diff --git a/Makefile b/Makefile
new file mode 100644
index 00000000..efe766a3
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,43 @@
+# Variables
+UPSTREAM_REPO := upstream
+UPSTREAM_URL := https://github.com/gchq/CyberChef.git
+FORK_REPO := origin
+DEFAULT_BRANCH := main
+
+# Default target if no target is specified
+.DEFAULT_GOAL := help
+
+# Help command
+help:
+	@echo "Usage:"
+	@echo "  make pr PR_ID=<PR_ID>           - Fetch and push a PR from the upstream repo"
+	@echo "  make setup-upstream             - Set up upstream repo (idempotent)"
+	@echo "  make clean PR_ID=<PR_ID>        - Clean up the local PR branch"
+
+# Setup upstream repo (idempotent)
+setup-upstream:
+	@echo "Checking if upstream repo exists..."
+	@if ! git remote get-url $(UPSTREAM_REPO) >/dev/null 2>&1; then \
+		echo "Upstream repo not found. Adding upstream..."; \
+		git remote add $(UPSTREAM_REPO) $(UPSTREAM_URL); \
+	else \
+		echo "Upstream repo already exists."; \
+	fi
+
+# Fetch the PR from upstream, create a branch, and push it to your fork
+pr: setup-upstream
+	@if [ -z "$(PR_ID)" ]; then \
+		echo "Error: PR_ID is not set. Usage: make pr PR_ID=<PR_ID>"; \
+		exit 1; \
+	fi
+	git fetch $(UPSTREAM_REPO) pull/$(PR_ID)/head:pr-$(PR_ID)
+	git checkout pr-$(PR_ID)
+	git push $(FORK_REPO) pr-$(PR_ID)
+
+# Clean up the local PR branch
+clean:
+	@if [ -z "$(PR_ID)" ]; then \
+		echo "Error: PR_ID is not set. Usage: make clean PR_ID=<PR_ID>"; \
+		exit 1; \
+	fi
+	git branch -d pr-$(PR_ID)
diff --git a/src/core/operations/ZStandardDecode.mjs b/src/core/operations/ZStandardDecode.mjs
new file mode 100644
index 00000000..b984b192
--- /dev/null
+++ b/src/core/operations/ZStandardDecode.mjs
@@ -0,0 +1,56 @@
+/**
+ * @author Scarjit [ferdinand@linnenberg.dev]
+ * @copyright Crown Copyright 2024
+ * @license Apache-2.0
+ */
+
+import Operation from "../Operation.mjs";
+import OperationError from "../errors/OperationError.mjs";
+
+/**
+ * ZStandard Decode operation
+ */
+class ZStandardDecode extends Operation {
+
+    /**
+     * ZStandardDecode constructor
+     */
+    constructor() {
+        super();
+
+        this.name = "ZStandard Decode";
+        this.module = "Compression";
+        this.description = "Zstandard is a lossless data compression algorithm designed for fast compression and decompression. It was developed by Facebook.";
+        this.infoURL = "https://wikipedia.org/wiki/Zstd"; // Usually a Wikipedia link. Remember to remove localisation (i.e. https://wikipedia.org/etc rather than https://en.wikipedia.org/etc)
+        this.inputType = "ArrayBuffer";
+        this.outputType = "ArrayBuffer";
+        this.args = [
+            /* Example arguments. See the project wiki for full details.
+            {
+                name: "First arg",
+                type: "string",
+                value: "Don't Panic"
+            },
+            {
+                name: "Second arg",
+                type: "number",
+                value: 42
+            }
+            */
+        ];
+    }
+
+    /**
+     * @param {ArrayBuffer} input
+     * @param {Object[]} args
+     * @returns {ArrayBuffer}
+     */
+    run(input, args) {
+        // const [firstArg, secondArg] = args;
+
+        throw new OperationError("Test");
+    }
+
+}
+
+export default ZStandardDecode;