diff --git a/.github/workflows/release-typescript-sdk.yml b/.github/workflows/release-typescript-sdk.yml
index e3813e8..5376bbc 100644
--- a/.github/workflows/release-typescript-sdk.yml
+++ b/.github/workflows/release-typescript-sdk.yml
@@ -31,6 +31,7 @@ jobs:
     outputs:
       sdk_version: ${{ steps.sdk-version.outputs.value }}
       publish_release: ${{ steps.release-mode.outputs.value }}
+      sdk_already_published: ${{ steps.sdk-presence.outputs.value }}
     steps:
       - name: Checkout
         uses: actions/checkout@v4
@@ -93,10 +94,31 @@ jobs:
             exit 1
           fi
 
+      - name: Check whether SDK package version already exists on npm
+        id: sdk-presence
+        shell: bash
+        run: |
+          set -euo pipefail
+          if [[ "${{ steps.release-mode.outputs.value }}" != "true" ]]; then
+            echo "value=false" >> "${GITHUB_OUTPUT}"
+            exit 0
+          fi
+
+          package_name="$(node -p "require('./${SDK_DIRECTORY}/package.json').name")"
+          package_version="${{ steps.sdk-version.outputs.value }}"
+          if pnpm view "${package_name}@${package_version}" version >/dev/null 2>&1; then
+            echo "value=true" >> "${GITHUB_OUTPUT}"
+            echo ">>> ${package_name}@${package_version} already exists on npm; SDK verification/publish steps will skip where possible."
+          else
+            echo "value=false" >> "${GITHUB_OUTPUT}"
+          fi
+
       - name: Install workspace dependencies
+        if: steps.sdk-presence.outputs.value != 'true'
         run: pnpm install --frozen-lockfile
 
       - name: Run TypeScript SDK checks
+        if: steps.sdk-presence.outputs.value != 'true'
         run: pnpm --dir "${SDK_DIRECTORY}" run check
 
   publish-native:
@@ -130,11 +152,6 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v4
 
-      - name: Setup Rust CI toolchain and tools
-        uses: ./.github/actions/rust-ci-setup
-        with:
-          cargo-tools: cargo-make,cargo-nextest
-
       - name: Setup pnpm
         uses: pnpm/action-setup@v4
         with:
@@ -148,11 +165,33 @@ jobs:
           cache-dependency-path: pnpm-lock.yaml
           registry-url: https://registry.npmjs.org
 
+      - name: Check whether native runtime package version already exists on npm
+        id: native-package-presence
+        if: needs.verify.outputs.publish_release == 'true'
+        shell: bash
+        run: |
+          set -euo pipefail
+          package_name="${{ matrix.package_name }}"
+          package_version="${{ needs.verify.outputs.sdk_version }}"
+          if pnpm view "${package_name}@${package_version}" version >/dev/null 2>&1; then
+            echo "value=true" >> "${GITHUB_OUTPUT}"
+            echo ">>> ${package_name}@${package_version} already exists on npm; skipping native runtime build/publish."
+          else
+            echo "value=false" >> "${GITHUB_OUTPUT}"
+          fi
+
+      - name: Setup Rust CI toolchain and tools
+        if: needs.verify.outputs.publish_release != 'true' || steps.native-package-presence.outputs.value != 'true'
+        uses: ./.github/actions/rust-ci-setup
+        with:
+          cargo-tools: cargo-make,cargo-nextest
+
       - name: Install workspace dependencies
+        if: needs.verify.outputs.publish_release != 'true' || steps.native-package-presence.outputs.value != 'true'
         run: pnpm install --frozen-lockfile
 
       - name: Publish native runtime package
-        if: needs.verify.outputs.publish_release == 'true'
+        if: needs.verify.outputs.publish_release == 'true' && steps.native-package-presence.outputs.value != 'true'
         working-directory: ${{ matrix.package_dir }}
         env:
           NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}
@@ -189,11 +228,27 @@ jobs:
           cache-dependency-path: pnpm-lock.yaml
           registry-url: https://registry.npmjs.org
 
+      - name: Check whether SDK package version already exists on npm
+        id: sdk-package-presence
+        if: needs.verify.outputs.publish_release == 'true'
+        shell: bash
+        run: |
+          set -euo pipefail
+          package_name="$(node -p "require('./${SDK_DIRECTORY}/package.json').name")"
+          package_version="${{ needs.verify.outputs.sdk_version }}"
+          if pnpm view "${package_name}@${package_version}" version >/dev/null 2>&1; then
+            echo "value=true" >> "${GITHUB_OUTPUT}"
+            echo ">>> ${package_name}@${package_version} already exists on npm; skipping SDK install/publish."
+          else
+            echo "value=false" >> "${GITHUB_OUTPUT}"
+          fi
+
       - name: Install workspace dependencies
+        if: needs.verify.outputs.publish_release != 'true' || steps.sdk-package-presence.outputs.value != 'true'
         run: pnpm install --frozen-lockfile
 
       - name: Wait for native packages to index on npm
-        if: needs.verify.outputs.publish_release == 'true'
+        if: needs.verify.outputs.publish_release == 'true' && steps.sdk-package-presence.outputs.value != 'true'
         shell: bash
         run: |
           set -euo pipefail
@@ -206,7 +261,7 @@ jobs:
             local pkg="$1"
             local attempt
             for attempt in $(seq 1 30); do
-              if npm view "${pkg}@${version}" version >/dev/null 2>&1; then
+              if pnpm view "${pkg}@${version}" version >/dev/null 2>&1; then
                 echo ">>> ${pkg}@${version} is visible on npm"
                 return 0
               fi
@@ -237,7 +292,7 @@ jobs:
           fi
 
