diff --git a/OPENAPI_DOC.yml b/OPENAPI_DOC.yml
index f3c0bc1..a8af15e 100644
--- a/OPENAPI_DOC.yml
+++ b/OPENAPI_DOC.yml
@@ -4368,6 +4368,129 @@ paths:
             application/json:
               schema:
                 $ref: '#/components/schemas/Application__CommonError'
+  /api/staff/v1/events/history:
+    get:
+      summary: returns history records for events in the specified period
+      tags:
+      - Events
+      operationId: Events_history
+      parameters:
+      - name: period_start
+        in: query
+        description: event period start as a unix epoch
+        example: "1661725146"
+        required: true
+        schema:
+          type: integer
+          format: Int64
+      - name: period_end
+        in: query
+        description: event period end as a unix epoch
+        example: "1661743123"
+        required: true
+        schema:
+          type: integer
+          format: Int64
+      - name: calendars
+        in: query
+        description: a comma seperated list of calendar ids, recommend using `system_id`
+          for resource calendars
+        example: user@org.com,room2@resource.org.com
+        schema:
+          type: string
+          nullable: true
+      - name: zone_ids
+        in: query
+        description: a comma seperated list of zone ids
+        example: zone-123,zone-456
+        schema:
+          type: string
+          nullable: true
+      - name: system_ids
+        in: query
+        description: a comma seperated list of event spaces
+        example: sys-1234,sys-5678
+        schema:
+          type: string
+          nullable: true
+      - name: ical_uid
+        in: query
+        description: the ical uid of the event you are looking for
+        example: sqvitruh3ho3mrq896tplad4v8
+        schema:
+          type: string
+          nullable: true
+      responses:
+        200:
+          description: OK
+          content:
+            application/json:
+              schema:
+                type: array
+                items:
+                  $ref: '#/components/schemas/PlaceOS__Model__History'
+        429:
+          description: Too Many Requests
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/Application__CommonError'
+        400:
+          description: Bad Request
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/Application__CommonError'
+        401:
+          description: Unauthorized
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/Application__CommonError'
+        403:
+          description: Forbidden
+        404:
+          description: Not Found
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/Application__CommonError'
+        511:
+          description: Network Authentication Required
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/Application__CommonError'
+        406:
+          description: Not Acceptable
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/Application__ContentError'
+        415:
+          description: Unsupported Media Type
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/Application__ContentError'
+        422:
+          description: Unprocessable Entity
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/Application__ValidationError'
+        500:
+          description: Internal Server Error
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/Application__CommonError'
+        405:
+          description: Method Not Allowed
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/Application__CommonError'
   /api/staff/v1/events/{id}:
     get:
       summary: returns the event requested.
@@ -12281,6 +12404,34 @@ components:
       - private
       - all_day
       - attachments
+    PlaceOS__Model__History:
+      type: object
+      properties:
+        created_at:
+          type: integer
+          format: Int64
+          nullable: true
+        updated_at:
+          type: integer
+          format: Int64
+          nullable: true
+        type:
+          type: string
+          nullable: true
+        resource_id:
+          type: string
+          nullable: true
+        action:
+          type: string
+          nullable: true
+        changed_fields:
+          type: array
+          items:
+            type: string
+          nullable: true
+        id:
+          type: string
+          nullable: true
     _PlaceCalendar__Event__Attendee___PlaceOS__Model__Attendee_:
       anyOf:
       - type: object
diff --git a/shard.lock b/shard.lock
index 0071e1d..212bcce 100644
--- a/shard.lock
+++ b/shard.lock
@@ -59,7 +59,7 @@ shards:
 
   eventbus:
     git: https://github.com/spider-gazelle/eventbus.git
-    version: 1.0.0+git.commit.fab6102d472ce324db4df74c8df9f4a5fa22dafd
+    version: 1.0.1+git.commit.a707ac06aba16ba6070ff4972acfd839f1f05e15
 
   exception_page:
     git: https://github.com/crystal-loot/exception_page.git
@@ -131,11 +131,11 @@ shards:
 
   pg-orm:
     git: https://github.com/spider-gazelle/pg-orm.git
-    version: 2.0.5
+    version: 2.1.0
 
   place_calendar:
     git: https://github.com/placeos/calendar.git
-    version: 4.28.0
+    version: 4.28.1
 
