diff --git a/Tools/gen_build_info.py b/Tools/gen_build_info.py
new file mode 100644
index 00000000000..0ab1b9169dd
--- /dev/null
+++ b/Tools/gen_build_info.py
@@ -0,0 +1,96 @@
+#!/usr/bin/env python3
+
+# Generates build info and injects it into the server zip files.
+
+import codecs
+import hashlib
+import io
+import json
+import os
+import subprocess
+from zipfile import ZipFile, ZIP_DEFLATED
+
+FILE = "SS14.Client.zip"
+
+SERVER_FILES = [
+    "SS14.Server_linux-x64.zip",
+    "SS14.Server_win-x64.zip"
+]
+
+VERSION = os.environ['GITHUB_SHA']
+print(VERSION)
+FORK_ID = "ADT"
+BUILD_URL = f"http://builds.adventurestation.space/builds/{{FORK_VERSION}}/{FILE}"
+MANIFEST_URL = f"http://builds.adventurestation.space/version/{{FORK_VERSION}}/manifest"
+MANIFEST_DOWNLOAD_URL = f"http://builds.adventurestation.space/version/{{FORK_VERSION}}/download"
+
+def main() -> None:
+    client_file = os.path.join("release", FILE)
+    manifest = generate_build_json(client_file)
+
+    for server in SERVER_FILES:
+        inject_manifest(os.path.join("release", server), manifest)
+
+
+def inject_manifest(zip_path: str, manifest: str) -> None:
+    with ZipFile(zip_path, "a", compression=ZIP_DEFLATED) as z:
+        print(manifest)
+        z.writestr("build.json", manifest)
+
+
+def generate_build_json(file: str) -> str:
+    # Env variables set by Jenkins.
+
+    hash = sha256_file(file)
+    engine_version = get_engine_version()
+    manifest_hash = generate_manifest_hash(file)
+
+    return json.dumps({
+        "download": BUILD_URL,
+        "hash": hash,
+        "version": VERSION,
+        "fork_id": FORK_ID,
+        "engine_version": engine_version,
+        "manifest_url": MANIFEST_URL,
+        "manifest_download_url": MANIFEST_DOWNLOAD_URL,
+        "manifest_hash": manifest_hash
+    })
+
+def generate_manifest_hash(file: str) -> str:
+    zip = ZipFile(file)
+    infos = zip.infolist()
+    infos.sort(key=lambda i: i.filename)
+
+    bytesIO = io.BytesIO()
+    writer = codecs.getwriter("UTF-8")(bytesIO)
+    writer.write("Robust Content Manifest 1\n")
+
+    for info in infos:
+        if info.filename[-1] == "/":
+            continue
+
+        bytes = zip.read(info)
+        hash = hashlib.blake2b(bytes, digest_size=32).hexdigest().upper()
+        writer.write(f"{hash} {info.filename}\n")
+
+    manifestHash = hashlib.blake2b(bytesIO.getbuffer(), digest_size=32)
+
+    return manifestHash.hexdigest().upper()
+
+def get_engine_version() -> str:
+    proc = subprocess.run(["git", "describe","--tags", "--abbrev=0"], stdout=subprocess.PIPE, cwd="RobustToolbox", check=True, encoding="UTF-8")
+    tag = proc.stdout.strip()
+    assert tag.startswith("v")
+    return tag[1:] # Cut off v prefix.
+
+
+def sha256_file(path: str) -> str:
+    with open(path, "rb") as f:
+        h = hashlib.sha256()
+        for b in iter(lambda: f.read(4096), b""):
+            h.update(b)
+
+        return h.hexdigest()
+
+if __name__ == '__main__':
+    main()