diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9f16f3a..c177b94 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,6 +9,12 @@
  how a consumer would use the library or CLI tool (e.g. adding unit tests, updating documentation, etc) are not captured
  here.
 
+## Unreleased
+
+### Updated
+
+- CSV and JSON input for the CLI's bulk agent commands will now look for `agentGuid` as a column header, in addition to `agent_id`, `agentId`, and `guid`.
+
 ## 2.3.0 - 2025-03-18
 
 ### Added
diff --git a/src/_incydr_cli/cmds/agents.py b/src/_incydr_cli/cmds/agents.py
index 4c6dc93..ed59541 100644
--- a/src/_incydr_cli/cmds/agents.py
+++ b/src/_incydr_cli/cmds/agents.py
@@ -140,7 +140,7 @@ def bulk_activate(file: Path, format_: str):
     Input files require a header (for CSV input) or JSON key for each object (for JSON-LINES input) to identify
     which agent ID to activate.
 
-    Header and JSON key values that are accepted are: agent_id, agentId, or guid
+    Header and JSON key values that are accepted are: agentGuid, agent_id, agentId, or guid
     """
     chunk_size = (
         environ.get("incydr_batch_size") or environ.get("INCYDR_BATCH_SIZE") or 50
@@ -190,7 +190,7 @@ def bulk_deactivate(file: Path, format_: str):
     Input files require a header (for CSV input) or JSON key for each object (for JSON-LINES input) to identify
     which agent ID to deactivate.
 
-    Header and JSON key values that are accepted are: agent_id, agentId, or guid
+    Header and JSON key values that are accepted are: agentGuid, agent_id, agentId, or guid
     """
     chunk_size = (
         environ.get("incydr_batch_size") or environ.get("INCYDR_BATCH_SIZE") or 50
diff --git a/src/_incydr_cli/cmds/models.py b/src/_incydr_cli/cmds/models.py
index a5f9515..4a91e54 100644
--- a/src/_incydr_cli/cmds/models.py
+++ b/src/_incydr_cli/cmds/models.py
@@ -27,7 +27,7 @@ def user(self):
 
 
 class AgentCSV(CSVModel):
-    agent_id: str = Field(csv_aliases=["agent_id", "agentId", "guid"])
+    agent_id: str = Field(csv_aliases=["agentGuid", "agent_id", "agentId", "guid"])
 
 
 class AgentJSON(Model):
@@ -35,7 +35,10 @@ class AgentJSON(Model):
 
     @root_validator(pre=True)
     def _validate(cls, values):  # noqa
-        if "agent_id" in values:
+        if "agentGuid" in values:
+            values["agent_id"] = values["agentGuid"]
+            return values
+        elif "agent_id" in values:
             return values
         elif "agentId" in values:
             values["agent_id"] = values["agentId"]
@@ -45,5 +48,5 @@ def _validate(cls, values):  # noqa
             return values
         else:
             raise ValueError(
-                "A json key of 'agent_id', 'agentId', or 'guid' is required"
+                "A json key of 'agentGuid', 'agent_id', 'agentId', or 'guid' is required"
             )