diff --git a/tests/environment_contract.py b/tests/environment_contract.py
index 10639dc..a2a68cb 100644
--- a/tests/environment_contract.py
+++ b/tests/environment_contract.py
@@ -67,6 +67,9 @@ def exact_pinned_map_case() -> None:
         # hosted Bluesky instances gate at their edge); stream carries the
         # gate in-process. Empty = open.
         "JETSTREAM_ARCHIVE_API_KEY": "archive-api-key",
+        # Named, metered, file-revocable keys beside the fleet key — the
+        # in-process approximation of the hosted gateway (semantic-parity.md)
+        "JETSTREAM_ARCHIVE_API_KEYS_FILE": "archive-api-keys-file",
     }
     # Upstream variables Stream knowingly has NOT ported: the PDS-direct
     # fleet bootstrap (upstream specs/notes/2026-08-03-pds-direct-backfill-