{"version":"2.1.257","anchor":"new-telemetry-for-deferred-mcp-tool-consistency","canonical_anchor":"new-telemetry-for-deferred-mcp-tool-consistency","heading":"New telemetry for deferred MCP tool consistency","tier":"internal","area":"MCP","scope":null,"heads_up":null,"url":"https:\/\/changelogs.core-directive.com\/v\/2.1.257\/e\/new-telemetry-for-deferred-mcp-tool-consistency","release_url":"https:\/\/changelogs.core-directive.com\/v\/2.1.257","markdown":"### New telemetry for deferred MCP tool consistency\n\nDeferred MCP tool tracking now reports when a deferred tool's entry differs from what was actually sent.\n\nTracking of MCP tools declared with `defer_loading` now records whether a deferred tool's entry differs from what was actually sent when referenced, reporting via the `mcp_kept_deferred_tools` telemetry event, including a dedicated failure case for this bookkeeping.\n\n- Area: MCP\n- Names: `defer_loading`\n- Tier: Under the hood\n- Useful: 2\/5\n- Signal: 3\/5"}