Added value: +"date"

Previous value: -"^\\d{4}-\\d{2}-\\d{2}$"New value: +"^(?:(?:\\d\\d[2468][048]|\\d\\d[13579][26]|\\d\\d0[48]|[02468][048]00|[13579][26]00)-02-29|\\d{4}-(?:(?:0[13578]|1[02])-(?:0[1-9]|[12]\\d|3[01])|(?:0[469]|11)-(?:0[1-9]|[12]\\d|30)|(?:02)-(?:0[1-9]|1\\d|2[0-8])))$"

Added value: +"date"

Previous value: -"^\\d{4}-\\d{2}-\\d{2}$"New value: +"^(?:(?:\\d\\d[2468][048]|\\d\\d[13579][26]|\\d\\d0[48]|[02468][048]00|[13579][26]00)-02-29|\\d{4}-(?:(?:0[13578]|1[02])-(?:0[1-9]|[12]\\d|3[01])|(?:0[469]|11)-(?:0[1-9]|[12]\\d|30)|(?:02)-(?:0[1-9]|1\\d|2[0-8])))$"

Previous value: -"Machine-readable failure mode. Declared by this tool: `date_out_of_range`: start_date predates 1940-01-01, or the requested dates fall outside the coverage of the selected model. `date_order_invalid`: The end_date value is earlier than the start_date value. `no_variables_requested`: Neither hourly_variables nor daily_variables was provided. `invalid_variable`: An unknown variable name or unsupported archive model was requested. `variable_wrong_cadence`: A variable sat in the cadence field Open-Meteo does not document it under — for example cloud_cover in daily_variables, or temperature_2m_max in hourly_variables — caught before the request is sent. `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: `date_out_of_range`: start_date predates 1940-01-01, or the requested dates fall outside the coverage of the selected model. `date_order_invalid`: The end_date value is earlier than the start_date value. `no_variables_requested`: Neither hourly_variables nor daily_variables named a variable — blank or whitespace-only entries do not count. `invalid_variable`: An unknown variable name or unsupported archive model was requested. `variable_wrong_cadence`: A variable sat in the cadence field Open-Meteo does not document it under — for example cloud_cover in daily_variables, or temperature_2m_max in hourly_variables — caught before the request is sent. `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. `rate_limited`: Open-Meteo answered HTTP 429 because a free-tier request limit was reached. Other values are possible when a failure originates below the handler."

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

Previous value: -"Machine-readable failure mode. Declared by this tool: `date_out_of_range`: start_date predates 1940-01-01, or the requested dates fall outside the coverage of the selected model. `date_order_invalid`: end_date is before start_date. `no_variables_requested`: Neither hourly_variables nor daily_variables was provided. `invalid_variable`: An unknown variable name or unsupported archive model was requested. `variable_wrong_cadence`: A variable Open-Meteo documents under one cadence was passed in the other cadence field — for example cloud_cover in daily_variables, or temperature_2m_max in hourly_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: `date_out_of_range`: start_date predates 1940-01-01, or the requested dates fall outside the coverage of the selected model. `date_order_invalid`: The end_date value is earlier than the start_date value. `no_variables_requested`: Neither hourly_variables nor daily_variables was provided. `invalid_variable`: An unknown variable name or unsupported archive model was requested. `variable_wrong_cadence`: A variable sat in the cadence field Open-Meteo does not document it under — for example cloud_cover in daily_variables, or temperature_2m_max in hourly_variables — caught before the request is sent. `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."

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

Previous value: -"Machine-readable failure mode. Declared by this tool: `date_out_of_range`: start_date predates 1940-01-01, or the requested dates fall outside the coverage of the selected model `date_order_invalid`: end_date is before start_date `no_variables_requested`: Neither hourly_variables nor daily_variables was provided `invalid_variable`: An unknown variable name or unsupported archive model was requested `variable_wrong_cadence`: A variable Open-Meteo documents under one cadence was passed in the other cadence field — for example cloud_cover in daily_variables, or temperature_2m_max in hourly_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: `date_out_of_range`: start_date predates 1940-01-01, or the requested dates fall outside the coverage of the selected model. `date_order_invalid`: end_date is before start_date. `no_variables_requested`: Neither hourly_variables nor daily_variables was provided. `invalid_variable`: An unknown variable name or unsupported archive model was requested. `variable_wrong_cadence`: A variable Open-Meteo documents under one cadence was passed in the other cadence field — for example cloud_cover in daily_variables, or temperature_2m_max in hourly_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: -"End date (YYYY-MM-DD, inclusive). Must be on or after start_date. For dates within the last ~5 days, use openmeteo_get_forecast with past_days instead."New value: +"End date (YYYY-MM-DD, inclusive). Must be on or after start_date. For the last few days, either request models: [\"ecmwf_ifs\"] or use openmeteo_get_forecast with past_days."

