diff --git a/app/main.py b/app/main.py
old mode 100644
new mode 100755
index ae7a0a0..960d258
--- a/app/main.py
+++ b/app/main.py
@@ -21,10 +21,7 @@ def read_env_file_value(key: str, default: str = "") -> str:
     return default
 
 
-WEBHOOK_SECRET = os.getenv(
-    "WEBHOOK_SECRET",
-    read_env_file_value("WEBHOOK_SECRET", "")
-)
+WEBHOOK_SECRET = os.getenv("WEBHOOK_SECRET", read_env_file_value("WEBHOOK_SECRET", ""))
 
 APP_DEPLOY_SCRIPT = "/tools/deploy-app.sh"
 CORE_DEPLOY_SCRIPT = "/tools/deploy-core-service.sh"
@@ -49,31 +46,75 @@ def verify_signature(body: bytes, signature: str | None):
     if not signature:
         raise HTTPException(status_code=401, detail="Missing signature")
 
-    digest = hmac.new(
-        WEBHOOK_SECRET.encode("utf-8"),
-        body,
-        hashlib.sha256
-    ).hexdigest()
-
-    accepted = {
-        digest,
-        f"sha256={digest}",
-    }
+    digest = hmac.new(WEBHOOK_SECRET.encode("utf-8"), body, hashlib.sha256).hexdigest()
+    accepted = {digest, f"sha256={digest}"}
 
     signature = signature.strip()
 
     if not any(hmac.compare_digest(signature, item) for item in accepted):
-        print("Invalid signature", flush=True)
-        print(f"Received prefix: {signature[:16]}", flush=True)
-        print(f"Expected prefix: {digest[:16]}", flush=True)
         raise HTTPException(status_code=401, detail="Invalid signature")
 
 
-def run_command(command: list[str], repo_name: str):
+def first_commit(payload: dict) -> dict:
+    commits = payload.get("commits") or []
+    if commits:
+        return commits[-1] or {}
+    return payload.get("head_commit") or {}
+
+
+def extract_attribution(payload: dict) -> dict:
+    pusher = payload.get("pusher") or {}
+    sender = payload.get("sender") or {}
+    commit = first_commit(payload)
+    author = commit.get("author") or {}
+
+    pusher_name = (
+        pusher.get("full_name")
+        or pusher.get("username")
+        or pusher.get("name")
+        or sender.get("full_name")
+        or sender.get("login")
+        or sender.get("username")
+        or "unknown"
+    )
+
+    pusher_username = (
+        pusher.get("username")
+        or pusher.get("login")
+        or sender.get("login")
+        or sender.get("username")
+        or pusher_name
+        or "unknown"
+    )
+
+    commit_author = (
+        author.get("name")
+        or author.get("username")
+        or author.get("email")
+        or "unknown"
+    )
+
+    commit_sha = commit.get("id") or commit.get("sha") or payload.get("after") or "unknown"
+
+    return {
+        "pusher": str(pusher_name),
+        "pusher_username": str(pusher_username),
+        "commit_author": str(commit_author),
+        "commit_sha": str(commit_sha),
+    }
+
+
+def run_command(command: list[str], repo_name: str, deploy_env: dict[str, str]):
+    env = os.environ.copy()
+    env.update(deploy_env)
+
     print(f"Deploy started: {repo_name}", flush=True)
     print(f"Command: {' '.join(command)}", flush=True)
+    print(f"Trigger source: {env.get('APPFACTORY_TRIGGER_SOURCE')}", flush=True)
+    print(f"Pusher: {env.get('APPFACTORY_PUSHER')}", flush=True)
+    print(f"Commit author: {env.get('APPFACTORY_COMMIT_AUTHOR')}", flush=True)
 
-    result = subprocess.run(command, capture_output=True, text=True)
+    result = subprocess.run(command, capture_output=True, text=True, env=env)
 
     print(f"Deploy finished: {repo_name}", flush=True)
     print(f"Return code: {result.returncode}", flush=True)
@@ -95,7 +136,6 @@ async def gitea_webhook(
     x_hub_signature_256: str | None = Header(default=None),
 ):
     body = await request.body()
-
     signature = x_gitea_signature or x_hub_signature_256 or x_hub_signature
 
     verify_signature(body, signature)
@@ -106,14 +146,25 @@ async def gitea_webhook(
     if not repo_name:
         raise HTTPException(status_code=400, detail="Missing repository name")
 
+    attr = extract_attribution(payload)
+
     if repo_name in CORE_SERVICES:
         command = [CORE_DEPLOY_SCRIPT, repo_name]
     else:
         command = [APP_DEPLOY_SCRIPT, repo_name]
 
+    deploy_env = {
+        "APPFACTORY_TRIGGER_SOURCE": "webhook",
+        "APPFACTORY_TRIGGERED_BY_USERNAME": attr["pusher_username"],
+        "APPFACTORY_TRIGGERED_BY_DISPLAY_NAME": attr["pusher"],
+        "APPFACTORY_COMMIT_AUTHOR": attr["commit_author"],
+        "APPFACTORY_PUSHER": attr["pusher"],
+        "APPFACTORY_COMMIT_SHA": attr["commit_sha"],
+    }
+
     threading.Thread(
         target=run_command,
-        args=(command, repo_name),
+        args=(command, repo_name, deploy_env),
         daemon=True,
     ).start()
 
@@ -121,4 +172,6 @@ async def gitea_webhook(
         "status": "accepted",
         "repo": repo_name,
         "core": repo_name in CORE_SERVICES,
+        "triggered_by": attr["pusher_username"],
+        "commit_author": attr["commit_author"],
     }