如下是我codex的config.toml配置 
[mcp_servers.context7]
command = "npx"                        
args = ["-y", "@upstash/context7-mcp"]  

[mcp_servers.serena]
command = "uvx"
args = ["--from", "git+https://github.com/oraios/serena", "serena", "start-mcp-server", "--context", "codex"]

但是codex cli却显示没有配置成功，网上也找不到mcp的配置教程。有没有大佬配置成功的愿意分享下经验 
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