diff --git a/.github/scripts/accumulate-traffic.py b/.github/scripts/accumulate-traffic.py
new file mode 100644
index 0000000..a5ea746
--- /dev/null
+++ b/.github/scripts/accumulate-traffic.py
@@ -0,0 +1,291 @@
+#!/usr/bin/env python3
+"""
+Accumulate traffic history and generate a live dashboard.
+Runs as a post-processing step after traffic-to-badge collects data.
+Merges today's paths/referrers snapshot into growing history files,
+then generates a self-contained HTML dashboard from all traffic data.
+"""
+
+import json
+import os
+import subprocess
+import sys
+from datetime import datetime, timezone
+
+REPO_SLUG = "system_prompts_leaks"
+TRAFFIC_DIR = f"traffic-{REPO_SLUG}"
+HISTORY_REFERRERS = "traffic_referrers_history.json"
+HISTORY_PATHS = "traffic_paths_history.json"
+
+def load_json(path):
+ try:
+ with open(path) as f:
+ return json.load(f)
+ except (FileNotFoundError, json.JSONDecodeError):
+ return None
+
+def fetch_from_branch(publish_dir, filename):
+ """Try to fetch a file from the traffic branch via git."""
+ full = f"{TRAFFIC_DIR}/{filename}"
+ try:
+ raw = subprocess.check_output(
+ ["git", "show", f"origin/traffic:{full}"],
+ stderr=subprocess.DEVNULL,
+ )
+ return json.loads(raw)
+ except (subprocess.CalledProcessError, json.JSONDecodeError):
+ return None
+
+def accumulate(publish_dir):
+ today = datetime.now(timezone.utc).strftime("%Y-%m-%d")
+ data_dir = os.path.join(publish_dir, TRAFFIC_DIR)
+
+ referrers = load_json(os.path.join(data_dir, "traffic_referrers.json"))
+ paths = load_json(os.path.join(data_dir, "traffic_paths.json"))
+
+ ref_history = (
+ load_json(os.path.join(data_dir, HISTORY_REFERRERS))
+ or fetch_from_branch(publish_dir, HISTORY_REFERRERS)
+ or []
+ )
+ path_history = (
+ load_json(os.path.join(data_dir, HISTORY_PATHS))
+ or fetch_from_branch(publish_dir, HISTORY_PATHS)
+ or []
+ )
+
+ existing_ref_dates = {e["date"] for e in ref_history}
+ existing_path_dates = {e["date"] for e in path_history}
+
+ if referrers and today not in existing_ref_dates:
+ ref_history.append({"date": today, "referrers": referrers})
+ ref_history.sort(key=lambda x: x["date"])
+
+ if paths and today not in existing_path_dates:
+ path_history.append({"date": today, "paths": paths})
+ path_history.sort(key=lambda x: x["date"])
+
+ with open(os.path.join(data_dir, HISTORY_REFERRERS), "w") as f:
+ json.dump(ref_history, f, separators=(",", ":"))
+
+ with open(os.path.join(data_dir, HISTORY_PATHS), "w") as f:
+ json.dump(path_history, f, separators=(",", ":"))
+
+ print(f"Accumulated: {len(ref_history)} referrer snapshots, {len(path_history)} path snapshots")
+ return ref_history, path_history
+
+def build_dashboard(publish_dir, ref_history, path_history):
+ data_dir = os.path.join(publish_dir, TRAFFIC_DIR)
+ views = load_json(os.path.join(data_dir, "traffic_views.json"))
+ clones = load_json(os.path.join(data_dir, "traffic_clones.json"))
+
+ if not views or not clones:
+ print("Missing views/clones data, skipping dashboard")
+ return
+
+ embedded = json.dumps({
+ "views": views,
+ "clones": clones,
+ "referrer_series": ref_history,
+ "paths_series": path_history,
+ }, separators=(",", ":"))
+
+ html = DASHBOARD_TEMPLATE.replace("__DATA_PLACEHOLDER__", embedded)
+
+ out_path = os.path.join(publish_dir, TRAFFIC_DIR, "dashboard.html")
+ with open(out_path, "w") as f:
+ f.write(html)
+ print(f"Dashboard written to {out_path}")
+
+DASHBOARD_TEMPLATE = r"""
+
+
+
+
+system_prompts_leaks — Traffic Dashboard
+
+
+
+
+
+system_prompts_leaks
+Traffic history — auto-updated daily from the traffic branch
+
+
+
+Top Pages & Referrers (latest 14-day window)
+
+
+
Top Referrers (current window)
+
All Referrers (union across all snapshots — peak 14-day count per source)
+
+Referrer Trends (14-day rolling windows)
+Top Referrer Counts Over Time