diff --git a/app.py b/app.py
index 7a374b5..cd28cad 100644
--- a/app.py
+++ b/app.py
@@ -1,11 +1,14 @@
 #!/usr/bin/env python3
 """Creatr App"""
 from flask import Flask, Response, request, Request, abort, jsonify
+
 from demo.utils.checker import inbox_prechecker
+from demo.activitypub import ME
 from demo import config
 
 
-app = Flask(__name__)
+app = Flask(__name__,
+            static_folder="demo/static",)
 
 def is_ap_requested(ap_request: Request) -> bool:
     """Check request accept headers."""
@@ -100,3 +103,12 @@ def wellknown_webfinger() -> Response:
     resp.headers["Content-Type"] = "application/jrd+json; charset=utf-8"
 
     return resp
+
+
+@app.route(f"/meow/{config.USERNAME}")
+def locate_user() -> Response:
+    """Return user ActivityPub response."""
+    resp = jsonify(ME)
+    resp.headers["Content-Type"] = "application/activity+json"
+
+    return resp
diff --git a/demo/activitypub.py b/demo/activitypub.py
index 3f54226..85db5d9 100644
--- a/demo/activitypub.py
+++ b/demo/activitypub.py
@@ -2,6 +2,61 @@
 """ActivityPub settings, fetch & post"""
 import httpx
 from demo import config
+from demo.utils.key import get_pubkey_as_pem
+
+
+AS_CTX = "https://www.w3.org/ns/activitystreams"
+AS_PUBLIC = "https://www.w3.org/ns/activitystreams#Public"
+
+AS_EXTENDED_CTX = [
+    "https://www.w3.org/ns/activitystreams",
+    "https://w3id.org/security/v1",
+    {
+        # AS ext
+        "Hashtag": "as:Hashtag",
+        "sensitive": "as:sensitive",
+        "manuallyApprovesFollowers": "as:manuallyApprovesFollowers",
+        "alsoKnownAs": {"@id": "as:alsoKnownAs", "@type": "@id"},
+        "movedTo": {"@id": "as:movedTo", "@type": "@id"},
+        # toot
+        "toot": "http://joinmastodon.org/ns#",
+        "featured": {"@id": "toot:featured", "@type": "@id"},
+        "Emoji": "toot:Emoji",
+        "blurhash": "toot:blurhash",
+        "votersCount": "toot:votersCount",
+    },
+]
+
+ME = {
+    "@context": AS_EXTENDED_CTX,
+    "type": "Person",
+    "id": config.ID,
+    "following": config.BASE_URL + "/following",
+    "followers": config.BASE_URL + "/followers",
+    "featured": config.BASE_URL + "/featured",
+    "inbox": config.BASE_URL + "/inbox",
+    "outbox": config.BASE_URL + "/outbox",
+    "preferredUsername": config.USERNAME,
+    "name": config.NICKNAME,
+    "summary": config.ACTOR_SUMMARY,
+    "endpoints": {
+        "sharedInbox": config.BASE_URL + "/inbox",
+    },
+    "url": config.ID + "/",  # the path is important for Mastodon compat
+    "manuallyApprovesFollowers": False,
+    "attachment": [],
+    "icon": {
+        "mediaType": "image/png",
+        "type": "Image",
+        "url": config.AVATAR_URL,
+    },
+    "publicKey": {
+        "id": f"{config.ID}#main-key",
+        "owner": config.ID,
+        "publicKeyPem": get_pubkey_as_pem(config.KEY_PATH),
+    },
+    "tag": [] # TODO tag support
+}
 
 
 def fetch(
diff --git a/demo/config.py.simple b/demo/config.py.simple
index 9316321..3119314 100644
--- a/demo/config.py.simple
+++ b/demo/config.py.simple
@@ -7,8 +7,11 @@ KEY_PATH = _ROOT_DIR / "data" / "key.pem"
 USER_AGENT = "COSCUP-demo"
 AP_CONTENT_TYPE = "application/activity+json"
 
+ACTOR_SUMMARY = "I'm banana"
 USERNAME = "foo"
-DOMAIN = "localhost"
+NICKNAME = "foo"
 SCHEME = "http"
+DOMAIN = "localhost"
+BASE_URL = f"{SCHEME}://{DOMAIN}"
 ID = f"{SCHEME}://{DOMAIN}/user/{USERNAME}"
-BASE_URL = f"{SCHEME}://{DOMAIN}/"
+AVATAR_URL = f"{BASE_URL}/static/avatar.png"
diff --git a/demo/static/avatar.png b/demo/static/avatar.png
new file mode 100644
index 0000000..0e833db
Binary files /dev/null and b/demo/static/avatar.png differ
diff --git a/demo/utils/key.py b/demo/utils/key.py
index c04124b..e637bb2 100644
--- a/demo/utils/key.py
+++ b/demo/utils/key.py
@@ -1,8 +1,5 @@
 #!/usr/bin/env python3
 """process Key."""
-
-import sys
-
 from pathlib import Path
 from Crypto.PublicKey import RSA
 from demo.config import KEY_PATH
@@ -12,14 +9,3 @@ def get_pubkey_as_pem(key_path: Path) -> str:
     """Exporting public key from private key file."""
     text = key_path.read_text()
     return RSA.import_key(text).public_key().export_key("PEM").decode("utf-8")
-
-
-def gen_key():
-    """Generate key."""
-    if KEY_PATH.exists():
-        print("is existing!")
-        sys.exit(2)
-    else:
-        k = RSA.generate(2048)
-        privkey_pem = k.exportKey("PEM").decode("utf-8")
-        KEY_PATH.write_text(privkey_pem)