diff --git a/module/api/README.md b/module/api/README.md
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--- /dev/null
+++ b/module/api/README.md
@@ -0,0 +1,3 @@
+# E2E Multi-Agent Test
+
+Full lifecycle test.
diff --git a/module/api/main.py b/module/api/main.py
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+++ b/module/api/main.py
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+from flask import Flask
+from routes.user import user_bp
+app = Flask(__name__)
+app.register_blueprint(user_bp, url_prefix='/api/users')
+if __name__ == '__main__': app.run(port=5000, debug=True)
diff --git a/module/api/requirements.txt b/module/api/requirements.txt
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+++ b/module/api/requirements.txt
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+flask>=3.0.0
+gunicorn>=21.2.0
+sqlalchemy>=2.0.0
diff --git a/module/api/routes/user.py b/module/api/routes/user.py
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+++ b/module/api/routes/user.py
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+from flask import Blueprint, jsonify
+user_bp = Blueprint('user', __name__)
+@user_bp.route('/')
+def list_users(): return jsonify([])
+@user_bp.route('/<int:id>')
+def get_user(id): return jsonify({'id': id})