Added value: +"^[A-Za-z0-9_-]{10}$"

Previous value: -"Machine-readable failure mode. Declared by this tool: `no_variables_requested`: Neither hourly_variables nor daily_variables was provided `invalid_variable`: An unknown variable name or unsupported model was requested `variable_wrong_cadence`: A variable the ensemble API documents under one cadence was passed in the other cadence field — for example precipitation_sum in hourly_variables, or precipitation in daily_variables `invalid_timezone`: timezone was blank, or upstream did not recognize the requested time zone `request_too_large`: Open-Meteo refused the request as asking for too much data in one call Other values are possible when a failure originates below the handler."New value: +"Machine-readable failure mode. Declared by this tool: `no_variables_requested`: Neither hourly_variables nor daily_variables was provided. `invalid_variable`: An unknown variable name or unsupported model was requested. `variable_wrong_cadence`: A variable the ensemble API documents under one cadence was passed in the other cadence field — for example precipitation_sum in hourly_variables, or precipitation in daily_variables. `invalid_timezone`: timezone was blank, or upstream did not recognize the requested time zone. `request_too_large`: Open-Meteo refused the request as asking for too much data in one call. Other values are possible when a failure originates below the handler."

Previous value: -"Machine-readable failure mode. Declared by this tool: `no_variables_requested`: Neither hourly_variables nor daily_variables was provided `invalid_variable`: An unknown variable name or unsupported model was requested `variable_wrong_cadence`: A variable the ensemble API documents under one cadence was passed in the other cadence field — for example precipitation_sum in hourly_variables, or precipitation in daily_variables `invalid_timezone`: timezone was blank, or upstream did not recognize the requested time zone Other values are possible when a failure originates below the handler."New value: +"Machine-readable failure mode. Declared by this tool: `no_variables_requested`: Neither hourly_variables nor daily_variables was provided `invalid_variable`: An unknown variable name or unsupported model was requested `variable_wrong_cadence`: A variable the ensemble API documents under one cadence was passed in the other cadence field — for example precipitation_sum in hourly_variables, or precipitation in daily_variables `invalid_timezone`: timezone was blank, or upstream did not recognize the requested time zone `request_too_large`: Open-Meteo refused the request as asking for too much data in one call Other values are possible when a failure originates below the handler."

Previous value: -[
-  "no_variables_requested",
-  "invalid_variable",
-  "variable_wrong_cadence",
-  "invalid_timezone"
-]New value: +[
+  "no_variables_requested",
+  "invalid_variable",
+  "variable_wrong_cadence",
+  "invalid_timezone",
+  "request_too_large"
+]

Previous value: -"Everything this response needs to say beyond the data, composed into one advisory: variables the endpoint returned with the unit \"undefined\" across every member (a name the selected model does not carry); recognized variables whose requested window runs past the model's horizon, with the timestamps that do carry values; and, when the result spilled, the canvas and table holding the full row set plus the two dataframe tools that read it."New value: +"Everything this response needs to say beyond the data, composed into one advisory: variables the endpoint returned with the unit \"undefined\" across every member (a name the selected model does not carry); recognized variables whose requested window runs past the model's horizon, with the timestamps that do carry values; and, when the result spilled, either the canvas and table holding the full row set plus the two dataframe tools that read it, or — with DataCanvas disabled — why there is no canvas_id and how to reach the rows the preview omits."

Previous value: -"DataCanvas token for large multi-member queries. When a result is too large to return inline — driven by total payload size, so a wide member fan-out can spill at any row count — it spills to this canvas for SQL querying. Omit to create a fresh canvas."New value: +"DataCanvas token for large multi-member queries. When a result is too large to return inline — driven by total payload size, so a wide member fan-out can spill at any row count — it spills to this canvas: pass the returned token to openmeteo_dataframe_describe to list the staged table and its per-member columns, then to openmeteo_dataframe_query to run SQL against it. Omit to create a fresh canvas."

Previous value: -"DataCanvas token for the staged full dataset. Present only when truncated is true AND DataCanvas is enabled (CANVAS_PROVIDER_TYPE=duckdb) — absent otherwise, in which case the preview is all this response carries. Query with SQL using this token."New value: +"DataCanvas token for the staged full dataset. Present only when truncated is true AND DataCanvas is enabled (CANVAS_PROVIDER_TYPE=duckdb) — absent otherwise, in which case the preview is all this response carries. Pass to openmeteo_dataframe_describe to list the staged table and its per-member columns, then to openmeteo_dataframe_query to run SQL against it."

Previous value: -"Warning that a requested variable came back with no data across every member — names each variable whose unit is \"undefined\", which is how the endpoint reports a name the selected model does not carry."New value: +"Everything this response needs to say beyond the data, composed into one advisory: variables the endpoint returned with the unit \"undefined\" across every member (a name the selected model does not carry); recognized variables whose requested window runs past the model's horizon, with the timestamps that do carry values; and, when the result spilled, the canvas and table holding the full row set plus the two dataframe tools that read it."

