diff --git a/.chronus/changes/auto-microsoft-python-metadata-2025-4-19-3-4-49.md b/.chronus/changes/auto-microsoft-python-metadata-2025-4-19-3-4-49.md
new file mode 100644
index 00000000000..25ed75be785
--- /dev/null
+++ b/.chronus/changes/auto-microsoft-python-metadata-2025-4-19-3-4-49.md
@@ -0,0 +1,8 @@
+---
+changeKind: feature
+packages:
+  - "@autorest/python"
+  - "@azure-tools/typespec-python"
+---
+
+generate `_metadata.json` to store info from TCGC
diff --git a/packages/autorest.python/package.json b/packages/autorest.python/package.json
index bcc56de3b9a..7a53f7a890c 100644
--- a/packages/autorest.python/package.json
+++ b/packages/autorest.python/package.json
@@ -29,7 +29,7 @@
   },
   "homepage": "https://github.com/Azure/autorest.python/blob/main/README.md",
   "dependencies": {
-    "@typespec/http-client-python": "~0.12.0-dev.3",
+    "@typespec/http-client-python": "~0.12.0-dev.4",
     "@autorest/system-requirements": "~1.0.2",
     "fs-extra": "~11.2.0",
     "tsx": "~4.19.1"
@@ -47,4 +47,4 @@
     "requirements.txt",
     "generator/"
   ]
-}
+}
\ No newline at end of file
diff --git a/packages/typespec-python/package.json b/packages/typespec-python/package.json
index c3d8582cd33..9f545fbb2aa 100644
--- a/packages/typespec-python/package.json
+++ b/packages/typespec-python/package.json
@@ -64,7 +64,7 @@
     "js-yaml": "~4.1.0",
     "semver": "~7.6.2",
     "tsx": "~4.19.1",
-    "@typespec/http-client-python": "~0.12.0-dev.3",
+    "@typespec/http-client-python": "~0.12.0-dev.4",
     "fs-extra": "~11.2.0"
   },
   "devDependencies": {
@@ -99,4 +99,4 @@
     "chalk": "5.3.0",
     "@types/fs-extra": "11.0.4"
   }
-}
+}
\ No newline at end of file
diff --git a/packages/typespec-python/test/azure/generated/azure-core-basic/_metadata.json b/packages/typespec-python/test/azure/generated/azure-core-basic/_metadata.json
new file mode 100644
index 00000000000..d1a7203fa71
--- /dev/null
+++ b/packages/typespec-python/test/azure/generated/azure-core-basic/_metadata.json
@@ -0,0 +1,3 @@
+{
+  "apiVersion": "2022-12-01-preview"
+}
\ No newline at end of file
diff --git a/packages/typespec-python/test/azure/generated/azure-core-lro-rpc/_metadata.json b/packages/typespec-python/test/azure/generated/azure-core-lro-rpc/_metadata.json
new file mode 100644
index 00000000000..d1a7203fa71
--- /dev/null
+++ b/packages/typespec-python/test/azure/generated/azure-core-lro-rpc/_metadata.json
@@ -0,0 +1,3 @@
+{
+  "apiVersion": "2022-12-01-preview"
+}
\ No newline at end of file
diff --git a/packages/typespec-python/test/azure/generated/azure-core-lro-standard/_metadata.json b/packages/typespec-python/test/azure/generated/azure-core-lro-standard/_metadata.json
new file mode 100644
index 00000000000..d1a7203fa71
--- /dev/null
+++ b/packages/typespec-python/test/azure/generated/azure-core-lro-standard/_metadata.json
@@ -0,0 +1,3 @@
+{
+  "apiVersion": "2022-12-01-preview"
+}
\ No newline at end of file
diff --git a/packages/typespec-python/test/azure/generated/azure-core-model/_metadata.json b/packages/typespec-python/test/azure/generated/azure-core-model/_metadata.json
new file mode 100644
index 00000000000..d1a7203fa71
--- /dev/null
+++ b/packages/typespec-python/test/azure/generated/azure-core-model/_metadata.json
@@ -0,0 +1,3 @@
+{
+  "apiVersion": "2022-12-01-preview"
