diff --git a/.changeset/generated-stable-branch.md b/.changeset/generated-stable-branch.md
new file mode 100644
index 00000000..d80729be
--- /dev/null
+++ b/.changeset/generated-stable-branch.md
@@ -0,0 +1,5 @@
+---
+"@effect/tsgo": patch
+---
+
+Add automation that publishes a generated `generated/stable` branch pinned to the TypeScript RC `typescript-go` commit and runs CI on that branch.
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index aa89c95f..9bd2162c 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -1,89 +1,92 @@
-name: CI
-
-on:
-  push:
-    branches: [main]
-  pull_request:
-    branches: [main]
-
-concurrency:
-  group: ci-${{ github.workflow }}-${{ github.ref }}
-  cancel-in-progress: true
-
-jobs:
-  flake:
-    name: Flake (${{ matrix.os }})
-    runs-on: ${{ matrix.os }}
-    timeout-minutes: 30
-    strategy:
-      fail-fast: false
-      matrix:
-        os:
-          - ubuntu-latest
-          - ubuntu-24.04-arm
-          - macos-latest
-
-    steps:
-      - name: Checkout
-        uses: actions/checkout@v4
-        with:
-          submodules: recursive
-
-      - name: Install Nix
-        uses: DeterminateSystems/determinate-nix-action@v3
-
-      - name: Setup Nix cache
-        uses: DeterminateSystems/flakehub-cache-action@main
-
-      - name: Build flake package
-        run: nix build .#effect-tsgo --no-write-lock-file
-
-  test:
-    name: Test
-    runs-on: ${{ matrix.os }}
-    timeout-minutes: 30
-    strategy:
-      matrix:
-        os: [ubuntu-latest]
-
-    steps:
-      - name: Checkout
-        uses: actions/checkout@v4
-        with:
-          submodules: recursive
-
-      - name: Setup Go
-        uses: actions/setup-go@v5
-        with:
-          go-version: "1.26"
-          cache: false
-
-      - name: Cache Go build
-        uses: actions/cache@v4
-        with:
-          path: |
-            ~/.cache/go-build
-            ~/go/pkg/mod
-          key: go-build-ci-${{ runner.os }}-${{ hashFiles('**/go.sum') }}
-          restore-keys: |
-            go-build-ci-${{ runner.os }}-
-
-      - name: Setup Node
-        uses: actions/setup-node@v4
-        with:
-          node-version: "24"
-
-      - name: Setup pnpm
-        uses: pnpm/action-setup@v4
-        with:
-          version: 9
-
-      - name: Install dependencies
-        run: pnpm install --frozen-lockfile
-
-      - name: Setup repo (submodules, patches, generated files)
-        run: pnpm setup-repo --ci
-
+name: CI
+
+on:
+  push:
+    branches:
+      - main
+      - generated/stable
+  pull_request:
+    branches: [main]
+
+concurrency:
+  group: ci-${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  flake:
+    name: Flake (${{ matrix.os }})
+    if: github.event_name == 'pull_request' || github.ref == 'refs/heads/main'
+    runs-on: ${{ matrix.os }}
+    timeout-minutes: 30
+    strategy:
+      fail-fast: false
+      matrix:
+        os:
+          - ubuntu-latest
+          - ubuntu-24.04-arm
+          - macos-latest
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          submodules: recursive
+
+      - name: Install Nix
+        uses: DeterminateSystems/determinate-nix-action@v3
+
+      - name: Setup Nix cache
+        uses: DeterminateSystems/flakehub-cache-action@main
+
+      - name: Build flake package
+        run: nix build .#effect-tsgo --no-write-lock-file
+
+  test:
+    name: Test
+    runs-on: ${{ matrix.os }}
+    timeout-minutes: 30
+    strategy:
+      matrix:
+        os: [ubuntu-latest]
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          submodules: recursive
+
+      - name: Setup Go
+        uses: actions/setup-go@v5
+        with:
+          go-version: "1.26"
+          cache: false
+
+      - name: Cache Go build
+        uses: actions/cache@v4
+        with:
+          path: |
+            ~/.cache/go-build
+            ~/go/pkg/mod
+          key: go-build-ci-${{ runner.os }}-${{ hashFiles('**/go.sum') }}
+          restore-keys: |
+            go-build-ci-${{ runner.os }}-
