[BUG] claude mcp add example fails when I run it on environment variable format

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?

When I try to add a mcp tool with an environment variable, I get back an error. I tried the one that is suggested when you run claude mcp add --help for stdio and it fails too:

➜  solr-mcp-tool-eric-test claude mcp add --help

  # Add stdio server with environment variables:
  claude mcp add -e API_KEY=xxx my-server -- npx my-mcp-server

Then I run the example:

➜  solr-mcp-tool-eric-test claude mcp add -e API_KEY=xxx my-server -- npx my-mcp-server
Invalid environment variable format: my-server, environment variables should be added as: -e KEY1=value1 -e KEY2=value2

I am on the latest version installed with homebrew:

➜  solr-mcp-tool-eric-test claude --version
2.1.49 (Claude Code)

What Should Happen?

should create a mcp tool

Error Messages/Logs

➜  solr-mcp-tool-eric-test claude mcp add -e API_KEY=xxx my-server -- npx my-mcp-server
Invalid environment variable format: my-server, environment variables should be added as: -e KEY1=value1 -e KEY2=value2

Steps to Reproduce

1: run the command claude mcp add -e API_KEY=xxx my-server -- npx my-mcp-server
2: see the error

Claude Model

None

Is this a regression?

I don't know

Last Working Version

_No response_

Claude Code Version

2.1.49

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

_No response_