diff --git a/ansible/vars/mods_ext.yml b/ansible/vars/mods_ext.yml
new file mode 100644
index 0000000..fcb41e1
--- /dev/null
+++ b/ansible/vars/mods_ext.yml
@@ -0,0 +1,10 @@
+mods:
+  - slug: fabric-api
+    source: modrinth
+    category: core
+  - slug: cloth-config
+    source: modrinth
+    category: config
+  - slug: spark
+    source: modrinth
+    category: monitoring
diff --git a/readme.md b/readme.md
index 9a51e51..8686a42 100644
--- a/readme.md
+++ b/readme.md
@@ -61,3 +61,11 @@
 - 자세한 과정은 [Notion 문서](https://www.notion.so/MC-2241afe72e6980da8b2ac86e0bcf270e)를 참고하실 수 있습니다.
 
 
+### 모드 관리 도구
+`scripts/mod_manager.py`를 사용하면 모드 목록(`ansible/vars/mods_ext.yml`)을 기반으로
+다운로드 링크와 체크섬이 포함된 `mods.yml`을 자동으로 생성할 수 있습니다.
+간단한 웹 UI를 보려면 다음을 실행합니다.
+```bash
+streamlit run scripts/mod_manager.py gui
+```
+
diff --git a/requirements.txt b/requirements.txt
new file mode 100644
index 0000000..fa7e587
--- /dev/null
+++ b/requirements.txt
@@ -0,0 +1,3 @@
+requests
+PyYAML
+streamlit
diff --git a/scripts/__init__.py b/scripts/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/scripts/mod_manager.py b/scripts/mod_manager.py
new file mode 100755
index 0000000..bfbf0b9
--- /dev/null
+++ b/scripts/mod_manager.py
@@ -0,0 +1,121 @@
+#!/usr/bin/env python3
+"""Manage Minecraft mods defined in YAML files.
+
+This script fetches mod data from Modrinth and generates the Ansible
+``mods.yml`` list with download URLs and SHA256 checksums.
+Optionally a minimal GUI using Streamlit can display the current list.
+"""
+from __future__ import annotations
+
+import argparse
+import hashlib
+from pathlib import Path
+from typing import Any, Dict, List
+
+import requests
+import yaml
+
+BASE_URL = "https://api.modrinth.com/v2"
+EXTENDED_PATH = Path("ansible/vars/mods_ext.yml")
+OUTPUT_PATH = Path("ansible/vars/mods.yml")
+VERSION_PATH = Path("ansible/vars/versions.yml")
+
+
+def load_yaml(path: Path) -> Any:
+    with path.open("r", encoding="utf-8") as f:
+        return yaml.safe_load(f)
+
+
+def save_yaml(path: Path, data: Any) -> None:
+    with path.open("w", encoding="utf-8") as f:
+        yaml.dump(data, f, sort_keys=False)
+
+
+def fetch_modrinth_version(slug: str, game_version: str) -> Dict[str, Any]:
+    """Return download info for the latest version of a Modrinth project."""
+    project = requests.get(f"{BASE_URL}/project/{slug}").json()
+    project_id = project["id"]
+    params = {
+        "loaders": ["fabric"],
+        "game_versions": [game_version],
+        "limit": 1,
+    }
+    versions = requests.get(
+        f"{BASE_URL}/project/{project_id}/version", params=params
+    ).json()
+    if not versions:
+        raise ValueError(f"No version found for {slug} on {game_version}")
+    version = versions[0]
+    file_info = version["files"][0]
+    return {
+        "name": file_info["filename"],
+        "url": file_info["url"],
+    }
+
+
+def sha256_from_url(url: str) -> str:
+    """Download ``url`` and return ``sha256:<hexdigest>``."""
+    h = hashlib.sha256()
+    with requests.get(url, stream=True) as resp:
+        resp.raise_for_status()
+        for chunk in resp.iter_content(chunk_size=8192):
+            h.update(chunk)
+    return "sha256:" + h.hexdigest()
+
+
+def generate_mods() -> None:
+    versions = load_yaml(VERSION_PATH)
+    data = load_yaml(EXTENDED_PATH)
+    game_version = versions["afabric_mc_version"]
+    mods: List[Dict[str, str]] = []
+    for mod in data.get("mods", []):
+        if mod.get("source") != "modrinth":
+            continue
+        info = fetch_modrinth_version(mod["slug"], game_version)
+        checksum = sha256_from_url(info["url"])
+        mods.append(
+            {
+                "name": info["name"],
+                "url": info["url"],
+                "checksum": checksum,
+            }
+        )
+    save_yaml(OUTPUT_PATH, {"fabric_mods": mods})
+    print(f"Wrote {OUTPUT_PATH} with {len(mods)} entries")
+
+
+def list_mods() -> None:
+    data = load_yaml(EXTENDED_PATH)
+    for mod in data.get("mods", []):
+        cat = mod.get("category", "unknown")
+        print(f"{mod['slug']}: {cat}")
+
+
+def run_gui() -> None:
+    import streamlit as st
+
+    data = load_yaml(EXTENDED_PATH)
+    st.title("Minecraft Mod Manager")
+    st.write("Mods defined in", EXTENDED_PATH)
+    for mod in data.get("mods", []):
+        st.write(f"**{mod['slug']}** - {mod.get('category', 'unknown')}")
+
+
+def main(argv: List[str] | None = None) -> None:
+    parser = argparse.ArgumentParser(description="Manage mod list")
+    sub = parser.add_subparsers(dest="cmd", required=True)
+    sub.add_parser("generate", help="Generate mods.yml from mods_ext.yml")
+    sub.add_parser("list", help="List mods with categories")
+    sub.add_parser("gui", help="Launch simple web interface")
+    args = parser.parse_args(argv)
+
+    if args.cmd == "generate":
+        generate_mods()
+    elif args.cmd == "list":
+        list_mods()
+    elif args.cmd == "gui":
+        run_gui()
+
+
+if __name__ == "__main__":
+    main()
diff --git a/tests/test_mod_manager.py b/tests/test_mod_manager.py
new file mode 100644
index 0000000..d8bfbe0
--- /dev/null
+++ b/tests/test_mod_manager.py
@@ -0,0 +1,34 @@
+from pathlib import Path
+import sys
+
+sys.path.insert(0, str(Path(__file__).resolve().parents[1]))
+import scripts.mod_manager as mm  # noqa: E402
+
+
+class DummyResp:
+    def __init__(self, content: bytes):
+        self._content = content
+
+    def iter_content(self, chunk_size=8192):
+        yield self._content
+
+    def raise_for_status(self):
+        pass
+
+    def __enter__(self):
+        return self
+
+    def __exit__(self, exc_type, exc, tb):
+        pass
+
+
+def test_sha256_from_url(monkeypatch):
+    def fake_get(url, stream=False):
+        return DummyResp(b"test")
+
+    monkeypatch.setattr(mm.requests, "get", fake_get)
+    expected = (
+        "sha256:9f86d081884c7d659a2feaa0c55ad015"
+        "a3bf4f1b2b0b822cd15d6c15b0f00a08"
+    )
+    assert mm.sha256_from_url("http://example.com") == expected