diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 0260dd72c..2b00dac13 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -14,6 +14,9 @@ on:
       - 'stl-preview-head/**'
       - 'stl-preview-base/**'
 
+permissions:
+  contents: read
+
 jobs:
   lint:
     timeout-minutes: 15
@@ -23,6 +26,8 @@ jobs:
 
     steps:
       - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
+        with:
+          persist-credentials: false
 
       - name: Set up Java
         uses: actions/setup-java@be666c2fcd27ec809703dec50e508c2fdc7f6654 # v5
@@ -42,14 +47,54 @@ jobs:
   build:
     timeout-minutes: 30
     name: build
+    runs-on: ${{ github.repository == 'stainless-sdks/openai-java' && 'depot-ubuntu-24.04' || 'ubuntu-latest' }}
+    if: |-
+      (github.event_name == 'push' || github.event.pull_request.head.repo.fork) &&
+      (github.event_name != 'push' || github.event.head_commit.message != 'codegen metadata') &&
+      !(github.repository == 'stainless-sdks/openai-java' &&
+        github.event_name == 'push' &&
+        !startsWith(github.ref, 'refs/heads/stl/'))
+
+    steps:
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
+        with:
+          persist-credentials: false
+
+      - name: Set up Java
+        uses: actions/setup-java@be666c2fcd27ec809703dec50e508c2fdc7f6654 # v5
+        with:
+          distribution: temurin
+          java-version: |
+            8
+            21
+          cache: gradle
+
+      - name: Set up Gradle
+        uses: gradle/actions/setup-gradle@0b6dd653ba04f4f93bf581ec31e66cbd7dcb644d # v4
+
+      - name: Build SDK
+        # disable gradle daemon in CI because it is flakey
+        env:
+          GRADLE_OPTS: "-Dkotlin.compiler.execution.strategy=in-process"
+        run: ./scripts/build
+
+  upload-maven-artifacts:
+    timeout-minutes: 30
+    name: build-and-upload-maven-artifacts
     permissions:
       contents: read
       id-token: write
-    runs-on: ${{ github.repository == 'stainless-sdks/openai-java' && 'depot-ubuntu-24.04' || 'ubuntu-latest' }}
-    if: (github.event_name == 'push' || github.event.pull_request.head.repo.fork) && (github.event_name != 'push' || github.event.head_commit.message != 'codegen metadata')
+    runs-on: depot-ubuntu-24.04
+    if: |-
+      github.repository == 'stainless-sdks/openai-java' &&
+      github.event_name == 'push' &&
+      github.event.head_commit.message != 'codegen metadata' &&
+      !startsWith(github.ref, 'refs/heads/stl/')
 
     steps:
       - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
+        with:
+          persist-credentials: false
 
       - name: Set up Java
         uses: actions/setup-java@be666c2fcd27ec809703dec50e508c2fdc7f6654 # v5
@@ -69,10 +114,7 @@ jobs:
           GRADLE_OPTS: "-Dkotlin.compiler.execution.strategy=in-process"
         run: ./scripts/build
 
-      - name: Build and upload Maven artifacts
-        if: |-
-          github.repository == 'stainless-sdks/openai-java' &&
-          !startsWith(github.ref, 'refs/heads/stl/')
+      - name: Upload Maven artifacts
         env:
           URL: https://pkg.stainless.com/s
           SHA: ${{ github.sha }}
@@ -121,6 +163,8 @@ jobs:
     if: github.event_name == 'push' || github.event.pull_request.head.repo.fork
     steps:
       - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
+        with:
+          persist-credentials: false
 
       - name: Set up Java
         uses: actions/setup-java@be666c2fcd27ec809703dec50e508c2fdc7f6654 # v5
@@ -141,10 +185,12 @@ jobs:
     name: examples
     environment: CI
     runs-on: ${{ github.repository == 'stainless-sdks/openai-java' && 'depot-ubuntu-24.04' || 'ubuntu-latest' }}
-    if: github.repository == 'openai/openai-java' && (github.event_name == 'push' || github.event.pull_request.head.repo.fork) && (github.event_name != 'push' || github.event.head_commit.message != 'codegen metadata')
+    if: github.repository == 'openai/openai-java' && github.event_name == 'push' && github.ref == 'refs/heads/main' && github.event.head_commit.message != 'codegen metadata'
 
     steps:
       - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
+        with:
+          persist-credentials: false
 
       - name: Set up Java
         uses: actions/setup-java@be666c2fcd27ec809703dec50e508c2fdc7f6654 # v5
diff --git a/.github/workflows/create-releases.yml b/.github/workflows/create-releases.yml
index 22de02113..27852eeac 100644
--- a/.github/workflows/create-releases.yml
+++ b/.github/workflows/create-releases.yml
@@ -6,6 +6,9 @@ on:
     branches:
       - main
 
+permissions:
+  contents: read
+
 jobs:
   release:
     name: release
@@ -17,6 +20,8 @@ jobs:
 
     steps:
       - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
+        with:
+          persist-credentials: false
 
       - uses: stainless-api/trigger-release-please@bb6677c5a04578eec1ccfd9e1913b5b78ed64c61 # v1.4.0
         id: release
@@ -33,6 +38,8 @@ jobs:
 
     steps:
       - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
+        with:
+          persist-credentials: false
 
       - name: Set up Java
         uses: actions/setup-java@be666c2fcd27ec809703dec50e508c2fdc7f6654 # v5
diff --git a/.github/workflows/detect-breaking-changes.yml b/.github/workflows/detect-breaking-changes.yml
index e20819b1b..94819c587 100644
--- a/.github/workflows/detect-breaking-changes.yml
+++ b/.github/workflows/detect-breaking-changes.yml
@@ -5,6 +5,9 @@ on:
       - main
       - next
 
+permissions:
+  contents: read
+
 jobs:
   detect_breaking_changes:
     runs-on: 'ubuntu-latest'
@@ -19,6 +22,7 @@ jobs:
         with:
           # Ensure we can check out the pull request base in the script below.
           fetch-depth: ${{ env.FETCH_DEPTH }}
+          persist-credentials: false
 
       - name: Set up Java
         uses: actions/setup-java@be666c2fcd27ec809703dec50e508c2fdc7f6654 # v5
@@ -36,4 +40,4 @@ jobs:
           # Try to check out previous versions of the breaking change detection script. This ensures that
           # we still detect breaking changes when entire files and their tests are removed.
           git checkout "${{ github.event.pull_request.base.sha }}" -- ./scripts/detect-breaking-changes 2>/dev/null || true
-          ./scripts/detect-breaking-changes ${{ github.event.pull_request.base.sha }}
\ No newline at end of file
+          ./scripts/detect-breaking-changes ${{ github.event.pull_request.base.sha }}
diff --git a/.github/workflows/publish-sonatype.yml b/.github/workflows/publish-sonatype.yml
index 92f560bde..c99d8eccd 100644
--- a/.github/workflows/publish-sonatype.yml
+++ b/.github/workflows/publish-sonatype.yml
@@ -4,6 +4,9 @@ name: Publish Sonatype
 on:
   workflow_dispatch:
 
+permissions:
+  contents: read
+
 jobs:
   publish:
     name: publish
@@ -12,6 +15,8 @@ jobs:
 
     steps:
       - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
+        with:
+          persist-credentials: false
 
       - name: Set up Java
         uses: actions/setup-java@be666c2fcd27ec809703dec50e508c2fdc7f6654 # v5