diff --git a/hive-metric/README.md b/hive-metric/README.md
index c17366a5..0a25a97d 100644
--- a/hive-metric/README.md
+++ b/hive-metric/README.md
@@ -21,9 +21,6 @@ The SDK reads standard OTEL environment variables automatically:
 - `OTEL_RESOURCE_ATTRIBUTES` — resource labels (`k=v,...`)
 
 The harness populates both per-agent when
-`services.hyperhive.otel.enable = true`. There's no
-`OTEL_EXPORTER_OTLP_HEADERS` and no way to add one: an agent exports
-straight to its hive's own collector and holds no upstream credential
-to put there (`nix/agent-modules/otel.nix`). See
-`docs/scheduler/observability.md` for the collector setup and the
-metrics hyperhive exports.
+`services.hyperhive.otel.enable = true`: an agent exports straight to
+its own hive's collector. See `docs/scheduler/observability.md` for
+the collector setup and the metrics hyperhive exports.