+
+      - name: Setup Node
+        uses: actions/setup-node@v4
+        with:
+          node-version: "24"
+
+      - name: Setup pnpm
+        uses: pnpm/action-setup@v4
+        with:
+          version: 9
+
+      - name: Install dependencies
+        run: pnpm install --frozen-lockfile
+
+      - name: Setup repo (submodules, patches, generated files)
+        run: pnpm setup-repo --ci
+
       - name: Check
         run: pnpm check
 
diff --git a/.github/workflows/generate-stable-branch.yml b/.github/workflows/generate-stable-branch.yml
new file mode 100644
index 00000000..dfd6953b
--- /dev/null
+++ b/.github/workflows/generate-stable-branch.yml
@@ -0,0 +1,95 @@
+name: Generate Stable Branch
+
+on:
+  push:
+    branches:
+      - main
+  workflow_dispatch:
+
+concurrency:
+  group: generate-stable-branch
+  cancel-in-progress: true
+
+permissions: {}
+
+jobs:
+  generate:
+    name: Generate generated/stable
+    if: github.repository_owner == 'Effect-TS'
+    runs-on: ubuntu-latest
+    timeout-minutes: 20
+    permissions:
+      contents: write
+
+    steps:
+      - name: Checkout main
+        uses: actions/checkout@v4
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+          ref: main
+          submodules: recursive
+
+      - name: Track TypeScript-Go submodule updates in Git
+        run: git config submodule.typescript-go.ignore dirty
+
+      - name: Setup Go
+        uses: actions/setup-go@v5
+        with:
+          go-version: "1.26"
+          cache: false
+
+      - name: Cache Go build
+        uses: actions/cache@v4
+        with:
+          path: |
+            ~/.cache/go-build
+            ~/go/pkg/mod
+          key: go-build-generate-stable-${{ runner.os }}-${{ hashFiles('**/go.sum') }}
+          restore-keys: |
+            go-build-generate-stable-${{ runner.os }}-
+
+      - name: Setup Node
+        uses: actions/setup-node@v4
+        with:
+          node-version: "24"
+
+      - name: Resolve TypeScript metadata
+        id: typescript
+        env:
+          TYPESCRIPT_SPEC: typescript@rc
+        run: |
+          metadata="$(npm view "${TYPESCRIPT_SPEC}" version gitHead --json)"
+          version="$(node -e 'const m = JSON.parse(process.argv[1]); if (!m.version) process.exit(1); process.stdout.write(m.version)' "$metadata")"
+          git_head="$(node -e 'const m = JSON.parse(process.argv[1]); if (!/^[0-9a-f]{40}$/.test(m.gitHead || "")) process.exit(1); process.stdout.write(m.gitHead)' "$metadata")"
+
+          echo "spec=${TYPESCRIPT_SPEC}" >> "$GITHUB_OUTPUT"
+          echo "version=${version}" >> "$GITHUB_OUTPUT"
+          echo "git_head=${git_head}" >> "$GITHUB_OUTPUT"
+
+      - name: Pin TypeScript-Go to TypeScript commit
+        run: |
+          git -C typescript-go fetch --depth 1 origin "${{ steps.typescript.outputs.git_head }}"
+          git -C typescript-go checkout --detach "${{ steps.typescript.outputs.git_head }}"
+          git -C typescript-go submodule sync --recursive
+          git -C typescript-go submodule update --init --recursive --force
+
+      - name: Regenerate shims and generated files
+        run: bash _tools/setup-repo.sh --ci
+
+      - name: Commit generated stable branch
+        run: |
+          git config user.name "github-actions[bot]"
+          git config user.email "41898282+github-actions[bot]@users.noreply.github.com"
+          git add -A
+
+          if git diff --cached --quiet; then
+            echo "No generated stable changes; publishing main as generated/stable."
+          else
+            git commit -m "chore: generate stable TypeScript-Go branch" \
+              -m "TypeScript package: ${{ steps.typescript.outputs.spec }}" \
+              -m "TypeScript version: ${{ steps.typescript.outputs.version }}" \
+              -m "TypeScript-Go commit: ${{ steps.typescript.outputs.git_head }}"
+          fi
+
+      - name: Push generated stable branch
+        run: git push --force origin HEAD:generated/stable