diff --git a/npm/npm-get-next-branched-version/action.yaml b/npm/npm-get-next-branched-version/action.yaml
new file mode 100644
index 0000000..8579953
--- /dev/null
+++ b/npm/npm-get-next-branched-version/action.yaml
@@ -0,0 +1,59 @@
+name: npm-get-next-branched-version
+description: "Get the next version of an NPM package based on the current branch status."
+inputs:
+  name:
+    description: "The name of the package."
+    required: true
+  defaultVersion:
+    description: "Default version to use."
+    required: true
+    default: "1.0.0"
+  registry:
+    description: "NPM registry URL."
+    required: false
+    default: "https://npm.pkg.github.com"
+  authToken:
+    description: "Authentication token for the registry."
+    required: true
+  prerelease:
+    description: "Query prerelease packages. Values: true, false."
+    required: false
+    default: "${{ github.event_name == 'pull_request' }}"
+outputs:
+  latestVersion:
+    description: "The current latest version for the package."
+    value: ${{ steps.npm.outputs.version || steps.npmFallback.outputs.version }}
+  nextVersion:
+    description: "The next version for the package."
+    value: ${{ steps.version.outputs.nextVersion }}
+runs:
+  using: "composite"
+  steps:
+  - name: "Get the base version for the package."
+    uses: act/common/utils/version-increment-branch@master
+    id: base
+    with:
+      version: ${{ inputs.defaultVersion }}
+  - uses: act/common/npm/npm-query-versions-latest@master
+    id: npm
+    with:
+      name: ${{ inputs.name }}
+      registry: ${{ inputs.registry }}
+      authToken: ${{ inputs.authToken }}
+      filter: ^${{ steps.base.outputs.baseVersion }}
+      prerelease: ${{ inputs.prerelease }}
+  - name: "If no version is found, get the latest version for the package if we didn't already look for it."
+    uses: act/common/npm/npm-query-versions-latest@master
+    id: npmFallback
+    if: ${{ steps.npm.outputs.version == '' && inputs.prerelease != 'false' }}
+    with:
+      name: ${{ inputs.name }}
+      registry: ${{ inputs.registry }}
+      authToken: ${{ inputs.authToken }}
+      filter: ^${{ steps.base.outputs.majorMinorPatchVersion }}
+      prerelease: "false"
+  - name: "Get the next version for the package."
+    uses: act/common/utils/version-increment-branch@master
+    id: version
+    with:
+      version: ${{ steps.npm.outputs.version || steps.npmFallback.outputs.version || inputs.defaultVersion }}
diff --git a/npm/npm-install/action.yaml b/npm/npm-install/action.yaml
new file mode 100644
index 0000000..eb3455b
--- /dev/null
+++ b/npm/npm-install/action.yaml
@@ -0,0 +1,36 @@
+name: npm-install
+description: "Download the desired NPM package tarball."
+inputs:
+  name:
+    description: "Name of the package."
+    required: true
+  version:
+    description: "Version of the package."
+    required: false
+    default: ""
+  prerelease:
+    description: "Install prerelease packages. Values: true, false."
+    required: false
+    default: "false"
+  outputDirectory:
+    description: "Directory for the output file."
+    required: true
+    default: "."
+  registry:
+    description: "NPM registry URL."
+    required: false
+    default: "https://npm.pkg.github.com"
+  authToken:
+    description: "Authentication token for the registry."
+    required: true
+outputs:
+  tgz:
+    description: "The path to the .tgz file."
+    value: ${{ steps.download.outputs.tgz }}
+runs:
+  using: "composite"
+  steps:
+  - name: "Download the package."