   placeos:
     git: https://github.com/placeos/crystal-client.git
@@ -147,7 +147,7 @@ shards:
 
   placeos-models:
     git: https://github.com/placeos/models.git
-    version: 9.79.0
+    version: 9.81.0
 
   promise:
     git: https://github.com/spider-gazelle/promise.git
diff --git a/spec/controllers/events_spec.cr b/spec/controllers/events_spec.cr
index e23ceac..70ad7d4 100644
--- a/spec/controllers/events_spec.cr
+++ b/spec/controllers/events_spec.cr
@@ -1213,4 +1213,127 @@ describe Events, tags: ["event"] do
       request_body[0].should eq(created_event_id)
     end
   end
+
+  describe "#history" do
+    before_each do
+      History.clear
+    end
+
+    it "returns history for events in the specified period" do
+      tenant = get_tenant
+      event_start = 10.minutes.from_now.to_unix
+      event_end = 30.minutes.from_now.to_unix
+
+      # Create event metadata
+      event = EventMetadatasHelper.create_event(
+        tenant.id,
+        event_start: event_start,
+        event_end: event_end,
+        system_id: "sys-test-123"
+      )
+
+      # Create history records for the event
+      History.create!(
+        type: "event",
+        resource_id: event.event_id,
+        action: "created",
+        changed_fields: [] of String
+      )
+      History.create!(
+        type: "event",
+        resource_id: event.event_id,
+        action: "updated",
+        changed_fields: ["event_start", "event_end"]
+      )
+
+      # Query history
+      response = client.get(
+        "#{EVENTS_BASE}/history?period_start=#{event_start - 60}&period_end=#{event_end + 60}",
+        headers: headers
+      )
+      response.status_code.should eq(200)
+
+      histories = Array(History).from_json(response.body)
+      histories.size.should eq(2)
+      histories.map(&.action).should contain("created")
+      histories.map(&.action).should contain("updated")
+    end
+
+    it "filters history by system_ids" do
+      tenant = get_tenant
+      event_start = 10.minutes.from_now.to_unix
+      event_end = 30.minutes.from_now.to_unix
+
+      # Create events in different systems
+      event1 = EventMetadatasHelper.create_event(
+        tenant.id,
+        event_start: event_start,
+        event_end: event_end,
+        system_id: "sys-test-aaa"
+      )
+      event2 = EventMetadatasHelper.create_event(
+        tenant.id,
+        event_start: event_start,
+        event_end: event_end,
+        system_id: "sys-test-bbb"
+      )
+
+      # Create history for both events
+      History.create!(type: "event", resource_id: event1.event_id, action: "created", changed_fields: [] of String)
+      History.create!(type: "event", resource_id: event2.event_id, action: "created", changed_fields: [] of String)
+
+      # Query history filtered by system_id
+      response = client.get(
+        "#{EVENTS_BASE}/history?period_start=#{event_start - 60}&period_end=#{event_end + 60}&system_ids=sys-test-aaa",
+        headers: headers
+      )
+      response.status_code.should eq(200)
+
+      histories = Array(History).from_json(response.body)
+      histories.size.should eq(1)
+      histories.first.resource_id.should eq(event1.event_id)
+    end
+
+    it "returns empty array when no events in period" do
+      tenant = get_tenant
+      past_start = 2.hours.ago.to_unix
+      past_end = 1.hour.ago.to_unix
+
+      response = client.get(
+        "#{EVENTS_BASE}/history?period_start=#{past_start}&period_end=#{past_end}",
+        headers: headers
+      )
+      response.status_code.should eq(200)
+
+      histories = Array(History).from_json(response.body)
+      histories.size.should eq(0)
+    end
+
+    it "returns history matching by ical_uid" do
+      tenant = get_tenant
+      event_start = 10.minutes.from_now.to_unix
+      event_end = 30.minutes.from_now.to_unix
+
+      event = EventMetadatasHelper.create_event(
+        tenant.id,
+        event_start: event_start,
+        event_end: event_end,
+        ical_uid: "test-ical-uid-12345"
+      )
+
+      # Create history using ical_uid as resource_id (as might happen with some calendar providers)
+      History.create!(type: "event", resource_id: event.ical_uid, action: "updated", changed_fields: ["ext_data.notes"])
+
+      response = client.get(
+        "#{EVENTS_BASE}/history?period_start=#{event_start - 60}&period_end=#{event_end + 60}",
+        headers: headers
+      )
+      response.status_code.should eq(200)
+
+      histories = Array(History).from_json(response.body)
+      histories.size.should eq(1)
+      histories.first.resource_id.should eq(event.ical_uid)
+      histories.first.changed_fields.should eq(["ext_data.notes"])
+    end
+  end
 end
diff --git a/src/config.cr b/src/config.cr
index 9345a82..a4bb57f 100644
--- a/src/config.cr
+++ b/src/config.cr
@@ -16,6 +16,7 @@ alias EventMetadata = PlaceOS::Model::EventMetadata
 alias Booking = PlaceOS::Model::Booking
 alias Survey = PlaceOS::Model::Survey
 alias OutlookManifest = PlaceOS::Model::OutlookManifest
+alias History = PlaceOS::Model::History
 
