{"version":"2.1.281","anchor":"mcp-era-negotiation-denylist-log-names-both-proxy-and-mcp-ur","canonical_anchor":"mcp-era-negotiation-denylist-log-names-both-proxy-and-mcp-ur","heading":"MCP era-negotiation denylist log names both proxy and mcp_url hosts","tier":null,"area":null,"url":"https:\/\/changelogs.core-directive.com\/v\/2.1.281\/e\/mcp-era-negotiation-denylist-log-names-both-proxy-and-mcp-ur","release_url":"https:\/\/changelogs.core-directive.com\/v\/2.1.281","markdown":"### MCP era-negotiation denylist log names both proxy and mcp_url hosts\n\nA debug message about MCP server connections now names both hosts it checked when a blocklist entry matches\n\n**What**\n\nMCP servers are outside tools that Claude Code can connect to. When a connection goes through a proxy (a middle server) that also carries an `mcp_url`, and a blocklist entry matches, the debug log now names both hosts: \"the proxy host X or the mcp_url host Y\".\n\n**Why**\n\nThe log now shows which two addresses were checked, so a matched entry is easier to trace back to its source."}