{"version":"2.1.221","anchor":"gate-for-skipping-subagent-event-reads-during-delta-rehydrat","canonical_anchor":"gate-for-skipping-subagent-event-reads-during-delta-rehydrat","heading":"Gate for skipping subagent event reads during delta rehydrate","tier":"soon","area":"Sessions","scope":null,"heads_up":null,"url":"https:\/\/changelogs.core-directive.com\/v\/2.1.221\/e\/gate-for-skipping-subagent-event-reads-during-delta-rehydrat","release_url":"https:\/\/changelogs.core-directive.com\/v\/2.1.221","markdown":"### Gate for skipping subagent event reads during delta rehydrate\n\nA switch can skip one hydration read to speed session resume, but it is off.\n\n**What**\n\nA new remote-config gate can drop the subagent internal-event read from hydration when delta rehydration is already active.\n\n**Details**\n\n- Gate is tengu_ccr_subagent_skip_on_delta, fallback false.\n- Takes effect only when both this gate and delta rehydration are on; the subagent read is then removed from the parallel prefetch.\n- With the fallback, hydration prefetches subagent internal events as before.\n\n**Evidence**\n\n`tengu_ccr_subagent_skip_on_delta`\n\n- Flag `tengu_ccr_subagent_skip_on_delta`: Off in both readings (read for one account on one subscription tier against v2.1.221; this account: off, anonymous baseline: off, compiled default: off) These values were read against a different version of Claude Code, so treat them as the nearest reading available instead of one taken on this release.\n- Area: Sessions\n- Names: `tengu_ccr_subagent_skip_on_delta`\n- Tier: Nothing to try yet\n- Useful: 2\/5\n- Signal: 2\/5\n- Present in the build but not switched on"}