MCP sandbox egress: allow <us2.make.com>

Preflight Checklist

• [x] I have searched existing issues and this hasn't been reported yet
• [x] This is a single bug report (please file separate reports for different bugs)
• [x] I am using the latest version of Claude Code

What's Wrong?

The Claude Code sandbox egress proxy blocks outbound connections to <us2.make.com>, preventing the <Make.com> MCP server from functioning. Raw evidence:

What Should Happen?

Request: add <us2.make.com> (and optionally <hook.us2.make.com>) to the sandbox egress allowlist so <Make.com> MCP tools work in Claude Code sessions.

Error Messages/Logs

curl <https://us2.make.com/mcp/u/.../sse>
TLS issuer: O=Anthropic; CN=sandbox-egress-production TLS Inspection CA
HTTP 403: Host not in allowlist

Steps to Reproduce

1. Configure <Make.com> MCP server in .mcp.json with SSE URL: <https://us2.make.com/mcp/u/.../sse>

1. Run Claude Code (web/CLI session)

1. Call mcp__make__authenticate tool

1. Run: curl <https://us2.make.com/mcp/u/.../sse>

Result: HTTP 403 "Host not in allowlist"
TLS issuer shows: O=Anthropic; CN=sandbox-egress-production TLS Inspection CA

The block is coming from Anthropic's own egress proxy, not <Make.com>.
<Make.com> support confirmed they do not block IPs.

Request: add <us2.make.com> and <hook.us2.make.com> to the sandbox egress allowlist.

Claude Model

Sonnet (default)

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

2.1.148

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

_No response_