Previous value: -"Hourly ERA5 variables (e.g., [\"temperature_2m\", \"precipitation\", \"wind_speed_10m\", \"relative_humidity_2m\", \"cloud_cover\", \"soil_moisture_0_to_7cm\"]). Hourly names only — a daily aggregate such as temperature_2m_max or precipitation_sum belongs in daily_variables and is rejected here. At least one of hourly_variables or daily_variables required."New value: +"Hourly archive variables (e.g., [\"temperature_2m\", \"precipitation\", \"wind_speed_10m\", \"relative_humidity_2m\", \"cloud_cover\", \"soil_moisture_0_to_7cm\"]). Hourly names only — a daily aggregate such as temperature_2m_max or precipitation_sum belongs in daily_variables and is rejected here. At least one of hourly_variables or daily_variables required."

Added value: +{
+  "description": "Archive models to read from: best_match (default, blends IFS HRES + ERA5 + ERA5-Land), ecmwf_ifs (global 9 km, updated every 6 hours, no delay), ecmwf_ifs_analysis_long_window (global 9 km, daily, 2 days delay), era5_seamless (ERA5 and ERA5-Land combined), era5 (global 0.25° (~25 km), daily, 5 days delay), era5_land (global 0.1° (~11 km), daily, 5 days delay), era5_ensemble (global 0.5° (~55 km), daily, 5 days delay), cerra (Europe only, 5 km, no real-time updates). Omit to use Open-Meteo's Best Match default, which blends IFS HRES, ERA5, and ERA5-Land — pin a model instead when a consistent source matters across the range. With 2+ models each variable column is suffixed with the model name. cerra covers Europe only and is rejected as a coverage gap elsewhere. A name outside this list is sent upstream rather than rejected here.",
+  "items": {
+    "type": "string"
+  },
+  "maxItems": 8,
+  "type": "array"
+}

Previous value: -"Start date (YYYY-MM-DD, e.g., \"2024-07-01\"). ERA5 covers from 1940-01-01 to approximately 5 days ago."New value: +"Start date (YYYY-MM-DD, e.g., \"2024-07-01\"). The archive covers from 1940-01-01; how close to today it reaches depends on the model — the ERA5 family runs about 5 days behind, IFS HRES is current."

Previous value: -"Machine-readable failure mode. Declared by this tool: `date_out_of_range`: start_date predates 1940-01-01 or end_date is within the ERA5 lag window `date_order_invalid`: end_date is before start_date `no_variables_requested`: Neither hourly_variables nor daily_variables was provided `invalid_variable`: An unknown variable name was requested `variable_wrong_cadence`: A variable Open-Meteo documents under one cadence was passed in the other cadence field — for example cloud_cover in daily_variables, or temperature_2m_max in hourly_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: `date_out_of_range`: start_date predates 1940-01-01, or the requested dates fall outside the coverage of the selected model `date_order_invalid`: end_date is before start_date `no_variables_requested`: Neither hourly_variables nor daily_variables was provided `invalid_variable`: An unknown variable name or unsupported archive model was requested `variable_wrong_cadence`: A variable Open-Meteo documents under one cadence was passed in the other cadence field — for example cloud_cover in daily_variables, or temperature_2m_max in hourly_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."

Added value: +{
+  "description": "Archive models requested — echoes the models parameter. Absent when models was omitted, which means the data came from Open-Meteo Best Match (IFS HRES + ERA5 + ERA5-Land) and the source varies by date.",
+  "items": {
+    "type": "string"
+  },
+  "type": "array"
+}

Previous value: -"Machine-readable failure mode. Declared by this tool: `date_out_of_range`: start_date predates 1940-01-01 or end_date is within the ERA5 lag window `date_order_invalid`: end_date is before start_date `no_variables_requested`: Neither hourly_variables nor daily_variables was provided `invalid_variable`: An unknown variable name was requested `variable_wrong_cadence`: A variable Open-Meteo documents under one cadence was passed in the other cadence field — for example cloud_cover in daily_variables, or temperature_2m_max in hourly_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: `date_out_of_range`: start_date predates 1940-01-01 or end_date is within the ERA5 lag window `date_order_invalid`: end_date is before start_date `no_variables_requested`: Neither hourly_variables nor daily_variables was provided `invalid_variable`: An unknown variable name was requested `variable_wrong_cadence`: A variable Open-Meteo documents under one cadence was passed in the other cadence field — for example cloud_cover in daily_variables, or temperature_2m_max in hourly_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: -[
-  "date_out_of_range",
-  "date_order_invalid",
-  "no_variables_requested",
-  "invalid_variable",
-  "variable_wrong_cadence",
-  "invalid_timezone"
-]New value: +[
+  "date_out_of_range",
+  "date_order_invalid",
+  "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: columns the archive returned with the unit \"undefined\" (a name it parsed but does not serve in the requested cadence); recognized variables whose requested window falls outside the data's coverage, 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: columns the archive returned with the unit \"undefined\" (a name it parsed but does not serve in the requested cadence); recognized variables whose requested window falls outside the data's coverage, 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 multi-year or multi-variable queries. When a result is too large to return inline — driven by total payload size, so a wide multi-variable pull 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 multi-year or multi-variable queries. When a result is too large to return inline — driven by total payload size, so a wide multi-variable pull 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 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 columns, then to openmeteo_dataframe_query to run SQL against it."

