the window to tell a quiet feed from a stale one."
+}

Previous value: -[
-  {
-    "additionalProperties": false,
-    "description": "One DSCOVR magnetic field measurement.",
-    "properties": {
-      "bt": {
-        "anyOf": [
-          {
-            "type": "number"
-          },
-          {
-            "type": "null"
-          }
-        ],
-        "description": "Total field magnitude Bt (nT). Null when sensor fill value."
-      },
-      "bxGsm": {
-        "anyOf": [
-          {
-            "type": "number"
-          },
-          {
-            "type": "null"
-          }
-        ],
-        "description": "Bx component in GSM coordinates (nT). Null when sensor fill value."
-      },
-      "byGsm": {
-        "anyOf": [
-          {
-            "type": "number"
-          },
-          {
-            "type": "null"
-          }
-        ],
-        "description": "By component in GSM coordinates (nT). Null when sensor fill value."
-      },
-      "bzGsm": {
-        "anyOf": [
-          {
-            "type": "number"
-          },
-          {
-            "type": "null"
-          }
-        ],
-        "description": "Bz component in GSM coordinates (nT). Southward (negative) drives geomagnetic storms. Null when sensor fill value."
-      },
-      "timeTag": {
-        "description": "ISO 8601 measurement time tag.",
-        "type": "string"
-      }
-    },
-    "required": [
-      "timeTag",
-      "bxGsm",
-      "byGsm",
-      "bzGsm",
-      "bt"
-    ],
-    "type": "object"
-  },
-  {
-    "type": "null"
-  }
-]New value: +[
+  {
+    "additionalProperties": false,
+    "description": "One magnetic field measurement from the active L1 spacecraft.",
+    "properties": {
+      "bt": {
+        "anyOf": [
+          {
+            "type": "number"
+          },
+          {
+            "type": "null"
+          }
+        ],
+        "description": "Total field magnitude Bt (nT). Null when the feed omits the value."
+      },
+      "bxGsm": {
+        "anyOf": [
+          {
+            "type": "number"
+          },
+          {
+            "type": "null"
+          }
+        ],
+        "description": "Bx component in GSM coordinates (nT). Null when the feed omits the value."
+      },
+      "byGsm": {
+        "anyOf": [
+          {
+            "type": "number"
+          },
+          {
+            "type": "null"
+          }
+        ],
+        "description": "By component in GSM coordinates (nT). Null when the feed omits the value."
+      },
+      "bzGsm": {
+        "anyOf": [
+          {
+            "type": "number"
+          },
+          {
+            "type": "null"
+          }
+        ],
+        "description": "Bz component in GSM coordinates (nT). Southward (negative) drives geomagnetic storms. Null when the feed omits the value."
+      },
+      "source": {
+        "description": "Spacecraft that reported this measurement, as named by the feed, e.g. \"SOLAR1\".",
+        "type": "string"
+      },
+      "timeTag": {
+        "description": "ISO 8601 measurement time tag.",
+        "type": "string"
+      }
+    },
+    "required": [
+      "timeTag",
+      "source",
+      "bxGsm",
+      "byGsm",
+      "bzGsm",
+      "bt"
+    ],
+    "type": "object"
+  },
+  {
+    "type": "null"
+  }
+]

Previous value: -[
-  {
-    "additionalProperties": false,
-    "description": "One DSCOVR plasma measurement.",
-    "properties": {
-      "densityPerCm3": {
-        "anyOf": [
-          {
-            "type": "number"
-          },
-          {
-            "type": "null"
-          }
-        ],
-        "description": "Proton density in particles/cm³. Null when sensor fill value."
-      },
-      "speedKmS": {
-        "anyOf": [
-          {
-            "type": "number"
-          },
-          {
-            "type": "null"
-          }
-        ],
-        "description": "Solar wind speed in km/s. Null when sensor fill value."
-      },
-      "temperatureK": {
-        "anyOf": [
-          {
-            "type": "number"
-          },
-          {
-            "type": "null"
-          }
-        ],
-        "description": "Proton temperature in Kelvin. Null when sensor fill value."
-      },
-      "timeTag": {
-        "description": "ISO 8601 measurement time tag.",
-        "type": "string"
-      }
-    },
-    "required": [
-      "timeTag",
-      "densityPerCm3",
-      "speedKmS",
-      "temperatureK"
-    ],
-    "type": "object"
-  },
-  {
-    "type": "null"
-  }
-]New value: +[
+  {
+    "additionalProperties": false,
+    "description": "One plasma measurement from the active L1 spacecraft.",
+    "properties": {
+      "densityPerCm3": {
+        "anyOf": [
+          {
+            "type": "number"
+          },
+          {
+            "type": "null"
+          }
+        ],
+        "description": "Proton density in particles/cm³. Null when the feed omits the value."
+      },
+      "source": {
+        "description": "Spacecraft that reported this measurement, as named by the feed, e.g. \"SOLAR1\".",
+        "type": "string"
+      },
+      "speedKmS": {
+        "anyOf": [
+          {
+            "type": "number"
+          },
+          {
+            "type": "null"
+          }
+        ],
+        "description": "Solar wind speed in km/s. Null when the feed omits the value."
+      },
+      "temperatureK": {
+        "anyOf": [
+          {
+            "type": "number"
+          },
+          {
+            "type": "null"
+          }
+        ],
+        "description": "Proton temperature in Kelvin. Null when the feed omits the value."
+      },
+      "timeTag": {
+        "description": "ISO 8601 measurement time tag.",
+        "type": "string"
+      }
+    },
+    "required": [
+      "timeTag",
+      "source",
+      "densityPerCm3",
+      "speedKmS",
+      "temperatureK"
+    ],
+    "type": "object"
+  },
+  {
+    "type": "null"
+  }
+]

