diff --git a/source/Canopy-Core-Tests/CanopyDomainTest.class.st b/source/Canopy-Core-Tests/CanopyDomainTest.class.st
index d1db132..23e549f 100644
--- a/source/Canopy-Core-Tests/CanopyDomainTest.class.st
+++ b/source/Canopy-Core-Tests/CanopyDomainTest.class.st
@@ -120,25 +120,33 @@ CanopyDomainTest >> testRegisterDomainNamedRaisesOnCollisionAndDoesNotOverwrite
 ]
 
 { #category : 'as yet unclassified' }
-CanopyDomainTest >> testRegisterImageMetricsRegistersOnlyImageDomain [
+CanopyDomainTest >> testRegisterImageMetricsRegistersTheImageHalfUnderPharo [
+	"What Pharo says about itself is one domain, #pharo, with the image half below it - the
+	exported name pharo_image_... is that path and nothing else."
 	[ Canopy registerImageMetrics.
-	self assert: Canopy domainNames asArray equals: #( #image ) ]
+	self assert: Canopy domainNames asArray equals: #( #pharo ).
+	self assert: (Canopy / #pharo) keys asArray equals: #( #image ) ]
 		ensure: [ Canopy reset ]
 ]
 
 { #category : 'as yet unclassified' }
 CanopyDomainTest >> testRegisterSystemMetricsRegistersImageAndVirtualMachineDomains [
 	"registerSystemMetrics is an explicit opt-in, not an automatic image-startup hook (Norbert,
-	2026-07-21: not everyone wants this without being asked) - a caller invokes it themselves."
+	2026-07-21: not everyone wants this without being asked) - a caller invokes it themselves.
+	Both halves land under the single domain #pharo, which is where the deployed names come
+	from - see Canopy class>>registerSystemMetrics."
 	[ Canopy registerSystemMetrics.
-	self assertCollection: Canopy domainNames asArray hasSameElements: #( #image #virtualMachine ) ]
+	self assert: Canopy domainNames asArray equals: #( #pharo ).
+	self assertCollection: (Canopy / #pharo) keys asArray hasSameElements: #( #image #virtualMachine ) ]
 		ensure: [ Canopy reset ]
 ]
 
 { #category : 'as yet unclassified' }
-CanopyDomainTest >> testRegisterVirtualMachineMetricsRegistersOnlyVirtualMachineDomain [
+CanopyDomainTest >> testRegisterVirtualMachineMetricsRegistersTheVirtualMachineHalfUnderPharo [
+	"See testRegisterImageMetricsRegistersTheImageHalfUnderPharo - the same for the other half."
 	[ Canopy registerVirtualMachineMetrics.
-	self assert: Canopy domainNames asArray equals: #( #virtualMachine ) ]
+	self assert: Canopy domainNames asArray equals: #( #pharo ).
+	self assert: (Canopy / #pharo) keys asArray equals: #( #virtualMachine ) ]
 		ensure: [ Canopy reset ]
 ]
 
diff --git a/source/Canopy-Core/Canopy.class.st b/source/Canopy-Core/Canopy.class.st
index 74eee5e..96755cc 100644
--- a/source/Canopy-Core/Canopy.class.st
+++ b/source/Canopy-Core/Canopy.class.st
@@ -41,6 +41,7 @@ Canopy class >> registerDomainNamed: aSymbol with: aNode [
 
 { #category : 'domains' }
 Canopy class >> registerImageMetrics [
+	"Lands under the #pharo domain, see registerSystemMetrics."
 	SmalltalkImage canopyRegister.
 	Process canopyRegister.
 	File canopyRegister
@@ -48,14 +49,18 @@ Canopy class >> registerImageMetrics [
 
 { #category : 'domains' }
 Canopy class >> registerSystemMetrics [
-	"Convenience wrapper - registers both system-metrics domains. Not wired to any
-	automatic image-startup hook - a caller decides when (or whether) to invoke this."
+	"Everything Pharo says about itself, under the domain #pharo. That is where the exported
+	names pharo_image_... and pharo_virtualMachine_... come from: a metric is named after where
+	it hangs, so the tree says it once instead of the endpoint renaming it a second time.
+	Not wired to any automatic image-startup hook - a caller decides when (or whether) to
+	invoke this."
 	self registerImageMetrics.
 	self registerVirtualMachineMetrics
 ]
 
