{"version":"2.1.269","anchor":"subagent-fork-lookup-drops-the-spawn-echo-field","canonical_anchor":"subagent-fork-lookup-drops-the-spawn-echo-field","heading":"Subagent fork lookup drops the 'spawn' echo field","tier":"internal","area":"Subagents","scope":null,"heads_up":null,"url":"https:\/\/changelogs.core-directive.com\/v\/2.1.269\/e\/subagent-fork-lookup-drops-the-spawn-echo-field","release_url":"https:\/\/changelogs.core-directive.com\/v\/2.1.269","markdown":"### Subagent fork lookup drops the 'spawn' echo field\n\nSubagent fork lookup no longer returns the original spawn payload alongside the matched agent\n\n**Unclear.** What consumed the dropped spawn field, and whether its removal has any visible effect, is not stated.\n\n**What**\n\nWhen Claude Code looks up which agent a fork (a duplicated subagent) should target by its subagent type, a successful match now returns only the matched agent. Previously it also returned the original spawn payload (the data describing how the subagent was launched) alongside the agent.\n\n**Why**\n\nDropping the spawn payload from this result means any code that relied on seeing the original spawn data after a successful fork lookup no longer gets it, though the finding does not say what depended on it.\n\n- Area: Subagents\n- Tier: Under the hood\n- Useful: 1\/5\n- Signal: 0\/5"}