diff --git a/api/glossary.md b/api/glossary.md
index 68c7274415..44a9e6bc96 100644
--- a/api/glossary.md
+++ b/api/glossary.md
@@ -19,6 +19,11 @@ This glossary defines technical terms, concepts, and terminology used in $COMPAN
 
 **Adaptive query optimization**: dynamic query plan adjustment based on actual execution statistics and data distribution patterns, improving performance over time.
 
+<a id="agent" href=""></a>
+**Agent**: a system that uses prompts and other logic to act autonomously or semi-autonomously.
+
+**AI agent**: See [Agent](#agent). 
+
 **Aggregate (Continuous Aggregate)**: a materialized, precomputed summary of query results over time-series data, providing faster access to analytics.
 
 **Alerting**: the process of automatically notifying administrators when predefined conditions or thresholds are met in system monitoring.
@@ -397,8 +402,9 @@ This glossary defines technical terms, concepts, and terminology used in $COMPAN
 
 **Predictive maintenance**: the use of time-series data to forecast equipment failure, common in IoT and industrial applications.
 
-<a id="postgresql" href=""></a>
+**Prompt**: an input or instruction you give to an [Agent](#agent). A prompt is normally text, but may be multimodal. For example, images and text.
 
+<a id="postgresql" href=""></a>
 **$PG**: an open-source object-relational database system known for its reliability, robustness, and performance.
 
 **PostGIS**: a [$PG](#postgresql) extension that adds support for geographic objects and spatial queries.