mcp-multiplexer 0.2.1

One MCP server fronting many: 7 meta-tools instead of every tool schema in context
Documentation 
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{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "title": "Config",
  "type": "object",
  "properties": {
    "mcpServers": {
      "type": "object",
      "additionalProperties": {
        "$ref": "#/$defs/ServerConfig"
      }
    }
  },
  "required": [
    "mcpServers"
  ],
  "$defs": {
    "ServerConfig": {
      "type": "object",
      "properties": {
        "allow": {
          "description": "If set, only these tools are visible (exact names or prefix* globs)",
          "type": [
            "array",
            "null"
          ],
          "default": null,
          "items": {
            "type": "string"
          }
        },
        "args": {
          "type": "array",
          "default": [],
          "items": {
            "type": "string"
          }
        },
        "command": {
          "type": [
            "string",
            "null"
          ],
          "default": null
        },
        "deny": {
          "description": "Always hidden/blocked; wins over allow",
          "type": "array",
          "default": [],
          "items": {
            "type": "string"
          }
        },
        "env": {
          "type": "object",
          "additionalProperties": {
            "type": "string"
          },
          "default": {}
        },
        "expose": {
          "description": "Bypass the meta-tools: expose this server's tools directly as server__tool",
          "type": "boolean",
          "default": false
        },
        "headers": {
          "type": "object",
          "additionalProperties": {
            "type": "string"
          },
          "default": {}
        },
        "oauth": {
          "description": "Enable OAuth 2.0 (PKCE) for this server — url servers only",
          "type": "boolean",
          "default": false
        },
        "oauth_client_id": {
          "description": "Pre-registered OAuth client ID; dynamic registration is used when unset",
          "type": [
            "string",
            "null"
          ],
          "default": null
        },
        "oauth_redirect_port": {
          "description": "Fixed port for the 127.0.0.1 callback listener, for providers that\nrequire an exact pre-registered redirect URI. Default: ephemeral port",
          "type": [
            "integer",
            "null"
          ],
          "format": "uint16",
          "default": null,
          "maximum": 65535,
          "minimum": 0
        },
        "oauth_scopes": {
          "description": "Scopes to request; server defaults when empty",
          "type": "array",
          "default": [],
          "items": {
            "type": "string"
          }
        },
        "url": {
          "type": [
            "string",
            "null"
          ],
          "default": null
        }
      },
      "additionalProperties": false
    }
  }
}