 { #category : 'domains' }
 Canopy class >> registerVirtualMachineMetrics [
+	"Lands under the #pharo domain, see registerSystemMetrics."
 	VirtualMachine canopyRegister.
 	^ ExternalSemaphoreTable canopyRegister
 ]
diff --git a/source/Canopy-Metrics-Tests/CanopyMetricsHandlerTest.class.st b/source/Canopy-Metrics-Tests/CanopyMetricsHandlerTest.class.st
index e251459..3372443 100644
--- a/source/Canopy-Metrics-Tests/CanopyMetricsHandlerTest.class.st
+++ b/source/Canopy-Metrics-Tests/CanopyMetricsHandlerTest.class.st
@@ -85,3 +85,18 @@ CanopyMetricsHandlerTest >> testHandleRequestWithConfigOnlyExportsConfiguredDoma
 	self deny: (body includesSubstring: 'beta')
 	] ensure: [ Canopy reset ]
 ]
+
+{ #category : 'tests' }
+CanopyMetricsHandlerTest >> testRegisteredSystemMetricsAreExportedUnderTheirPharoNames [
+	"What Pharo says about itself is one domain, #pharo, and a series is named after the path to
+	its node - so pharo_virtualMachine_memorySize comes out of an unconfigured handler, with
+	nothing prepended anywhere. Before, the two halves were domains of their own and the name
+	only became the deployed one because the endpoint had been told to prefix them."
+	| body |
+	[ Canopy registerSystemMetrics.
+	self assertCollection: Canopy domainNames asArray hasSameElements: #( #pharo ).
+	body := (CanopyMetricsHandler new handleRequest: nil) entity contents.
+	self assert: (body includesSubstring: 'pharo_virtualMachine_memorySize').
+	self assert: (body includesSubstring: 'pharo_image_')
+	] ensure: [ Canopy reset ]
+]
diff --git a/source/Canopy-Metrics-Tests/CanopyMetricsVisitorTest.class.st b/source/Canopy-Metrics-Tests/CanopyMetricsVisitorTest.class.st
index 2704a1e..f3672dd 100644
--- a/source/Canopy-Metrics-Tests/CanopyMetricsVisitorTest.class.st
+++ b/source/Canopy-Metrics-Tests/CanopyMetricsVisitorTest.class.st
@@ -34,8 +34,8 @@ CanopyMetricsVisitorTest >> testExternalObjectMetricsHaveDistinctDescriptions [
 	| metrics tableSize objects |
 	[ ExternalSemaphoreTable canopyRegister.
 	metrics := Canopy instance.
-	tableSize := (metrics / #virtualMachine / #externalObjectTableSize) valueHolder.
-	objects := (metrics / #virtualMachine / #externalObjects) valueHolder.
+	tableSize := (metrics / #pharo / #virtualMachine / #externalObjectTableSize) valueHolder.
+	objects := (metrics / #pharo / #virtualMachine / #externalObjects) valueHolder.
 	self deny: tableSize description equals: objects description ]
 		ensure: [ Canopy reset ]
 ]
@@ -44,11 +44,13 @@ CanopyMetricsVisitorTest >> testExternalObjectMetricsHaveDistinctDescriptions [
 CanopyMetricsVisitorTest >> testExternalObjectMetricsLiveUnderTheVirtualMachine [
 	"Parity with what the servers export today: pharo-metrics declares both under #virtualMachine
 	(ExternalSemaphoreTable's pragmas say so), and external semaphores are a VM concept. Canopy
-	registered them under #image, which renamed two series without saying a word."
+	registered them under #image, which renamed two series without saying a word. Both halves of
+	what Pharo says about itself sit under the domain #pharo, which is where the exported name
+	pharo_virtualMachine_externalObjects comes from."
 	[ ExternalSemaphoreTable canopyRegister.
-	self assert: (Canopy instance / #virtualMachine / #externalObjects) notNil.
-	self assert: (Canopy instance / #virtualMachine / #externalObjectTableSize) notNil.
-	self should: [ Canopy instance / #image ] raise: NotFound ]
+	self assert: (Canopy instance / #pharo / #virtualMachine / #externalObjects) notNil.
+	self assert: (Canopy instance / #pharo / #virtualMachine / #externalObjectTableSize) notNil.
+	self should: [ Canopy instance / #pharo / #image ] raise: NotFound ]
 		ensure: [ Canopy reset ]
 ]
 
