diff --git a/src/observability/otel.rs b/src/observability/otel.rs
index 092fd032c..613232c8a 100644
--- a/src/observability/otel.rs
+++ b/src/observability/otel.rs
@@ -35,13 +35,15 @@ impl OtelObserver {
     /// Uses HTTP/protobuf transport (port 4318 by default).
     /// Falls back to `http://localhost:4318` if no endpoint is provided.
     pub fn new(endpoint: Option<&str>, service_name: Option<&str>) -> Result<Self, String> {
-        let endpoint = endpoint.unwrap_or("http://localhost:4318");
+        let base_endpoint = endpoint.unwrap_or("http://localhost:4318");
+        let traces_endpoint = format!("{}/v1/traces", base_endpoint.trim_end_matches('/'));
+        let metrics_endpoint = format!("{}/v1/metrics", base_endpoint.trim_end_matches('/'));
         let service_name = service_name.unwrap_or("zeroclaw");
 
         // ── Trace exporter ──────────────────────────────────────
         let span_exporter = opentelemetry_otlp::SpanExporter::builder()
             .with_http()
-            .with_endpoint(endpoint)
+            .with_endpoint(&traces_endpoint)
             .build()
             .map_err(|e| format!("Failed to create OTLP span exporter: {e}"))?;
 
@@ -59,7 +61,7 @@ impl OtelObserver {
         // ── Metric exporter ─────────────────────────────────────
         let metric_exporter = opentelemetry_otlp::MetricExporter::builder()
             .with_http()
-            .with_endpoint(endpoint)
+            .with_endpoint(&metrics_endpoint)
             .build()
             .map_err(|e| format!("Failed to create OTLP metric exporter: {e}"))?;