Previous value: -"Warning that a requested variable came back with no data — names each column whose unit is \"undefined\", which is how the archive reports a name it parsed but does not serve in the requested cadence."New value: +"Everything this response needs to say beyond the data, composed into one advisory: columns the archive returned with the unit \"undefined\" (a name it parsed but does not serve in the requested cadence); recognized variables whose requested window falls outside the data's coverage, 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. Present only alongside canvas_id."

Previous value: -"Machine-readable failure mode. Declared by this tool: `date_out_of_range`: start_date predates 1940-01-01 or end_date is within the ERA5 lag window `date_order_invalid`: end_date is before start_date `no_variables_requested`: Neither hourly_variables nor daily_variables was provided `invalid_variable`: An unknown variable name was requested `variable_wrong_cadence`: A variable Open-Meteo documents under one cadence was passed in the other cadence field — for example cloud_cover in daily_variables, or temperature_2m_max in hourly_variables Other values are possible when a failure originates below the handler."New value: +"Machine-readable failure mode. Declared by this tool: `date_out_of_range`: start_date predates 1940-01-01 or end_date is within the ERA5 lag window `date_order_invalid`: end_date is before start_date `no_variables_requested`: Neither hourly_variables nor daily_variables was provided `invalid_variable`: An unknown variable name was requested `variable_wrong_cadence`: A variable Open-Meteo documents under one cadence was passed in the other cadence field — for example cloud_cover in daily_variables, or temperature_2m_max in hourly_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: -[
-  "date_out_of_range",
-  "date_order_invalid",
-  "no_variables_requested",
-  "invalid_variable",
-  "variable_wrong_cadence"
-]New value: +[
+  "date_out_of_range",
+  "date_order_invalid",
+  "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",
+      "date_range",
+      "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: `date_out_of_range`: start_date predates 1940-01-01 or end_date is within the ERA5 lag window `date_order_invalid`: end_date is before start_date `no_variables_requested`: Neither hourly_variables nor daily_variables was provided `invalid_variable`: An unknown variable name was requested `variable_wrong_cadence`: A variable Open-Meteo documents under one cadence was passed in the other cadence field — for example cloud_cover in daily_variables, or temperature_2m_max in hourly_variables Other values are possible when a failure originates below the handler.",
+          "examples": [
+            "date_out_of_range",
+            "date_order_invalid",
+            "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",
-  "date_range",
-  "record_count",
-  "truncated"
-]

Previous value: -"Daily summary variables (e.g., [\"temperature_2m_max\", \"temperature_2m_min\", \"precipitation_sum\", \"wind_speed_10m_max\"]). At least one of hourly_variables or daily_variables required."New value: +"Daily summary variables (e.g., [\"temperature_2m_max\", \"temperature_2m_min\", \"precipitation_sum\", \"wind_speed_10m_max\"]). Daily names only — an hourly name such as cloud_cover or temperature_2m belongs in hourly_variables and is rejected here; for a daily summary of an hourly variable use its published aggregate (cloud_cover_max, cloud_cover_mean, cloud_cover_min). At least one of hourly_variables or daily_variables required."

Previous value: -"Hourly ERA5 variables (e.g., [\"temperature_2m\", \"precipitation\", \"wind_speed_10m\", \"relative_humidity_2m\", \"cloud_cover\", \"soil_moisture_0_to_7cm\"]). At least one of hourly_variables or daily_variables required."New value: +"Hourly ERA5 variables (e.g., [\"temperature_2m\", \"precipitation\", \"wind_speed_10m\", \"relative_humidity_2m\", \"cloud_cover\", \"soil_moisture_0_to_7cm\"]). Hourly names only — a daily aggregate such as temperature_2m_max or precipitation_sum belongs in daily_variables and is rejected here. At least one of hourly_variables or daily_variables required."

Added value: +{
+  "description": "Warning that a requested variable came back with no data — names each column whose unit is \"undefined\", which is how the archive reports a name it parsed but does not serve in the requested cadence.",
+  "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) + variable keys. Absent when only hourly_variables were requested. When truncated, contains only a preview; query canvas_id for the full dataset."New value: +"Per-day records with \"time\" (YYYY-MM-DD) + variable keys. Absent when only hourly_variables were requested. When truncated, contains only a preview — query canvas_id for the full dataset when one is present."

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

Previous value: -"Total number of records (hourly or 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 multi-year or multi-variable queries. When a query exceeds ~500 records, results spill to this canvas for SQL querying. Omit to create a fresh canvas."New value: +"DataCanvas token for multi-year or multi-variable queries. When a result is too large to return inline — driven by total payload size, so a wide multi-variable pull 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 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."