+    id: download
+    run: bash ${{ github.action_path }}/download_package.sh "${{ inputs.name }}" "${{ inputs.version }}" "${{ inputs.registry }}" "${{ inputs.authToken }}" "${{ inputs.outputDirectory }}"
+    shell: bash
diff --git a/npm/npm-install/download_package.sh b/npm/npm-install/download_package.sh
new file mode 100644
index 0000000..a98862a
--- /dev/null
+++ b/npm/npm-install/download_package.sh
@@ -0,0 +1,65 @@
+#!/bin/bash
+set -e
+
+PACKAGE_NAME="$1"
+VERSION="$2"
+REGISTRY="$3"
+AUTH_TOKEN="$4"
+OUTPUT_DIR="${5:-.}"
+
+if [[ ! -f "$GITHUB_OUTPUT" ]]; then
+    GITHUB_OUTPUT="/dev/fd/1"
+fi
+
+# Ensure version is provided
+if [[ -z "$VERSION" ]]; then
+    echo "Error: VERSION is required"
+    exit 1
+fi
+
+# Download the tarball
+TARBALL_URL="$REGISTRY/$PACKAGE_NAME/-/$PACKAGE_NAME-$VERSION.tgz"
+TGZ_NAME="$PACKAGE_NAME-$VERSION.tgz"
+mkdir -p "$OUTPUT_DIR"
+TGZ_PATH="$OUTPUT_DIR/$TGZ_NAME"
+
+echo "Downloading $TARBALL_URL"
+CURL_HEADERS=()
+if [[ -n "$AUTH_TOKEN" ]]; then
+    CURL_HEADERS+=(-H "Authorization: Bearer $AUTH_TOKEN")
+fi
+
+# Download and capture HTTP status separately
+# Temporarily disable 'exit on error' to capture status
+set +e
+HTTP_CODE=$(curl -sL -w "%{http_code}" -o "$TGZ_PATH" "${CURL_HEADERS[@]}" "$TARBALL_URL")
+CURL_EXIT=$?
+set -e
+
+# Check if curl command itself failed (network issues, DNS, etc)
+if [[ $CURL_EXIT -ne 0 ]]; then
+    echo "Error: curl failed with exit code $CURL_EXIT (network error or invalid URL)"
+    rm -f "$TGZ_PATH"
+    exit 1
+fi
+
+# Check HTTP status code
+if [[ "$HTTP_CODE" != "200" ]]; then
+    echo "Error: Failed to download package (HTTP $HTTP_CODE)"
+    if [[ -f "$TGZ_PATH" ]]; then
+        echo "Response preview:"
+        head -c 500 "$TGZ_PATH"
+        echo ""
+        rm -f "$TGZ_PATH"
+    fi
+    exit 1
+fi
+
+if [[ ! -f "$TGZ_PATH" ]]; then
+    echo "Error: Download failed - file not created"
+    exit 1
+fi
+
+echo "tgz=$TGZ_PATH" >> "$GITHUB_OUTPUT"
+
+echo "Downloaded $TGZ_NAME"
diff --git a/npm/npm-push/action.yaml b/npm/npm-push/action.yaml
new file mode 100644
index 0000000..ae72484
--- /dev/null
+++ b/npm/npm-push/action.yaml
@@ -0,0 +1,37 @@
+name: npm-push
+description: "Publish an NPM package to a registry."
+inputs:
+  tgz:
+    description: "Path to the tarball file to publish."
+    required: true
+  registry:
+    description: "NPM registry URL."
+    required: false
+    default: "https://npm.pkg.github.com"
+  apiKey:
+    description: "NPM authentication token."
+    required: true
+  nodeVersion:
+    description: "Node.js version to use."
+    required: false
+    default: "20"
+  access:
+    description: "Package access level: public or restricted."
+    required: false
+    default: "public"
+runs:
+  using: "composite"
+  steps:
+  - name: "Setup Node.js"
+    uses: https://github.com/actions/setup-node@v4
+    with:
+      node-version: ${{ inputs.nodeVersion }}
+      registry-url: ${{ inputs.registry }}
+  - name: "Publish package"
+    env:
+      NODE_AUTH_TOKEN: ${{ inputs.apiKey }}
+    run: |
+      echo "Publishing ${{ inputs.tgz }} to ${{ inputs.registry }}"
+      npm publish ${{ inputs.tgz }} --access ${{ inputs.access }}
+      echo "Package published successfully"
+    shell: bash
diff --git a/npm/npm-query-versions-latest/action.yaml b/npm/npm-query-versions-latest/action.yaml
new file mode 100644
index 0000000..d752809
--- /dev/null
+++ b/npm/npm-query-versions-latest/action.yaml
@@ -0,0 +1,46 @@
+name: npm-query-versions-latest
+description: "Get the latest version of an NPM package."
