{"version":"2.1.268","anchor":"new-watchartifact-tool-guidance-clean-up-opened-tabs-befor","canonical_anchor":"navigate-tool-now-instructs-claude-to-clean-up-tabs-it-opens","heading":"Browser tool instructions now tell Claude to close tabs it opened","tier":"notice","area":"Chrome & Browser","scope":null,"heads_up":null,"url":"https:\/\/changelogs.core-directive.com\/v\/2.1.268\/e\/new-watchartifact-tool-guidance-clean-up-opened-tabs-befor","release_url":"https:\/\/changelogs.core-directive.com\/v\/2.1.268","markdown":"### Browser tool instructions now tell Claude to close tabs it opened\n\nClaude is now instructed to close browser tabs it opened once they're no longer needed, unless you want them kept open\n\n**What** Tool instructions for browser tools now tell Claude that tabs it opens itself \u2014 whether implicitly via a standalone `navigate` call or explicitly for a task \u2014 are its own responsibility to close with `tabs_close_mcp` once no longer needed, the same as tabs created with `tabs_create_mcp`. This applies unless the user has asked for the tab to be kept open.\n\n**Why** This keeps the browser from accumulating tabs that Claude opened and forgot about, closing them automatically instead of leaving cleanup to the user.\n\n- Area: Chrome & Browser\n- Names: `tabs_close_mcp`\n- Tier: You'll notice\n- Useful: 1\/5\n- Signal: 1\/5"}