diff --git a/cli/internal/compose/compose.yml.tmpl b/cli/internal/compose/compose.yml.tmpl
index 775c701c20..9706fff6d6 100644
--- a/cli/internal/compose/compose.yml.tmpl
+++ b/cli/internal/compose/compose.yml.tmpl
@@ -15,6 +15,7 @@ services:
       SYNTHORG_MEMORY_DIR: "/data/memory"
       SYNTHORG_PERSISTENCE_BACKEND: {{yamlStr .PersistenceBackend}}
       SYNTHORG_MEMORY_BACKEND: {{yamlStr .MemoryBackend}}
+      MEM0_TELEMETRY: "false"
       SYNTHORG_LOG_LEVEL: {{yamlStr .LogLevel}}
 {{- if .JWTSecret}}
       SYNTHORG_JWT_SECRET: {{yamlStr .JWTSecret}}
diff --git a/cli/testdata/compose_custom_ports.yml b/cli/testdata/compose_custom_ports.yml
index c35a04eb4a..e3b9d7542a 100644
--- a/cli/testdata/compose_custom_ports.yml
+++ b/cli/testdata/compose_custom_ports.yml
@@ -15,6 +15,7 @@ services:
       SYNTHORG_MEMORY_DIR: "/data/memory"
       SYNTHORG_PERSISTENCE_BACKEND: "sqlite"
       SYNTHORG_MEMORY_BACKEND: "mem0"
+      MEM0_TELEMETRY: "false"
       SYNTHORG_LOG_LEVEL: "debug"
       SYNTHORG_JWT_SECRET: "test-secret-value"
     user: "65532:65532"
diff --git a/cli/testdata/compose_default.yml b/cli/testdata/compose_default.yml
index 2cd2844951..5cc7a2f389 100644
--- a/cli/testdata/compose_default.yml
+++ b/cli/testdata/compose_default.yml
@@ -15,6 +15,7 @@ services:
       SYNTHORG_MEMORY_DIR: "/data/memory"
       SYNTHORG_PERSISTENCE_BACKEND: "sqlite"
       SYNTHORG_MEMORY_BACKEND: "mem0"
+      MEM0_TELEMETRY: "false"
       SYNTHORG_LOG_LEVEL: "info"
     user: "65532:65532"
     # CIS Docker Benchmark v1.6.0 hardening (5.3, 5.12, 5.25, 5.28)
diff --git a/cli/testdata/compose_digest_pins.yml b/cli/testdata/compose_digest_pins.yml
index ef44dee054..9def8cde0d 100644
--- a/cli/testdata/compose_digest_pins.yml
+++ b/cli/testdata/compose_digest_pins.yml
@@ -15,6 +15,7 @@ services:
       SYNTHORG_MEMORY_DIR: "/data/memory"
       SYNTHORG_PERSISTENCE_BACKEND: "sqlite"
       SYNTHORG_MEMORY_BACKEND: "mem0"
+      MEM0_TELEMETRY: "false"
       SYNTHORG_LOG_LEVEL: "info"
     user: "65532:65532"
     # CIS Docker Benchmark v1.6.0 hardening (5.3, 5.12, 5.25, 5.28)
diff --git a/docker/.env.example b/docker/.env.example
index e5fa6a1db6..ead26fa080 100644
--- a/docker/.env.example
+++ b/docker/.env.example
@@ -33,6 +33,11 @@ BACKEND_PORT=8000
 # Host port for the web dashboard
 WEB_PORT=3000
 
+# --- Mem0 Memory Backend ----------------------------------------------------
+# Disable Mem0 telemetry (avoids initializing an extra vector store for
+# telemetry data collection — reduces overhead and keeps data local).
+MEM0_TELEMETRY=false
+
 # --- Docker Sandbox ----------------------------------------------------------
 # Docker socket for agent code execution sandbox (optional)
 # DOCKER_HOST=unix:///var/run/docker.sock
diff --git a/docker/compose.yml b/docker/compose.yml
index 0ff7c7b73d..8c41bb350a 100644
--- a/docker/compose.yml
+++ b/docker/compose.yml
@@ -19,6 +19,8 @@ services:
       SYNTHORG_PORT: "${SYNTHORG_PORT:-8000}"
       SYNTHORG_DB_PATH: "/data/synthorg.db"
       SYNTHORG_MEMORY_DIR: "/data/memory"
+      # Disable Mem0 telemetry by default. Override in .env to enable.
+      MEM0_TELEMETRY: "${MEM0_TELEMETRY:-false}"
       # Bridge SYNTHORG_* to uvicorn's native env vars (exec form CMD, no shell)
       UVICORN_HOST: "${SYNTHORG_HOST:-0.0.0.0}"
       UVICORN_PORT: "${SYNTHORG_PORT:-8000}"