+inputs:
+  name:
+    description: "Name of the package."
+    required: true
+  registry:
+    description: "NPM registry URL."
+    required: false
+    default: "https://npm.pkg.github.com"
+  authToken:
+    description: "Authentication token for the registry."
+    required: true
+  prerelease:
+    description: "Include prerelease packages. Values: true, false."
+    required: false
+    default: "false"
+  filter:
+    description: "String to filter by."
+    required: false
+  filterIsExpression:
+    description: "Is the filter a Regular Expression? Values: true, false."
+    required: false
+    default: "false"
+outputs:
+  version:
+    description: "The latest version of the specified package."
+    value: ${{ steps.parse.outputs.version }}
+runs:
+  using: "composite"
+  steps:
+  - name: "Get versions."
+    id: versions
+    uses: act/common/npm/npm-query-versions@master
+    with:
+      name: ${{ inputs.name }}
+      registry: ${{ inputs.registry }}
+      authToken: ${{ inputs.authToken }}
+      prerelease: ${{ inputs.prerelease }}
+  - name: "Parse query result."
+    id: parse
+    uses: act/common/utils/get-latest-version@master
+    with:
+      versions: ${{ steps.versions.outputs.versions }}
+      filter: ${{ inputs.filter }}
+      filterIsExpression: ${{ inputs.filterIsExpression }}
diff --git a/npm/npm-query-versions/action.yaml b/npm/npm-query-versions/action.yaml
new file mode 100644
index 0000000..9ab90ba
--- /dev/null
+++ b/npm/npm-query-versions/action.yaml
@@ -0,0 +1,28 @@
+name: npm-query-versions
+description: "Get all versions of an NPM package from a registry."
+inputs:
+  name:
+    description: "Name of the package."
+    required: true
+  registry:
+    description: "NPM registry URL."
+    required: false
+    default: "https://npm.pkg.github.com"
+  authToken:
+    description: "Authentication token for the registry."
+    required: true
+  prerelease:
+    description: "Include prerelease packages. Values: true, false."
+    required: false
+    default: "false"
+outputs:
+  versions:
+    description: "Newline-separated list of versions."
+    value: ${{ steps.query.outputs.versions }}
+runs:
+  using: "composite"
+  steps:
+  - name: "Query NPM registry for versions."
+    id: query
+    run: bash ${{ github.action_path }}/query_versions.sh "${{ inputs.name }}" "${{ inputs.registry }}" "${{ inputs.authToken }}" "${{ inputs.prerelease }}"
+    shell: bash
diff --git a/npm/npm-query-versions/query_versions.sh b/npm/npm-query-versions/query_versions.sh
new file mode 100644
index 0000000..75fa5fa
--- /dev/null
+++ b/npm/npm-query-versions/query_versions.sh
@@ -0,0 +1,45 @@
+#!/bin/bash
+set -e
+
+PACKAGE_NAME="$1"
+REGISTRY="$2"
+AUTH_TOKEN="$3"
+PRERELEASE="$4"
+
+if [[ ! -f "$GITHUB_OUTPUT" ]]; then
+    GITHUB_OUTPUT="/dev/fd/1"
+fi
+
+# Construct the registry URL
+REGISTRY_URL="$REGISTRY"
+if [[ "$REGISTRY" == "https://npm.pkg.github.com" ]]; then
+    # GitHub Packages uses a specific URL format
+    REGISTRY_URL="$REGISTRY"
+fi
+
+# Build curl headers
+CURL_HEADERS=(-H "Accept: application/vnd.npm.install-v1+json")
+if [[ -n "$AUTH_TOKEN" ]]; then
+    CURL_HEADERS+=(-H "Authorization: Bearer $AUTH_TOKEN")
+fi
+
+# Query the package metadata
