diff --git a/.github/workflows/deno.yml b/.github/workflows/deno.yml
new file mode 100644
index 0000000..502bb9d
--- /dev/null
+++ b/.github/workflows/deno.yml
@@ -0,0 +1,103 @@
+# This workflow uses actions that are not certified by GitHub.
+# They are provided by a third-party and are governed by
+# separate terms of service, privacy policy, and support
+# documentation.
+
+# This workflow will install Deno and run tests across stable and nightly builds on Windows, Ubuntu and macOS.
+# For more information see: https://github.com/denolib/setup-deno
+
+name: grammY validator
+
+on:
+    push:
+        branches: [main]
+    pull_request:
+        branches: [main]
+
+permissions:
+    contents: read
+
+jobs:
+    backport:
+        runs-on: ubuntu-latest
+        steps:
+            - name: Setup repo
+              uses: actions/checkout@v7
+              with:
+                  persist-credentials: false
+
+            - name: Setup Node
+              uses: actions/setup-node@v7
+              with:
+                  node-version: 24
+
+            - name: Install dependencies
+              run: npm install --ignore-scripts
+
+            - name: Run backporting
+              run: npm run backport
+
+    format-and-lint:
+        runs-on: ubuntu-latest
+        steps:
+            - name: Setup repo
+              uses: actions/checkout@v7
+              with:
+                  persist-credentials: false
+
+            - uses: denoland/setup-deno@v2
+              with:
+                  deno-version: v2.x
+
+            - name: Check Format
+              run: deno fmt --check
+
+            - name: Lint
+              run: deno lint
+
+            - name: Type Check
+              run: deno check
+
+    test:
+        runs-on: ${{ matrix.os }} # runs a test on Ubuntu, Windows and macOS
+
+        strategy:
+            matrix:
+                os: [macOS-latest, windows-latest, ubuntu-latest]
+
+        steps:
+            - name: Setup repo
+              uses: actions/checkout@v7
+              with:
+                  persist-credentials: false
+
+            - uses: denoland/setup-deno@v2
+              with:
+                  deno-version: v2.x
+
+            - name: Cache Dependencies
+              run: deno install
+
+            - name: Run Tests
+              run: deno test
+
+    coverage:
+        runs-on: ubuntu-latest
+        steps:
+            - name: Setup repo
+              uses: actions/checkout@v7
+              with:
+                  fetch-depth: 0
+                  persist-credentials: false
+
+            - uses: denoland/setup-deno@v2
+              with:
+                  deno-version: v2.x
+
+            - name: Create coverage files
+              run: deno task coverage
+
+            - name: Collect coverage
+              uses: codecov/codecov-action@v7 # upload the report on Codecov
+              with:
+                  files: ./test/cov_profile/lcov.info
diff --git a/.gitignore b/.gitignore
index c21fb20..1711e84 100644
--- a/.gitignore
+++ b/.gitignore
@@ -20,5 +20,10 @@ package-lock.json
 # Output of 'npm pack'
 *.tgz
 
+# Test coverage
+test/coverage
+test/cov_profile
+coverage.lcov
+
 # Build output
 out/
diff --git a/deno.jsonc b/deno.jsonc
index b2be2d5..979a550 100644
--- a/deno.jsonc
+++ b/deno.jsonc
@@ -1,10 +1,20 @@
 {
     "lock": false,
+    "tasks": {
+        "ok": "deno fmt --check && deno lint && deno check && deno test",
+        "clean": "git clean -fX out test/cov_profile test/coverage coverage.lcov",
+        "coverage": "deno task clean && deno test --coverage=./test/cov_profile && echo 'Point your browser to test/cov_profile/html/index.html to see the test coverage report.'"
+    },
     "fmt": {
         "indentWidth": 4,
         "proseWrap": "preserve"
     },
-    "exclude": ["./node_modules/", "./out/", "./package-lock.json"],
+    "exclude": [
+        "./node_modules/",
+        "./out/",
+        "./package-lock.json",
+        "./test/cov_profile"
+    ],
     "imports": {
         "@std/assert": "jsr:@std/assert@^1.0.19"
     }