diff --git a/source/Canopy-Metrics/ExternalSemaphoreTable.extension.st b/source/Canopy-Metrics/ExternalSemaphoreTable.extension.st
index 6a48574..b2c4172 100644
--- a/source/Canopy-Metrics/ExternalSemaphoreTable.extension.st
+++ b/source/Canopy-Metrics/ExternalSemaphoreTable.extension.st
@@ -4,7 +4,7 @@ Extension { #name : 'ExternalSemaphoreTable' }
 ExternalSemaphoreTable class >> canopyRegister [
 	"External semaphores are a virtual machine concept, and pharo-metrics exports them under
 	#virtualMachine. Registering them under #image renamed two series without saying so."
-	^ (Canopy /+ #virtualMachine) merge: (CanopyMappingBuilder new object: self; map: CanopyBranchNode new; build)
+	^ (Canopy /+ #pharo /+ #virtualMachine) merge: (CanopyMappingBuilder new object: self; map: CanopyBranchNode new; build)
 ]
 
 { #category : '*Canopy-Metrics' }
diff --git a/source/Canopy-Metrics/File.extension.st b/source/Canopy-Metrics/File.extension.st
index d80fe80..02f8197 100644
--- a/source/Canopy-Metrics/File.extension.st
+++ b/source/Canopy-Metrics/File.extension.st
@@ -2,7 +2,7 @@ Extension { #name : 'File' }
 
 { #category : '*Canopy-Metrics' }
 File class >> canopyRegister [
-	^ (Canopy /+ #image) merge: (CanopyMappingBuilder new object: self; map: CanopyBranchNode new; build)
+	^ (Canopy /+ #pharo /+ #image) merge: (CanopyMappingBuilder new object: self; map: CanopyBranchNode new; build)
 ]
 
 { #category : '*Canopy-Metrics' }
diff --git a/source/Canopy-Metrics/Process.extension.st b/source/Canopy-Metrics/Process.extension.st
index ca3e0c1..0272283 100644
--- a/source/Canopy-Metrics/Process.extension.st
+++ b/source/Canopy-Metrics/Process.extension.st
@@ -11,7 +11,7 @@ Process class >> activeProcessListCanopy [
 
 { #category : '*Canopy-Metrics' }
 Process class >> canopyRegister [
-	^ (Canopy /+ #image) merge: (CanopyMappingBuilder new object: self; map: CanopyBranchNode new; build)
+	^ (Canopy /+ #pharo /+ #image) merge: (CanopyMappingBuilder new object: self; map: CanopyBranchNode new; build)
 ]
 
 { #category : '*Canopy-Metrics' }
diff --git a/source/Canopy-Metrics/SmalltalkImage.extension.st b/source/Canopy-Metrics/SmalltalkImage.extension.st
index 651620e..8f0f042 100644
--- a/source/Canopy-Metrics/SmalltalkImage.extension.st
+++ b/source/Canopy-Metrics/SmalltalkImage.extension.st
@@ -2,5 +2,5 @@ Extension { #name : 'SmalltalkImage' }
 
 { #category : '*Canopy-Metrics' }
 SmalltalkImage class >> canopyRegister [
-	^ (Canopy /+ #image) merge: (CanopyMappingBuilder new object: Smalltalk; map: CanopyBranchNode new; build)
+	^ (Canopy /+ #pharo /+ #image) merge: (CanopyMappingBuilder new object: Smalltalk; map: CanopyBranchNode new; build)
 ]
diff --git a/source/Canopy-Metrics/VirtualMachine.extension.st b/source/Canopy-Metrics/VirtualMachine.extension.st
index 6dcb2b3..93bffa9 100644
--- a/source/Canopy-Metrics/VirtualMachine.extension.st
+++ b/source/Canopy-Metrics/VirtualMachine.extension.st
@@ -2,7 +2,7 @@ Extension { #name : 'VirtualMachine' }
 
 { #category : '*Canopy-Metrics' }
 VirtualMachine class >> canopyRegister [
-	^ Canopy registerDomainNamed: #virtualMachine with: (CanopyMappingBuilder new object: Smalltalk vm; map: CanopyBranchNode new; build)
+	^ (Canopy /+ #pharo /+ #virtualMachine) merge: (CanopyMappingBuilder new object: Smalltalk vm; map: CanopyBranchNode new; build)
 ]
 
 { #category : '*Canopy-Metrics' }