+RESPONSE=$(curl -sL "${CURL_HEADERS[@]}" "$REGISTRY_URL/$PACKAGE_NAME" 2>/dev/null || echo "{}")
+
+# Extract versions
+if [[ "$PRERELEASE" == "true" ]]; then
+    # Get all versions
+    VERSIONS=$(echo "$RESPONSE" | jq -r '.versions | keys[]' 2>/dev/null || echo "")
+else
+    # Filter out prerelease versions (those with - in them)
+    VERSIONS=$(echo "$RESPONSE" | jq -r '.versions | keys[] | select(contains("-") | not)' 2>/dev/null || echo "")
+fi
+
+# Output versions separated by newlines
+if [[ -n "$VERSIONS" ]]; then
+    echo "versions<<EOF" >> "$GITHUB_OUTPUT"
+    echo "$VERSIONS" >> "$GITHUB_OUTPUT"
+    echo "EOF" >> "$GITHUB_OUTPUT"
+else
+    echo "versions=" >> "$GITHUB_OUTPUT"
+fi
diff --git a/npm/npm-test/action.yaml b/npm/npm-test/action.yaml
new file mode 100644
index 0000000..1b9e92d
--- /dev/null
+++ b/npm/npm-test/action.yaml
@@ -0,0 +1,69 @@
+name: npm-test
+description: "Install dependencies and run tests for an NPM package."
+inputs:
+  workingDirectory:
+    description: "Working directory containing package.json."
+    required: false
+    default: "."
+  nodeVersion:
+    description: "Node.js version to use."
+    required: false
+    default: "20"
+  testCommand:
+    description: "Command to run tests. Default: npm test"
+    required: false
+    default: "npm test"
+  coverageCommand:
+    description: "Command to run tests with coverage. Default: npm run test:coverage"
+    required: false
+    default: "npm run test:coverage"
+  runCoverage:
+    description: "Whether to run coverage. Values: true, false."
+    required: false
+    default: "false"
+  coverageDirectory:
+    description: "Directory for the coverage output. Default: coverage"
+    required: false
+    default: "coverage"
+  uploadArtifacts:
+    description: "Whether to upload test artifacts. Values: true, false."
+    required: false
+    default: "false"
+  artifactName:
+    description: "Name of the artifact to upload. Default: test-results"
+    required: false
+    default: "test-results"
+  retention-days:
+    description: "Number of retention days for artifacts. Default: 7"
+    required: false
+    default: "7"
+runs:
+  using: "composite"
+  steps:
+  - name: "Setup Node.js"
+    uses: https://github.com/actions/setup-node@v4
+    with:
+      node-version: ${{ inputs.nodeVersion }}
+      cache: npm
+      cache-dependency-path: ${{ inputs.workingDirectory }}/package-lock.json
+  - name: "Install dependencies"
+    run: npm ci
+    working-directory: ${{ inputs.workingDirectory }}
+    shell: bash
+  - name: "Run tests"
+    run: ${{ inputs.testCommand }}
+    working-directory: ${{ inputs.workingDirectory }}
+    shell: bash
+  - name: "Run tests with coverage"
+    if: ${{ inputs.runCoverage == 'true' }}
+    run: ${{ inputs.coverageCommand }}
+    working-directory: ${{ inputs.workingDirectory }}
+    shell: bash
+  - name: "Upload test artifacts"
+    if: ${{ inputs.uploadArtifacts == 'true' && always() }}
+    uses: https://github.com/ChristopherHX/gitea-upload-artifact@v4
+    with:
+      name: ${{ inputs.artifactName }}
+      path: ${{ inputs.workingDirectory }}/${{ inputs.coverageDirectory }}
+      if-no-files-found: warn
+      retention-days: ${{ inputs.retention-days }}