diff --git a/.changeset/harmonize-phantom-t-getter.md b/.changeset/harmonize-phantom-t-getter.md
index 970d4f18b2..99995cd8e2 100644
--- a/.changeset/harmonize-phantom-t-getter.md
+++ b/.changeset/harmonize-phantom-t-getter.md
@@ -2,4 +2,4 @@
 '@backstage/backend-plugin-api': patch
 ---
 
-Harmonized the phantom `.T` getter on `ExtensionPoint` to consistently return `null` instead of throwing.
+Harmonized the phantom `.T` getter behavior on `ExtensionPoint` and `ServiceRef` to consistently return `null` instead of throwing, and added `toJSON()` parity for `ExtensionPoint`.
diff --git a/packages/backend-plugin-api/src/services/system/types.ts b/packages/backend-plugin-api/src/services/system/types.ts
index 925156d3ae..a97d577ec4 100644
--- a/packages/backend-plugin-api/src/services/system/types.ts
+++ b/packages/backend-plugin-api/src/services/system/types.ts
@@ -50,7 +50,7 @@ export type ServiceRef<
 
   /**
    * Utility for getting the type of the service, using `typeof serviceRef.T`.
-   * Attempting to actually read this value will result in an exception.
+   * Reading this value will always return `null`. It is only intended for use with `typeof serviceRef.T`.
    */
   T: TService;
 
diff --git a/packages/backend-plugin-api/src/wiring/types.ts b/packages/backend-plugin-api/src/wiring/types.ts
index 9397cf597b..8d75c8923f 100644
--- a/packages/backend-plugin-api/src/wiring/types.ts
+++ b/packages/backend-plugin-api/src/wiring/types.ts
@@ -27,7 +27,7 @@ export type ExtensionPoint<T> = {
 
   /**
    * Utility for getting the type of the extension point, using `typeof extensionPoint.T`.
-   * Attempting to actually read this value will result in an exception.
+   * Reading this value will always return `null`. It is only intended for use with `typeof extensionPoint.T`.
    */
   T: T;