The eval docs named spark-1 by fleet hostname and published its inference endpoint (a tailnet address and port) plus the fact that it answers without an API key. This repo is PUBLIC, so that was a standing disclosure of an internal, unauthenticated service to anonymous readers. Endpoints now come from $SPARK_BASE_URL, which the operator exports, and the host is referred to as "the reference node" -- the convention the compute repo's docs already use. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_012AaUFYkUTsJn1fnJ89qbvW