#.mcp.json
2 articles
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Pass tokens to .mcp.json from environment variables with ${VAR} expansion
Keep access tokens out of the .mcp.json you commit by referencing environment variables. The ${VAR} and ${VAR:-default} syntax, where expansion works, and team conventions.
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claude mcp add --scope: local vs project vs user, and which to pick
The three MCP scopes compared on where they are stored, who they are shared with, and which wins on a name clash. local is the default; project writes .mcp.json and needs approval.