+}
\ No newline at end of file
diff --git a/packages/typespec-python/test/azure/generated/azure-core-page/_metadata.json b/packages/typespec-python/test/azure/generated/azure-core-page/_metadata.json
new file mode 100644
index 00000000000..d1a7203fa71
--- /dev/null
+++ b/packages/typespec-python/test/azure/generated/azure-core-page/_metadata.json
@@ -0,0 +1,3 @@
+{
+  "apiVersion": "2022-12-01-preview"
+}
\ No newline at end of file
diff --git a/packages/typespec-python/test/azure/generated/azure-core-scalar/_metadata.json b/packages/typespec-python/test/azure/generated/azure-core-scalar/_metadata.json
new file mode 100644
index 00000000000..d1a7203fa71
--- /dev/null
+++ b/packages/typespec-python/test/azure/generated/azure-core-scalar/_metadata.json
@@ -0,0 +1,3 @@
+{
+  "apiVersion": "2022-12-01-preview"
+}
\ No newline at end of file
diff --git a/packages/typespec-python/test/azure/generated/azure-core-traits/_metadata.json b/packages/typespec-python/test/azure/generated/azure-core-traits/_metadata.json
new file mode 100644
index 00000000000..d1a7203fa71
--- /dev/null
+++ b/packages/typespec-python/test/azure/generated/azure-core-traits/_metadata.json
@@ -0,0 +1,3 @@
+{
+  "apiVersion": "2022-12-01-preview"
+}
\ No newline at end of file
diff --git a/packages/typespec-python/test/azure/generated/azure-example-basic/_metadata.json b/packages/typespec-python/test/azure/generated/azure-example-basic/_metadata.json
new file mode 100644
index 00000000000..d1a7203fa71
--- /dev/null
+++ b/packages/typespec-python/test/azure/generated/azure-example-basic/_metadata.json
@@ -0,0 +1,3 @@
+{
+  "apiVersion": "2022-12-01-preview"
+}
\ No newline at end of file
diff --git a/packages/typespec-python/test/azure/generated/azure-resource-manager-common-properties/_metadata.json b/packages/typespec-python/test/azure/generated/azure-resource-manager-common-properties/_metadata.json
new file mode 100644
index 00000000000..d557cc647f5
--- /dev/null
+++ b/packages/typespec-python/test/azure/generated/azure-resource-manager-common-properties/_metadata.json
@@ -0,0 +1,3 @@
+{
+  "apiVersion": "2023-12-01-preview"
+}
\ No newline at end of file
diff --git a/packages/typespec-python/test/azure/generated/azure-resource-manager-non-resource/_metadata.json b/packages/typespec-python/test/azure/generated/azure-resource-manager-non-resource/_metadata.json
new file mode 100644
index 00000000000..d557cc647f5
--- /dev/null
+++ b/packages/typespec-python/test/azure/generated/azure-resource-manager-non-resource/_metadata.json
@@ -0,0 +1,3 @@
+{
+  "apiVersion": "2023-12-01-preview"
+}
\ No newline at end of file
diff --git a/packages/typespec-python/test/azure/generated/azure-resource-manager-operation-templates/_metadata.json b/packages/typespec-python/test/azure/generated/azure-resource-manager-operation-templates/_metadata.json
new file mode 100644
index 00000000000..d557cc647f5
--- /dev/null
+++ b/packages/typespec-python/test/azure/generated/azure-resource-manager-operation-templates/_metadata.json
@@ -0,0 +1,3 @@
+{
+  "apiVersion": "2023-12-01-preview"
+}
\ No newline at end of file
diff --git a/packages/typespec-python/test/azure/generated/azure-resource-manager-resources/_metadata.json b/packages/typespec-python/test/azure/generated/azure-resource-manager-resources/_metadata.json
