feat(cli): add PostHog telemetry and source tracking to Python & Node CLIs (#4699)

cli/python/src/mem0_cli/telemetry.py

@@ -0,0 +1,96 @@
+"""CLI telemetry — anonymous usage tracking via PostHog.
+
+Sends fire-and-forget events to PostHog by spawning a detached subprocess
+(telemetry_sender.py). The parent CLI process exits immediately; the
+subprocess handles email resolution, caching, and the HTTP POST.
+
+Disable with: MEM0_TELEMETRY=false
+"""
+
+from __future__ import annotations
+
+import hashlib
+import json
+import os
+import platform
+import subprocess
+import sys
+from typing import Any
+
+POSTHOG_API_KEY = "phc_hgJkUVJFYtmaJqrvf6CYN67TIQ8yhXAkWzUn9AMU4yX"
+POSTHOG_HOST = "https://us.i.posthog.com/i/v0/e/"
+
+
+def _is_telemetry_enabled() -> bool:
+    val = os.environ.get("MEM0_TELEMETRY", "true").lower()
+    return val not in ("false", "0", "no")
+
+
+def _get_distinct_id() -> str:
+    """Return a stable anonymous identifier for the current user.
+
+    Priority: cached user_email (from /v1/ping/) > MD5(api_key) > fallback.
+    Matches the SDK pattern in mem0/client/main.py.
+    """
+    try:
+        from mem0_cli.config import load_config
+
+        config = load_config()
+        if config.platform.user_email:
+            return config.platform.user_email
+        if config.platform.api_key:
+            return hashlib.md5(config.platform.api_key.encode()).hexdigest()
+    except Exception:
+        pass
+    return "anonymous-cli"
+
+
+def capture_event(event_name: str, properties: dict[str, Any] | None = None) -> None:
+    """Fire a PostHog event via a detached subprocess (non-blocking)."""
+    if not _is_telemetry_enabled():
+        return
+
+    try:
+        from mem0_cli import __version__
+        from mem0_cli.config import CONFIG_FILE, load_config
+        from mem0_cli.state import is_agent_mode
+
+        config = load_config()
+        distinct_id = _get_distinct_id()
+
+        payload = {
+            "api_key": POSTHOG_API_KEY,
+            "distinct_id": distinct_id,
+            "event": event_name,
+            "properties": {
+                "source": "CLI",
+                "language": "python",
+                "cli_version": __version__,
+                "agent_mode": is_agent_mode(),
+                "python_version": sys.version,
+                "os": sys.platform,
+                "os_version": platform.version(),
+                "$process_person_profile": False,
+                "$lib": "posthog-python",
+                **(properties or {}),
+            },
+        }
+
+        context = {
+            "payload": payload,
+            "posthog_host": POSTHOG_HOST,
+            "needs_email": not distinct_id or "@" not in distinct_id,
+            "mem0_api_key": config.platform.api_key or "",
+            "mem0_base_url": config.platform.base_url or "https://api.mem0.ai",
+            "config_path": str(CONFIG_FILE),
+        }
+
+        subprocess.Popen(
+            [sys.executable, "-m", "mem0_cli.telemetry_sender", json.dumps(context)],
+            stdout=subprocess.DEVNULL,
+            stderr=subprocess.DEVNULL,
+            start_new_session=True,
+            close_fds=True,
+        )
+    except Exception:
+        pass