Previous value: -"Magnetic field measurements (Bx, By, Bz, Bt) within the window."New value: +"Magnetic field measurements (Bx, By, Bz, Bt) within the window, oldest first."

Previous value: -"One DSCOVR magnetic field measurement."New value: +"One magnetic field measurement from the active L1 spacecraft."

Previous value: -"Total field magnitude Bt (nT). Null when sensor fill value."New value: +"Total field magnitude Bt (nT). Null when the feed omits the value."

Previous value: -"Bx component in GSM coordinates (nT). Null when sensor fill value."New value: +"Bx component in GSM coordinates (nT). Null when the feed omits the value."

Previous value: -"By component in GSM coordinates (nT). Null when sensor fill value."New value: +"By component in GSM coordinates (nT). Null when the feed omits the value."

Previous value: -"Bz component in GSM coordinates (nT). Southward (negative) drives geomagnetic storms. Null when sensor fill value."New value: +"Bz component in GSM coordinates (nT). Southward (negative) drives geomagnetic storms. Null when the feed omits the value."

Added value: +{
+  "description": "Spacecraft that reported this measurement, as named by the feed, e.g. \"SOLAR1\".",
+  "type": "string"
+}

Previous value: -[
-  "timeTag",
-  "bxGsm",
-  "byGsm",
-  "bzGsm",
-  "bt"
-]New value: +[
+  "timeTag",
+  "source",
+  "bxGsm",
+  "byGsm",
+  "bzGsm",
+  "bt"
+]

Added value: +{
+  "description": "Guidance when the requested window returned no plasma or magnetic field records — names the newest record the feed carries, or reports that the feed itself returned nothing from an active spacecraft.",
+  "type": "string"
+}

Previous value: -"Plasma measurements (speed, density, temperature) within the window."New value: +"Plasma measurements (speed, density, temperature) within the window, oldest first."

Previous value: -"One DSCOVR plasma measurement."New value: +"One plasma measurement from the active L1 spacecraft."

Previous value: -"Proton density in particles/cm³. Null when sensor fill value."New value: +"Proton density in particles/cm³. Null when the feed omits the value."

Added value: +{
+  "description": "Spacecraft that reported this measurement, as named by the feed, e.g. \"SOLAR1\".",
+  "type": "string"
+}

Previous value: -"Solar wind speed in km/s. Null when sensor fill value."New value: +"Solar wind speed in km/s. Null when the feed omits the value."

Previous value: -"Proton temperature in Kelvin. Null when sensor fill value."New value: +"Proton temperature in Kelvin. Null when the feed omits the value."

Previous value: -[
-  "timeTag",
-  "densityPerCm3",
-  "speedKmS",
-  "temperatureK"
-]New value: +[
+  "timeTag",
+  "source",
+  "densityPerCm3",
+  "speedKmS",
+  "temperatureK"
+]

Previous value: -[
-  "plasma",
-  "mag",
-  "latestPlasma",
-  "latestMag",
-  "bzStatus",
-  "plasmaCount",
-  "magCount"
-]New value: +[
+  "plasma",
+  "mag",
+  "latestPlasma",
+  "latestMag",
+  "bzStatus",
+  "plasmaCount",
+  "magCount",
+  "latestFeedPlasmaTime",
+  "latestFeedMagTime",
+  "feedStalenessHours"
+]