new file mode 100644
index 00000000000..d557cc647f5
--- /dev/null
+++ b/packages/typespec-python/test/azure/generated/azure-resource-manager-resources/_metadata.json
@@ -0,0 +1,3 @@
+{
+  "apiVersion": "2023-12-01-preview"
+}
\ No newline at end of file
diff --git a/packages/typespec-python/test/azure/generated/resiliency-srv-driven1/_metadata.json b/packages/typespec-python/test/azure/generated/resiliency-srv-driven1/_metadata.json
new file mode 100644
index 00000000000..539264d9b9b
--- /dev/null
+++ b/packages/typespec-python/test/azure/generated/resiliency-srv-driven1/_metadata.json
@@ -0,0 +1,3 @@
+{
+  "apiVersion": "v1"
+}
\ No newline at end of file
diff --git a/packages/typespec-python/test/azure/generated/resiliency-srv-driven2/_metadata.json b/packages/typespec-python/test/azure/generated/resiliency-srv-driven2/_metadata.json
new file mode 100644
index 00000000000..6a8f062bd4b
--- /dev/null
+++ b/packages/typespec-python/test/azure/generated/resiliency-srv-driven2/_metadata.json
@@ -0,0 +1,3 @@
+{
+  "apiVersion": "v2"
+}
\ No newline at end of file
diff --git a/packages/typespec-python/test/azure/generated/server-path-multiple/_metadata.json b/packages/typespec-python/test/azure/generated/server-path-multiple/_metadata.json
new file mode 100644
index 00000000000..1c9a8f8f6a9
--- /dev/null
+++ b/packages/typespec-python/test/azure/generated/server-path-multiple/_metadata.json
@@ -0,0 +1,3 @@
+{
+  "apiVersion": "v1.0"
+}
\ No newline at end of file
diff --git a/packages/typespec-python/test/azure/generated/server-versions-versioned/_metadata.json b/packages/typespec-python/test/azure/generated/server-versions-versioned/_metadata.json
new file mode 100644
index 00000000000..d1a7203fa71
--- /dev/null
+++ b/packages/typespec-python/test/azure/generated/server-versions-versioned/_metadata.json
@@ -0,0 +1,3 @@
+{
+  "apiVersion": "2022-12-01-preview"
+}
\ No newline at end of file
diff --git a/packages/typespec-python/test/azure/generated/versioning-added/_metadata.json b/packages/typespec-python/test/azure/generated/versioning-added/_metadata.json
new file mode 100644
index 00000000000..6a8f062bd4b
--- /dev/null
+++ b/packages/typespec-python/test/azure/generated/versioning-added/_metadata.json
@@ -0,0 +1,3 @@
+{
+  "apiVersion": "v2"
+}
\ No newline at end of file
diff --git a/packages/typespec-python/test/azure/generated/versioning-madeoptional/_metadata.json b/packages/typespec-python/test/azure/generated/versioning-madeoptional/_metadata.json
new file mode 100644
index 00000000000..6a8f062bd4b
--- /dev/null
+++ b/packages/typespec-python/test/azure/generated/versioning-madeoptional/_metadata.json
@@ -0,0 +1,3 @@
+{
+  "apiVersion": "v2"
+}
\ No newline at end of file
diff --git a/packages/typespec-python/test/azure/generated/versioning-removed/_metadata.json b/packages/typespec-python/test/azure/generated/versioning-removed/_metadata.json
new file mode 100644
index 00000000000..6a8f062bd4b
--- /dev/null
+++ b/packages/typespec-python/test/azure/generated/versioning-removed/_metadata.json
@@ -0,0 +1,3 @@
+{
+  "apiVersion": "v2"
+}
\ No newline at end of file
diff --git a/packages/typespec-python/test/azure/generated/versioning-renamedfrom/_metadata.json b/packages/typespec-python/test/azure/generated/versioning-renamedfrom/_metadata.json
new file mode 100644
