diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
new file mode 100644
index 0000000..5d4f1e8
--- /dev/null
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,106 @@
+name: CI
+
+on:
+  pull_request:
+    branches: [main]
+  push:
+    branches: [main]
+
+jobs:
+  test:
+    name: Tests
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        python-version: ["3.9", "3.10", "3.11", "3.12"]
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Set up Python ${{ matrix.python-version }}
+        uses: actions/setup-python@v5
+        with:
+          python-version: ${{ matrix.python-version }}
+          cache: 'pip'
+
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip
+          pip install -r requirements.txt
+          pip install -r requirements-dev.txt
+
+      - name: Run tests with pytest
+        run: |
+          pytest --cov=abstra_json_sql --cov-report=xml --cov-report=term -v
+
+      - name: Upload coverage to Codecov
+        uses: codecov/codecov-action@v4
+        if: matrix.python-version == '3.12'
+        with:
+          file: ./coverage.xml
+          flags: unittests
+          name: codecov-umbrella
+          fail_ci_if_error: false
+
+  lint:
+    name: Lint (Ruff)
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: "3.12"
+          cache: 'pip'
+
+      - name: Install ruff
+        run: |
+          python -m pip install --upgrade pip
+          pip install ruff
+
+      - name: Run ruff check
+        run: ruff check .
+
+      - name: Run ruff format check
+        run: ruff format --check .
+
+  typecheck:
+    name: Type Check (Pyright)
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: "3.12"
+          cache: 'pip'
+
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip
+          pip install -r requirements.txt
+          pip install pyright
+
+      - name: Run pyright
+        run: pyright abstra_json_sql
+
+  all-checks-passed:
+    name: All Checks Passed
+    runs-on: ubuntu-latest
+    needs: [test, lint, typecheck]
+    if: always()
+
+    steps:
+      - name: Check all jobs
+        run: |
+          if [ "${{ needs.test.result }}" != "success" ] || \
+             [ "${{ needs.lint.result }}" != "success" ] || \
+             [ "${{ needs.typecheck.result }}" != "success" ]; then
+            echo "One or more checks failed"
+            exit 1
+          fi
+          echo "All checks passed successfully!"
diff --git a/pyrightconfig.json b/pyrightconfig.json
new file mode 100644
index 0000000..cff2041
--- /dev/null
+++ b/pyrightconfig.json
@@ -0,0 +1,17 @@
+{
+  "include": [
+    "abstra_json_sql"
+  ],
+  "exclude": [
+    "**/__pycache__",
+    "**/build",
+    "**/dist",
+    "**/*_test.py"
+  ],
+  "pythonVersion": "3.9",
+  "pythonPlatform": "All",
+  "typeCheckingMode": "off",
+  "reportMissingImports": true,
+  "reportMissingTypeStubs": false,
+  "reportSyntaxError": true
+}
diff --git a/requirements-dev.txt b/requirements-dev.txt
new file mode 100644
index 0000000..1c52b44
--- /dev/null
+++ b/requirements-dev.txt
@@ -0,0 +1,11 @@
+# Development dependencies for abstra-json-sql
+
+# Testing
+pytest>=7.4.0
+pytest-cov>=4.1.0
+
+# Linting and formatting
+ruff>=0.1.0
+
+# Type checking
+pyright>=1.1.0
diff --git a/requirements.txt b/requirements.txt
index e69de29..ba8d98f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -0,0 +1,4 @@
+# Production dependencies for abstra-json-sql
+
+# Optional dependency for Pydantic model support
+pydantic>=2.0.0
diff --git a/ruff.toml b/ruff.toml
new file mode 100644
index 0000000..d26eb04
--- /dev/null
+++ b/ruff.toml
@@ -0,0 +1,34 @@
+# Ruff configuration for abstra-json-sql
+
+# Exclude common directories
+exclude = [
+    ".git",
+    ".pytest_cache",
+    ".ruff_cache",
+    "__pycache__",
+    "build",
+    "dist",
+    "*.egg-info",
+]
+
+# Target Python 3.9+
+target-version = "py39"
+
+# Line length
+line-length = 88
+
+[lint]
+# Enable pycodestyle (E, W), pyflakes (F), and isort (I)
+select = ["E", "F", "W", "I"]
+
+# Ignore specific rules
+ignore = [
+    "E501",  # Line too long (handled by formatter)
+]
+
+[format]
+# Use double quotes for strings
+quote-style = "double"
+
+# Indent with spaces
+indent-style = "space"