{"version":"2.1.234","anchor":"mcp-connection-telemetry-gains-negotiation-and-listen-fields","canonical_anchor":"mcp-connection-telemetry-gains-negotiation-and-listen-fields","heading":"MCP connection telemetry gains negotiation and listen fields","tier":"internal","area":"MCP","scope":null,"heads_up":null,"url":"https:\/\/changelogs.core-directive.com\/v\/2.1.234\/e\/mcp-connection-telemetry-gains-negotiation-and-listen-fields","release_url":"https:\/\/changelogs.core-directive.com\/v\/2.1.234","markdown":"### MCP connection telemetry gains negotiation and listen fields\n\nMCP connection reports now show when a server skipped protocol negotiation or had listening suppressed.\n\n**What**\n\nConnection events for MCP servers now record whether negotiation was denylisted and whether listening was suppressed, alongside the existing probe-fallback fields, making it visible when a server skipped protocol negotiation.\n\n**Evidence**\n\n`negotiationDenylisted`\n\n- Area: MCP\n- Tier: Under the hood\n- Useful: 2\/5\n- Signal: 3\/5"}