index 00000000000..6a8f062bd4b
--- /dev/null
+++ b/packages/typespec-python/test/azure/generated/versioning-renamedfrom/_metadata.json
@@ -0,0 +1,3 @@
+{
+  "apiVersion": "v2"
+}
\ No newline at end of file
diff --git a/packages/typespec-python/test/azure/generated/versioning-returntypechangedfrom/_metadata.json b/packages/typespec-python/test/azure/generated/versioning-returntypechangedfrom/_metadata.json
new file mode 100644
index 00000000000..6a8f062bd4b
--- /dev/null
+++ b/packages/typespec-python/test/azure/generated/versioning-returntypechangedfrom/_metadata.json
@@ -0,0 +1,3 @@
+{
+  "apiVersion": "v2"
+}
\ No newline at end of file
diff --git a/packages/typespec-python/test/azure/generated/versioning-typechangedfrom/_metadata.json b/packages/typespec-python/test/azure/generated/versioning-typechangedfrom/_metadata.json
new file mode 100644
index 00000000000..6a8f062bd4b
--- /dev/null
+++ b/packages/typespec-python/test/azure/generated/versioning-typechangedfrom/_metadata.json
@@ -0,0 +1,3 @@
+{
+  "apiVersion": "v2"
+}
\ No newline at end of file
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index f18fdcb6d41..2cf7dfcbc1d 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -57,8 +57,8 @@ importers:
         specifier: ~1.0.2
         version: 1.0.2
       '@typespec/http-client-python':
-        specifier: ~0.12.0-dev.3
-        version: 0.12.0-dev.3(3wtk2dpxeawdlyhxiqauzpqcq4)
+        specifier: ~0.12.0-dev.4
+        version: 0.12.0-dev.4(3wtk2dpxeawdlyhxiqauzpqcq4)
       fs-extra:
         specifier: ~11.2.0
         version: 11.2.0
@@ -79,8 +79,8 @@ importers:
   packages/typespec-python:
     dependencies:
       '@typespec/http-client-python':
-        specifier: ~0.12.0-dev.3
-        version: 0.12.0-dev.3(3wtk2dpxeawdlyhxiqauzpqcq4)
+        specifier: ~0.12.0-dev.4
+        version: 0.12.0-dev.4(3wtk2dpxeawdlyhxiqauzpqcq4)
       fs-extra:
         specifier: ~11.2.0
         version: 11.2.0
@@ -1539,8 +1539,8 @@ packages:
     peerDependencies:
       '@typespec/compiler': ^1.0.0
 
-  '@typespec/http-client-python@0.12.0-dev.3':
-    resolution: {integrity: sha512-NEm9JC78mczkFlP3tM2UY8/PN9TUJ7uyJPlpYsPURupA5Ge38dVmPRs5gdpj9tlbHKEvnjJ0jIy1rdIUb7DJ9A==}
+  '@typespec/http-client-python@0.12.0-dev.4':
+    resolution: {integrity: sha512-B4a6lU7IiYXHEUTGjcCJXOc8IBb3ev1b25V9H7OOcbTOM1nFuwwtrFwkQbA4rrP42Othgn3UHxcefKiWon8/Aw==}
     engines: {node: '>=20.0.0'}
     peerDependencies:
       '@azure-tools/typespec-autorest': '>=0.56.0 <1.0.0'
@@ -5955,7 +5955,7 @@ snapshots:
     dependencies:
       '@typespec/compiler': 1.0.0(@types/node@22.13.17)
 
-  '@typespec/http-client-python@0.12.0-dev.3(3wtk2dpxeawdlyhxiqauzpqcq4)':
+  '@typespec/http-client-python@0.12.0-dev.4(3wtk2dpxeawdlyhxiqauzpqcq4)':
     dependencies:
       '@azure-tools/typespec-autorest': 0.56.0(rnyagkipe6ane6slysupm3neby)
       '@azure-tools/typespec-azure-core': 0.56.0(@typespec/compiler@1.0.0(@types/node@22.13.17))(@typespec/http@1.0.0(@typespec/compiler@1.0.0(@types/node@22.13.17))(@typespec/streams@0.70.0(@typespec/compiler@1.0.0(@types/node@22.13.17))))(@typespec/rest@0.70.0(@typespec/compiler@1.0.0(@types/node@22.13.17))(@typespec/http@1.0.0(@typespec/compiler@1.0.0(@types/node@22.13.17))(@typespec/streams@0.70.0(@typespec/compiler@1.0.0(@types/node@22.13.17)))))