{"version":"2.1.265","anchor":"new-startstop-instrumentation-around-repl-inner-tool-execut","canonical_anchor":"new-startstop-instrumentation-around-repl-inner-tool-execut","heading":"New start\/stop instrumentation around REPL inner tool execution","tier":"internal","area":"Telemetry","scope":null,"heads_up":null,"url":"https:\/\/changelogs.core-directive.com\/v\/2.1.265\/e\/new-startstop-instrumentation-around-repl-inner-tool-execut","release_url":"https:\/\/changelogs.core-directive.com\/v\/2.1.265","markdown":"### New start\/stop instrumentation around REPL inner tool execution\n\nClaude Code now internally marks the start and end of each tool call for both local and remote execution\n\n**What**\n\nThe internal code path that runs a tool call, whether it executes on the local machine or on a remote host, now records a marker just before and just after the actual call.\n\n**Why**\n\nThis is internal instrumentation. It does not change what happens when a tool runs, but lays groundwork for measuring or tracking tool execution more precisely.\n\n- Area: Telemetry\n- Tier: Under the hood\n- Useful: 1\/5\n- Signal: 1\/5"}