diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
new file mode 100644
index 0000000..45106fc
--- /dev/null
+++ b/.github/workflows/build.yml
@@ -0,0 +1,32 @@
+name: build
+
+on:
+  push: 
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+
+jobs:
+  directories: # Job that list subdirectories
+    runs-on: ubuntu-latest
+    outputs:
+      dir: ${{ steps.set-dirs.outputs.dir }} # generate output name dir by using inner step output
+    steps:
+      - uses: actions/checkout@v2
+      - id: set-dirs # Give it an id to handle to get step outputs in the outputs key above
+        run: echo "::set-output name=dir::$(ls -d */ | jq -R -s -c 'split("\n")[:-1]')"
+        # Define step output named dir base on ls command transformed to JSON thanks to jq
+  loop:
+    runs-on: ubuntu-latest
+    needs: [directories] # Depends on previous job
+    strategy:
+      matrix:
+        dir: ${{fromJson(needs.directories.outputs.dir)}} # List matrix strategy from directories dynamically
+    steps:
+      - uses: actions/checkout@v2
+      # only install and run tests if they exist on folder
+      - name: Build and run Jest tests
+        run: cd ${{matrix.dir}} && if ls ./src/*spec* &>/dev/null ; then npm i && npm run test; else echo "No Jest tests found. Skipping..." ; fi
+      # TODO: Make python tests work, for now they break because is not possible to mock Web3
+      - name: Build and run PyTest tests
+        run: cd ${{matrix.dir}} && if ls ./src/*test* &>/dev/null ; then echo "Tests without secret not supported yet, run locally -> npm i && npm run test"; else echo "No PyTest tests found. Skipping..." ; fi
diff --git a/README.md b/README.md
index efaec74..cca28fc 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,7 @@
 # Forta Agent Examples
 
+[![build](https://github.com/forta-protocol/forta-agent-examples/actions/workflows/build.yml/badge.svg)](https://github.com/forta-protocol/forta-agent-examples/actions/workflows/build.yml)
+
 These examples demonstrate the possible use cases of Forta Agents with little to no configuration.
 
 To run these examples, you'll need to:
diff --git a/minimum-balance-py/src/agent.py b/minimum-balance-py/src/agent.py
index 59b7708..c1db405 100644
--- a/minimum-balance-py/src/agent.py
+++ b/minimum-balance-py/src/agent.py
@@ -33,6 +33,5 @@ def handle_block(block_event):
 w3 = get_web3_provider()
 real_handle_block = provide_handle_block(w3)
 
-
 def handle_block(block_event):
-    return real_handle_block(block_event)
+    return real_handle_block(block_event)
\ No newline at end of file