 # Server required after application controllers
 require "action-controller/server"
diff --git a/src/controllers/events.cr b/src/controllers/events.cr
index ccedaf4..c57c733 100644
--- a/src/controllers/events.cr
+++ b/src/controllers/events.cr
@@ -320,6 +320,55 @@ class Events < Application
     }
   end
 
+  # returns history records for events in the specified period
+  @[AC::Route::GET("/history")]
+  def history(
+    @[AC::Param::Info(name: "period_start", description: "event period start as a unix epoch", example: "1661725146")]
+    starting : Int64,
+    @[AC::Param::Info(name: "period_end", description: "event period end as a unix epoch", example: "1661743123")]
+    ending : Int64,
+    @[AC::Param::Info(description: "a comma seperated list of calendar ids, recommend using `system_id` for resource calendars", example: "user@org.com,room2@resource.org.com")]
+    calendars : String? = nil,
+    @[AC::Param::Info(description: "a comma seperated list of zone ids", example: "zone-123,zone-456")]
+    zone_ids : String? = nil,
+    @[AC::Param::Info(description: "a comma seperated list of event spaces", example: "sys-1234,sys-5678")]
+    system_ids : String? = nil,
+    @[AC::Param::Info(name: "ical_uid", description: "the ical uid of the event you are looking for", example: "sqvitruh3ho3mrq896tplad4v8")]
+    icaluid : String? = nil,
+  ) : Array(History)
+    # Query EventMetadata for events in the time period
+    query = EventMetadata
+      .by_tenant(tenant.id)
+      .is_ending_after(starting)
+      .is_starting_before(ending)
+
+    # Filter by system_ids if provided
+    sys_ids = (system_ids || "").split(',').compact_map(&.strip.presence).uniq!
+    if sys_ids.size > 0
+      query = query.where({:system_id => sys_ids})
+    end
+
+    # Filter by calendars and zone_ids if provided
+    calendar_ids = matching_calendar_ids(calendars, zone_ids, nil, allow_default: false)
+    if calendar_ids.size > 0
+      query = query.where({:resource_calendar => calendar_ids.keys})
+    end
+
+    # Filter by ical_uid if provided
+    if icaluid
+      query = query.where({:ical_uid => icaluid})
+    end
+
+    metadatas = query.to_a
+    return [] of History if metadatas.empty?
+
+    # Collect event IDs from metadata
+    event_ids = metadatas.flat_map { |meta| [meta.event_id, meta.ical_uid] }.uniq!
+
+    # Query history for these event IDs
+    History.where({:type => "event", :resource_id => event_ids}).to_a
+  end
+
   protected def can_create?(user_email : String, host_email : String, attendees : Array(String)) : Bool
     # if the current user is not then host then they should be an attendee
     return true if user_email == host_email
@@ -1293,6 +1342,20 @@ class Events < Application
              end
       notify_destroyed(system, event_id, meta.try &.ical_uid, event, meta, reason: :deleted)
     end
+
+    # Record history for calendar event change
+    record_event_history(event_id, change.to_s.downcase)
+  end
+
+  private def record_event_history(event_id : String, action : String, changed_fields : Array(String) = [] of String)
+    History.create!(
+      type: "event",
+      resource_id: event_id,
+      action: action,
+      changed_fields: changed_fields
+    )
+  rescue ex
+    Log.error(exception: ex) { "failed to record event history for #{event_id}" }
   end
 
   # returns the event requested.