Previous value: -"DuckDB table name for the staged data — pass to openmeteo_dataframe_query. Present only alongside canvas_id."New value: +"DuckDB table name for the staged data — use as the FROM target in openmeteo_dataframe_query SQL; openmeteo_dataframe_describe lists its columns, which is the only way to learn the per-member suffixes this request produced. Present only alongside canvas_id."

Previous value: -"Machine-readable failure mode. Declared by this tool: `no_variables_requested`: Neither hourly_variables nor daily_variables was provided `invalid_variable`: An unknown variable name or unsupported model was requested `variable_wrong_cadence`: A variable the ensemble API documents under one cadence was passed in the other cadence field — for example precipitation_sum in hourly_variables, or precipitation in daily_variables Other values are possible when a failure originates below the handler."New value: +"Machine-readable failure mode. Declared by this tool: `no_variables_requested`: Neither hourly_variables nor daily_variables was provided `invalid_variable`: An unknown variable name or unsupported model was requested `variable_wrong_cadence`: A variable the ensemble API documents under one cadence was passed in the other cadence field — for example precipitation_sum in hourly_variables, or precipitation in daily_variables `invalid_timezone`: timezone was blank, or upstream did not recognize the requested time zone Other values are possible when a failure originates below the handler."

Previous value: -[
-  "no_variables_requested",
-  "invalid_variable",
-  "variable_wrong_cadence"
-]New value: +[
+  "no_variables_requested",
+  "invalid_variable",
+  "variable_wrong_cadence",
+  "invalid_timezone"
+]

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": [
+      "latitude",
+      "longitude",
+      "elevation",
+      "timezone",
+      "record_count",
+      "truncated"
+    ]
+  },
+  {
+    "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: `no_variables_requested`: Neither hourly_variables nor daily_variables was provided `invalid_variable`: An unknown variable name or unsupported model was requested `variable_wrong_cadence`: A variable the ensemble API documents under one cadence was passed in the other cadence field — for example precipitation_sum in hourly_variables, or precipitation in daily_variables Other values are possible when a failure originates below the handler.",
+          "examples": [
+            "no_variables_requested",
+            "invalid_variable",
+            "variable_wrong_cadence"
+          ],
+          "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: -[
-  "latitude",
-  "longitude",
-  "elevation",
-  "timezone",
-  "record_count",
-  "truncated"
-]

Previous value: -"Ensemble model to use: \"ecmwf_ifs025\" (51 members, global 0.25°), \"gfs025\" (31 members), \"icon_seamless\" (40 members), \"gem_global\" (21 members). Omit to use the API default blend."New value: +"Ensemble model to use, one name: ecmwf_ifs025_ensemble (51 members, global 0.25°), ecmwf_aifs025_ensemble (51, global 0.25°), ecmwf_ifs_europe_ensemble (51, Europe 9 km), ecmwf_aifs_europe_ensemble (51, Europe 31 km), google_weathernext2_ensemble (64, global 0.25°), ncep_gefs_seamless (31, global blend), ncep_gefs025 (31, global 0.25°), ncep_gefs05 (31, global 50 km, 35 days), ncep_aigefs025 (31, global 0.25°), icon_seamless_eps (20–40, global/Europe blend), icon_global_eps (40, global 26 km), icon_eu_eps (40, Europe 13 km), icon_d2_eps (20, Central Europe 2 km), gem_global_ensemble (21, global 0.25°), bom_access_global_ensemble (18, global 40 km), ukmo_global_ensemble_20km (18, global 20 km), ukmo_uk_ensemble_2km (3, UK 2 km), meteoswiss_icon_ch1_ensemble (11, Central Europe 1 km), meteoswiss_icon_ch2_ensemble (21, Central Europe 2 km). Member counts include the control run. Omit to use the API default blend. A name outside this list is sent upstream rather than rejected here, so a model Open-Meteo adds later still works."

Previous value: -"Ensemble model used (e.g. \"ecmwf_ifs025\") — echoes the requested models parameter. Absent when models was omitted (API default blend; the API reports no provenance)."New value: +"Ensemble model used (e.g. \"ecmwf_ifs025_ensemble\") — echoes the requested models parameter. Absent when models was omitted (API default blend; the API reports no provenance)."

Previous value: -"Daily variables to fetch across all ensemble members (e.g., [\"temperature_2m_max\", \"temperature_2m_min\", \"precipitation_sum\"]). Each variable appears as temperature_2m_max_member01, … At least one of hourly_variables or daily_variables required."New value: +"Daily variables to fetch across all ensemble members (e.g., [\"temperature_2m_max\", \"temperature_2m_min\", \"precipitation_sum\"]). Each variable appears as temperature_2m_max_member01, … Daily names only — an hourly name such as precipitation or temperature_2m belongs in hourly_variables and is rejected here; for a daily summary use its published aggregate (precipitation_sum, temperature_2m_max). At least one of hourly_variables or daily_variables required."

