diff --git a/.github/workflows/release-npm.yml b/.github/workflows/release-npm.yml
new file mode 100644
index 0000000..f784cb8
--- /dev/null
+++ b/.github/workflows/release-npm.yml
@@ -0,0 +1,64 @@
+name: Release npm
+
+# Publish @hashlock-tech/sdk. Trigger: a package-scoped tag, e.g. `typescript-v1.0.0`.
+#   git tag typescript-v1.0.0 && git push origin typescript-v1.0.0
+# Build runs WITHOUT OIDC; only the minimal `publish` job holds `id-token: write` and never runs
+# untrusted install/build scripts. Uses OIDC Trusted Publishing (no long-lived token in the repo) —
+# configure the npm trusted publisher once against THIS workflow file (release-npm.yml).
+on:
+  push:
+    tags: ['typescript-v*']
+
+permissions:
+  contents: read
+
+jobs:
+  build:
+    name: Build (no OIDC)
+    runs-on: ubuntu-latest
+    defaults:
+      run:
+        working-directory: typescript
+    steps:
+      - uses: actions/checkout@11d5960a326750d5838078e36cf38b85af677262 # v4
+        with:
+          persist-credentials: false
+      - uses: actions/setup-node@49933ea5288caeca8642d1e84afbd3f7d6820020 # v4
+        with:
+          node-version: 22
+      - name: Verify tag matches package.json version
+        run: |
+          TAG="${GITHUB_REF_NAME#typescript-v}"
+          PKG="$(node -p "require('./package.json').version")"
+          echo "tag=$TAG package.json=$PKG"
+          [ "$TAG" = "$PKG" ] || { echo "::error::tag $GITHUB_REF_NAME does not match package.json version $PKG"; exit 1; }
+      - run: npm install
+      - run: npm run build
+      - run: npm pack # → typescript/*.tgz (built artifact to publish)
+      - uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02 # v4
+        with:
+          name: npm-package
+          path: typescript/*.tgz
+          if-no-files-found: error
+
+  publish:
+    name: Publish to npm (OIDC)
+    needs: build
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      id-token: write # OIDC → npm trusted publishing + provenance
+    steps:
+      - uses: actions/download-artifact@d3f86a106a0bac45b974a628896c90dbdf5c8093 # v4
+        with:
+          name: npm-package
+      - uses: actions/setup-node@49933ea5288caeca8642d1e84afbd3f7d6820020 # v4
+        with:
+          # Pinned Node whose BUNDLED npm (11.16.0) already satisfies OIDC trusted publishing (>= 11.5.1),
+          # so the privileged job runs no registry-supplied `npm install -g` in the OIDC context.
+          node-version: 24.18.0
+          registry-url: https://registry.npmjs.org
+      # Publish the prebuilt tarball only — the OIDC job runs no untrusted install/build scripts.
+      - run: npm publish *.tgz --provenance --access public
+        # Trusted publisher configured → no NODE_AUTH_TOKEN needed.
+        # Token fallback: set env NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }} and drop --provenance.
diff --git a/.github/workflows/release-pypi.yml b/.github/workflows/release-pypi.yml
new file mode 100644
index 0000000..5b3d63c
--- /dev/null
+++ b/.github/workflows/release-pypi.yml
@@ -0,0 +1,58 @@
+name: Release PyPI
+
+# Publish hashlock-sdk. Trigger: a package-scoped tag, e.g. `python-v1.0.0`.
+#   git tag python-v1.0.0 && git push origin python-v1.0.0
+# Build runs WITHOUT OIDC; only the minimal `publish` job holds `id-token: write` and does nothing but
+# publish the prebuilt distributions. Uses OIDC Trusted Publishing (no long-lived token in the repo) —
+# configure the PyPI trusted publisher once against THIS workflow file (release-pypi.yml).
+on:
+  push:
+    tags: ['python-v*']
+
+permissions:
+  contents: read
+
+jobs:
+  build:
+    name: Build (no OIDC)
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@11d5960a326750d5838078e36cf38b85af677262 # v4
+        with:
+          persist-credentials: false
+      - uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065 # v5
+        with:
+          python-version: '3.11'
+      - name: Verify tag matches pyproject version
+        working-directory: python
+        run: |
+          TAG="${GITHUB_REF_NAME#python-v}"
+          PKG="$(grep -E '^version = ' pyproject.toml | head -1 | cut -d'"' -f2)"
+          echo "tag=$TAG pyproject=$PKG"
+          [ "$TAG" = "$PKG" ] || { echo "::error::tag $GITHUB_REF_NAME does not match pyproject version $PKG"; exit 1; }
+      - run: pip install build
+      - run: python -m build
+        working-directory: python
+      - uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02 # v4
+        with:
+          name: pypi-dist
+          path: python/dist/*
+          if-no-files-found: error
+
+  publish:
+    name: Publish to PyPI (OIDC)
+    needs: build
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      id-token: write # OIDC → PyPI trusted publishing
+    steps:
+      - uses: actions/download-artifact@d3f86a106a0bac45b974a628896c90dbdf5c8093 # v4
+        with:
+          name: pypi-dist
+          path: dist
+      - uses: pypa/gh-action-pypi-publish@ba38be9e461d3875417946c167d0b5f3d385a247 # release/v1
+        with:
+          packages-dir: dist
+        # Trusted publisher configured → no token needed.
+        # Token fallback: add `password: ${{ secrets.PYPI_TOKEN }}`.