diff --git a/app/MindWork AI Studio/Chat/ChatThread.cs b/app/MindWork AI Studio/Chat/ChatThread.cs
index 1e83bbb7..8965c37f 100644
--- a/app/MindWork AI Studio/Chat/ChatThread.cs	
+++ b/app/MindWork AI Studio/Chat/ChatThread.cs	
@@ -34,9 +34,11 @@ public sealed record ChatThread
         }
         ```
         
-        - Supported types are `bar`, `stacked_bar`, `line`, `pie`, and `donut`.
+        - Supported types are `bar`, `stacked_bar`, `line`, `pie`, `donut`, `heatmap`, and `time_series`.
         - Every series needs exactly one finite numeric value per category.
         - Pie and donut charts need exactly one series and non-negative values.
+        - For heatmaps, categories are the columns, series names are the rows, and series values are the cells.
+        - Time series categories must contain at least two strictly increasing ISO 8601 timestamps with `Z` or an explicit UTC offset.
         - Add a concise caption that correctly contextualizes the chart and may explain the chart's main finding.
         - Use only the fields shown above.
         - Keep other explanatory text outside the chart block.
diff --git a/app/MindWork AI Studio/Plugins/assistants/README.md b/app/MindWork AI Studio/Plugins/assistants/README.md
index 509bfe8b..320f78b5 100644
--- a/app/MindWork AI Studio/Plugins/assistants/README.md	
+++ b/app/MindWork AI Studio/Plugins/assistants/README.md	
@@ -99,7 +99,7 @@ When a chart is useful or explicitly requested, you may include one or more comp
   "schema_version": 1,
   "type": "bar",
   "title": "Chart title",
-  "caption": "Contextual interpretation of the diagram",
+  "caption": "Contextual interpretation of the chart",
   "data": {
     "categories": ["A", "B"],
     "series": [
@@ -112,10 +112,12 @@ When a chart is useful or explicitly requested, you may include one or more comp
 }
 ```
 
-- Supported types are `bar`, `stacked_bar`, `line`, `pie`, and `donut`.
+- Supported types are `bar`, `stacked_bar`, `line`, `pie`, `donut`, `heatmap`, and `time_series`.
 - Every series needs exactly one finite numeric value per category.
 - Pie and donut charts need exactly one series and non-negative values.
-- Add a concise caption that correctly contextualizes the diagram and may explain the chart's main finding.
+- For heatmaps, categories are the columns, series names are the rows, and series values are the cells.
+- Time series categories must contain at least two strictly increasing ISO 8601 timestamps with `Z` or an explicit UTC offset.
+- Add a concise caption that correctly contextualizes the chart and may explain the chart's main finding.
 - Use only the fields shown above.
 - Keep other explanatory text outside the chart block.
 ````
diff --git a/app/MindWork AI Studio/Plugins/assistants/plugin.lua b/app/MindWork AI Studio/Plugins/assistants/plugin.lua
index bf3ba020..78d1e7c3 100644
--- a/app/MindWork AI Studio/Plugins/assistants/plugin.lua	
+++ b/app/MindWork AI Studio/Plugins/assistants/plugin.lua	
@@ -70,7 +70,7 @@ When a chart is useful or explicitly requested, you may include one or more comp
   "schema_version": 1,
   "type": "bar",
   "title": "Chart title",
-  "caption": "Contextual interpretation of the diagram",
+  "caption": "Contextual interpretation of the chart",
   "data": {
     "categories": ["A", "B"],
     "series": [
@@ -83,10 +83,12 @@ When a chart is useful or explicitly requested, you may include one or more comp
 }
 ```
 
-- Supported types are `bar`, `stacked_bar`, `line`, `pie`, and `donut`.
+- Supported types are `bar`, `stacked_bar`, `line`, `pie`, `donut`, `heatmap`, and `time_series`.
 - Every series needs exactly one finite numeric value per category.
 - Pie and donut charts need exactly one series and non-negative values.
-- Add a concise caption that correctly contextualizes the diagram and may explain the chart's main finding.
+- For heatmaps, categories are the columns, series names are the rows, and series values are the cells.
+- Time series categories must contain at least two strictly increasing ISO 8601 timestamps with `Z` or an explicit UTC offset.
+- Add a concise caption that correctly contextualizes the chart and may explain the chart's main finding.
 - Use only the fields shown above.
 - Keep other explanatory text outside the chart block.
 ]]