Previous value: -"Hourly variables to fetch across all ensemble members (e.g., [\"temperature_2m\", \"precipitation\", \"wind_speed_10m\"]). Each variable appears as temperature_2m_member01, temperature_2m_member02, … in the output. At least one of hourly_variables or daily_variables required."New value: +"Hourly variables to fetch across all ensemble members (e.g., [\"temperature_2m\", \"precipitation\", \"wind_speed_10m\"]). Each variable appears as temperature_2m_member01, temperature_2m_member02, … in the output. Hourly names only — a daily-only aggregate such as precipitation_sum or wind_speed_10m_max belongs in daily_variables and is rejected here; temperature_2m_max and temperature_2m_min are an exception, published here as 3-hourly aggregations as well as daily. At least one of hourly_variables or daily_variables required."

Added value: +{
+  "description": "Warning that a requested variable came back with no data across every member — names each variable whose unit is \"undefined\", which is how the endpoint reports a name the selected model does not carry.",
+  "type": "string"
+}

Previous value: -"Latitude in decimal degrees. Use openmeteo_geocode to resolve a place name to coordinates."New value: +"Latitude in decimal degrees. Use openmeteo_search_locations to resolve a place name to coordinates."

Previous value: -"DataCanvas token — present only when truncated is true (data spilled). Query with SQL using this token."New value: +"DataCanvas token for the staged full dataset. Present only when truncated is true AND DataCanvas is enabled (CANVAS_PROVIDER_TYPE=duckdb) — absent otherwise, in which case the preview is all this response carries. Query with SQL using this token."

Previous value: -"Per-day records with \"time\" (YYYY-MM-DD) + per-member columns (e.g., temperature_2m_max_member01). Absent when only hourly_variables were requested. When truncated, contains a preview only; query canvas_id for the full dataset."New value: +"Per-day records with \"time\" (YYYY-MM-DD) + per-member columns (e.g., temperature_2m_max_member01). Absent when only hourly_variables were requested. When truncated, contains a preview only — query canvas_id for the full dataset when one is present."

Previous value: -"Per-hour records with \"time\" (ISO 8601) + per-member columns for each requested variable (e.g., temperature_2m_member01, temperature_2m_member02). Absent when only daily_variables were requested. When truncated, contains a preview only; query canvas_id for the full dataset."New value: +"Per-hour records with \"time\" (ISO 8601) + per-member columns for each requested variable (e.g., temperature_2m_member01, temperature_2m_member02). Absent when only daily_variables were requested. When truncated, contains a preview only — query canvas_id for the full dataset when one is present."

Previous value: -"Total number of records (hourly + daily rows) in this response"New value: +"Total number of records (hourly + daily rows) — the full upstream total when truncated is true, not the combined length of the hourly and daily previews."

Previous value: -"DuckDB table name for the staged data — pass to openmeteo_dataframe_query. Present only when truncated is true."New value: +"DuckDB table name for the staged data — pass to openmeteo_dataframe_query. Present only alongside canvas_id."

Previous value: -"True when the response was too large to return inline and data spilled to canvas_id. Query the canvas for the full dataset — it holds every hourly and daily row, including any column the preview omits."New value: +"True when the response was too large to return inline, so hourly and daily carry a bounded preview rather than the full set. With DataCanvas enabled the complete data is staged at canvas_id — every hourly and daily row, including any column the preview omits. With it disabled there is no canvas_id, and the omitted rows are reached only by narrowing the request."

Previous value: -"DataCanvas token for large multi-member queries. When records exceed ~500, results spill to this canvas for SQL querying. Omit to create a fresh canvas."New value: +"DataCanvas token for large multi-member queries. When a result is too large to return inline — driven by total payload size, so a wide member fan-out can spill at any row count — it spills to this canvas for SQL querying. Omit to create a fresh canvas."

Previous value: -"True when the response exceeded the inline record limit and data spilled to canvas_id. Query the canvas for the full dataset."New value: +"True when the response was too large to return inline and data spilled to canvas_id. Query the canvas for the full dataset — it holds every hourly and daily row, including any column the preview omits."

Added value: +{
+  "description": "DuckDB table name for the staged data — pass to openmeteo_dataframe_query. Present only when truncated is true.",
+  "type": "string"
+}

Previous value: -"DataCanvas token — present when record_count exceeded inline limit. Query with SQL using this token."New value: +"DataCanvas token — present only when truncated is true (data spilled). Query with SQL using this token."

Previous value: -"Number of ensemble members in the response"New value: +"Number of distinct perturbed ensemble members in the response, counted from the _memberNN column suffixes. The unsuffixed base column (the control run) is not included in this count."

Previous value: -"Ensemble model used (e.g. \"ecmwf_ifs025\")"New value: +"Ensemble model used (e.g. \"ecmwf_ifs025\") — echoes the requested models parameter. Absent when models was omitted (API default blend; the API reports no provenance)."