load_mcp_config

Load and validate MCP configuration from a JSON file.

Supports multiple server types:

• stdio: Process-based servers with command, args, env fields (default)
• sse: Server-Sent Events servers with type: "sse", url, and optional headers
• http: HTTP-based servers with type: "http", url, and optional headers

Any server type may also set an optional tool filter:

• allowedTools: list of tool names or patterns to keep (all others dropped)
• disabledTools: list of tool names or patterns to drop (all others kept)

Entries are either literal tool names or fnmatch-style glob patterns (entries containing *, ?, or [). Each entry is matched against both the bare MCP tool name and the server-prefixed form (f"{server_name}_{tool}"), so either read_* or fs_read_* works. Setting both fields on a single server is an error.