diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
new file mode 100644
index 0000000..2c97574
--- /dev/null
+++ b/.github/workflows/test.yml
@@ -0,0 +1,38 @@
+name: test aws action for put parameter store
+permissions:
+  contents: write
+  actions: write
+on:
+  push:
+    branches:
+      - dev
+      - main
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: test parameter store - input env
+        uses: ./
+        with:
+          parameters: test=test
+
+      - name: test parameter store - input multiline env
+        uses: ./
+        with:
+          parameters: |
+            test=test
+            test1="test1"
+
+      - name: test parameter store - input variables
+        uses: ./
+        env:
+          ENV_VAL: ${{ github.workspace }}
+        with:
+          parameters: |
+            test=test
+            test1="test1"
+            env_val=${{ env.ENV_VAL }}
+
diff --git a/.tool-versions b/.tool-versions
new file mode 100644
index 0000000..1d7a709
--- /dev/null
+++ b/.tool-versions
@@ -0,0 +1 @@
+python 3.12.3
diff --git a/Dockerfile b/Dockerfile
new file mode 100644
index 0000000..d98b29e
--- /dev/null
+++ b/Dockerfile
@@ -0,0 +1,13 @@
+FROM python:3.12.3-slim
+
+RUN apt-get update
+RUN pip install --upgrade pip
+
+COPY requirements.txt .
+RUN pip install -r requirements.txt
+
+WORKDIR /usr/src
+
+COPY ./src/ .
+
+ENTRYPOINT ["python", "/usr/src/aws_ssm.py"]
\ No newline at end of file
diff --git a/action.yml b/action.yml
new file mode 100644
index 0000000..c726c4f
--- /dev/null
+++ b/action.yml
@@ -0,0 +1,15 @@
+name: 'AWS SSM'
+description: 'A Github action for parameter store update'
+inputs:
+  parameters:
+    description: 'Provide parameters as json or .env file format with each pair for one line.'
+    required: false
+  params-file:
+    description: 'Write params to a json file and provide the file path from github workspace root.'
+    required: false
+runs:
+  using: docker
+  image: Dockerfile
+  env:
+    INPUT_PARAMS: ${{ inputs.parameters }}
+    INPUT_PARAMS_FILE_PATH: ${{ inputs.params-file }}
\ No newline at end of file
diff --git a/requirements.txt b/requirements.txt
new file mode 100644
index 0000000..1db657b
--- /dev/null
+++ b/requirements.txt
@@ -0,0 +1 @@
+boto3
\ No newline at end of file
diff --git a/src/aws_ssm.py b/src/aws_ssm.py
new file mode 100644
index 0000000..68fe02e
--- /dev/null
+++ b/src/aws_ssm.py
@@ -0,0 +1,28 @@
+import os
+import pathlib
+
+from inputs import AwsParameter, parse_input_params
+from common.aws_clients import get_client
+
+
+def run(aws_parameters: dict[str, AwsParameter]):
+    ssm_client = get_client(service_name='ssm',
+                            region_name=os.getenv('AWS_REGION'),
+                            aws_access_key=os.getenv('AWS_ACCESS_KEY'),
+                            aws_secret_key=os.getenv('AWS_SECRET_KEY'),
+                            )
+    for name, param in aws_parameters.items():
+        ssm_client.put_parameter(Name=param.name, Value=param.value, Type=param.param_type, Overwrite=param.overwrite)
+
+
+if __name__ == '__main__':
+    input_params = os.getenv('INPUT_PARAMS')
+    params_inline = parse_input_params(input_params) if input_params is not None else {}
+    params_from_file = {}
+    params_file_path = os.getenv('INPUT_PARAMS_FILE_PATH')
+    if params_file_path is not None and params_file_path != "":
+        path = pathlib.PurePath(os.getenv('GITHUB_WORKSPACE'), params_file_path)
+        with open(path, 'r') as f:
+            params_from_file = parse_input_params(f.read())
+    params = {**params_from_file, **params_inline}
+    run(params)
diff --git a/src/common/__init__.py b/src/common/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/src/common/aws_clients.py b/src/common/aws_clients.py
new file mode 100644
index 0000000..e89e36a
--- /dev/null
+++ b/src/common/aws_clients.py
@@ -0,0 +1,9 @@
+import os
+
+import boto3
+
+
+def get_client(service_name: str, region_name: str, aws_access_key: str, aws_secret_key: str):
+    return boto3.client(service_name=service_name, region_name=region_name,
+                        aws_access_key_id=aws_access_key,
+                        aws_secret_access_key=aws_secret_key)
diff --git a/src/inputs.py b/src/inputs.py
new file mode 100644
index 0000000..83ca5ff
--- /dev/null
+++ b/src/inputs.py
@@ -0,0 +1,48 @@
+import json
+from dataclasses import dataclass
+
+
+@dataclass(init=True)
+class AwsParameter:
+    name: str
+    value: str
+    param_type: str = 'String'
+    overwrite: bool = True
+
+
+def ensure_json_input(input_params: str):
+    try:
+        return json.loads(input_params)
+    except ValueError as e:
+        print('Not valid JSON')
+        return None
+
+
+def env_to_param(env_line: str) -> AwsParameter:
+    env_line = env_line.strip()
+    env_line = env_line.split(sep="=", maxsplit=1)
+    return AwsParameter(name=env_line[0], value=env_line[1])
+
+
+def ensure_env_input(input_params: str):
+    param_lines = input_params.strip().split(sep="\n")
+    return [param_line.strip() for param_line in param_lines]
+
+
+def value_to_aws_parameter(param_name, param_value):
+    parsed_value_json = ensure_json_input(param_value)
+    if parsed_value_json is None:
+        return AwsParameter(name=param_name, value=param_value)
+    value = parsed_value_json.get('value') if parsed_value_json.get('value') is not None else None
+    param_type = parsed_value_json.get('type') if parsed_value_json.get('type') is not None else 'String'
+    overwrite = parsed_value_json.get('overwrite') if parsed_value_json.get('overwrite') is not None else True
+    return AwsParameter(name=param_name, value=value, param_type=param_type, overwrite=overwrite)
+
+
+def parse_input_params(input_params: str):
+    parsed_params_json = ensure_json_input(input_params)
+    if parsed_params_json is not None:
+        return {key: value_to_aws_parameter(key, value) for key, value in parsed_params_json.items()}
+    parsed_params_env = ensure_env_input(input_params)
+    parsed_aws_params_env = [env_to_param(env_param) for env_param in parsed_params_env]
+    return {p.name: p for p in parsed_aws_params_env}