{"version":"2.1.323","anchor":"tool-results-exclude-appended-user-messages","canonical_anchor":"tool-results-exclude-appended-user-messages","heading":"Messages attached to a tool result are no longer sent twice","tier":"notice","area":"Tool Results","scope":"individual","heads_up":false,"url":"https:\/\/changelogs.core-directive.com\/v\/2.1.323\/e\/tool-results-exclude-appended-user-messages","release_url":"https:\/\/changelogs.core-directive.com\/v\/2.1.323","markdown":"### Messages attached to a tool result are no longer sent twice\n\nMessages meant to be attached to a tool's result are no longer also added as separate content\n\n**What**\n\nWhen Claude Code gathers the output of a tool, the result of an action Claude asked for, it now skips messages that are marked to be attached to that result. Before, these were also added as separate content.\n\n**Why**\n\nThis changes how tool output is put together before Claude reads it.\n\n- Area: Tool Results\n- Tier: You'll notice\n- Useful: 1\/5\n- Signal: 1\/5\n- Scope: individual\n- Heads-up: no"}