       - name: Publish TypeScript SDK
-        if: needs.verify.outputs.publish_release == 'true'
+        if: needs.verify.outputs.publish_release == 'true' && steps.sdk-package-presence.outputs.value != 'true'
         working-directory: ${{ env.SDK_DIRECTORY }}
         env:
           NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}
diff --git a/sdks/typescript/README.md b/sdks/typescript/README.md
index 1daaad2..60064a8 100644
--- a/sdks/typescript/README.md
+++ b/sdks/typescript/README.md
@@ -1,6 +1,8 @@
 # `@lythaeon-sof/sdk`
 
-TypeScript SDK for building apps with a typed `App`, `Plugin`, `runtime`, and `derivedState` model.
+TypeScript SDK for building Node.js Solana observer apps on top of SOF.
+
+These apps ingest Solana data from websocket, gRPC, gossip, or direct-shred sources, run typed plugins and derived state, and execute on the packaged SOF runtime host without requiring app authors to touch the Rust code underneath.
 
 ## Tooling
 
diff --git a/sdks/typescript/RELEASING.md b/sdks/typescript/RELEASING.md
index 71b7d6b..487c9e0 100644
--- a/sdks/typescript/RELEASING.md
+++ b/sdks/typescript/RELEASING.md
@@ -21,8 +21,8 @@ Use `ts-sdk-vX.Y.Z` tags for npm releases.
 Examples:
 
 ```sh
-git tag ts-sdk-v0.1.1
-git push origin ts-sdk-v0.1.1
+git tag ts-sdk-v0.1.2
+git push origin ts-sdk-v0.1.2
 ```
 
 The release workflow rejects tags that do not match `sdks/typescript/package.json`.
diff --git a/sdks/typescript/native/darwin-arm64/package.json b/sdks/typescript/native/darwin-arm64/package.json
index 95a7dab..b8cf074 100644
--- a/sdks/typescript/native/darwin-arm64/package.json
+++ b/sdks/typescript/native/darwin-arm64/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@lythaeon-sof/sdk-native-darwin-arm64",
-  "version": "0.1.1",
+  "version": "0.1.2",
   "license": "MIT OR Apache-2.0",
   "description": "Native SOF runtime host for @lythaeon-sof/sdk on macOS arm64",
   "repository": {
diff --git a/sdks/typescript/native/darwin-x64/package.json b/sdks/typescript/native/darwin-x64/package.json
index 3c0ac02..3f3e24e 100644
--- a/sdks/typescript/native/darwin-x64/package.json
+++ b/sdks/typescript/native/darwin-x64/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@lythaeon-sof/sdk-native-darwin-x64",
-  "version": "0.1.1",
+  "version": "0.1.2",
   "license": "MIT OR Apache-2.0",
   "description": "Native SOF runtime host for @lythaeon-sof/sdk on macOS x64",
   "repository": {
diff --git a/sdks/typescript/native/linux-arm64/package.json b/sdks/typescript/native/linux-arm64/package.json
index ac63cd1..294573d 100644
--- a/sdks/typescript/native/linux-arm64/package.json
+++ b/sdks/typescript/native/linux-arm64/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@lythaeon-sof/sdk-native-linux-arm64",
-  "version": "0.1.1",
+  "version": "0.1.2",
   "license": "MIT OR Apache-2.0",
   "description": "Native SOF runtime host for @lythaeon-sof/sdk on Linux arm64",
   "repository": {
diff --git a/sdks/typescript/native/linux-x64/package.json b/sdks/typescript/native/linux-x64/package.json
index 4e6f70a..f6d3fbd 100644
--- a/sdks/typescript/native/linux-x64/package.json
+++ b/sdks/typescript/native/linux-x64/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@lythaeon-sof/sdk-native-linux-x64",
-  "version": "0.1.1",
+  "version": "0.1.2",
   "license": "MIT OR Apache-2.0",
   "description": "Native SOF runtime host for @lythaeon-sof/sdk on Linux x64",
   "repository": {
diff --git a/sdks/typescript/native/win32-arm64/package.json b/sdks/typescript/native/win32-arm64/package.json
index e62352a..bd1cb81 100644
--- a/sdks/typescript/native/win32-arm64/package.json
+++ b/sdks/typescript/native/win32-arm64/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@lythaeon-sof/sdk-native-win32-arm64",
-  "version": "0.1.1",
+  "version": "0.1.2",
   "license": "MIT OR Apache-2.0",
   "description": "Native SOF runtime host for @lythaeon-sof/sdk on Windows arm64",
   "repository": {
diff --git a/sdks/typescript/native/win32-x64/package.json b/sdks/typescript/native/win32-x64/package.json
index baaa4c2..75baec7 100644
--- a/sdks/typescript/native/win32-x64/package.json
+++ b/sdks/typescript/native/win32-x64/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@lythaeon-sof/sdk-native-win32-x64",
-  "version": "0.1.1",
+  "version": "0.1.2",
   "license": "MIT OR Apache-2.0",
   "description": "Native SOF runtime host for @lythaeon-sof/sdk on Windows x64",
   "repository": {
diff --git a/sdks/typescript/package.json b/sdks/typescript/package.json
index cd40684..6b0bccf 100644
--- a/sdks/typescript/package.json
+++ b/sdks/typescript/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@lythaeon-sof/sdk",
-  "version": "0.1.1",
-  "description": "TypeScript App SDK",
+  "version": "0.1.2",
+  "description": "TypeScript SDK for Node.js Solana observer apps on SOF",
   "license": "MIT OR Apache-2.0",
   "sideEffects": false,
   "packageManager": "pnpm@10.28.2",