{"version":"2.0.5","anchor":"mcp-tool-token-instrumentation","canonical_anchor":"mcp-tool-token-instrumentation","heading":"MCP Tool Token Instrumentation","tier":null,"area":null,"scope":null,"heads_up":null,"url":"https:\/\/changelogs.core-directive.com\/v\/2.0.5\/e\/mcp-tool-token-instrumentation","release_url":"https:\/\/changelogs.core-directive.com\/v\/2.0.5","markdown":"### MCP Tool Token Instrumentation\n\nAdded telemetry for Model Context Protocol (MCP) tool usage, tracking both tool count and token consumption for optimization purposes.\n\n**Evidence**\n\nToken counting instrumentation at lines 446832-446838, new error code `Dn0 = 278` at line 339997 in v2.0.5"}