{"version":"2.1.299","anchor":"lost-calls-note-behind-tengu-iterative-lightning","canonical_anchor":"lost-calls-note-behind-tengu-iterative-lightning","heading":"Resumed sessions can warn Claude about lost tool calls","tier":"soon","area":"Sessions","scope":"individual","heads_up":false,"url":"https:\/\/changelogs.core-directive.com\/v\/2.1.299\/e\/lost-calls-note-behind-tengu-iterative-lightning","release_url":"https:\/\/changelogs.core-directive.com\/v\/2.1.299","markdown":"### Resumed sessions can warn Claude about lost tool calls\n\nWhen a session is resumed, Claude can now be warned about tool calls that were lost, but only when this is switched on remotely\n\n**What**\n\nA tool call is Claude asking to use a tool, such as running a command. When a session is resumed, Claude Code can now add an urgent reminder telling Claude that some tool calls were lost. The reminder is only added when a remote setting switches it on. By default it is off.\n\n**Why**\n\nIn practice, nothing changes unless the server turns the reminder on.\n\n- Flag `tengu_iterative_lightning`: Not enough to say (read for one account on one subscription tier against v2.1.299; this account: no value returned, anonymous baseline: no value returned, 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- Tier: Nothing to try yet\n- Useful: 2\/5\n- Signal: 3\/5\n- Scope: individual\n- Heads-up: no\n- Present in the build but not switched on"}