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import type { McpServer } from "@modelcontextprotocol/sdk/server/mcp.js";
/**
* Creates a safe tool handler that wraps async operations with standardized error handling.
* Automatically catches exceptions and formats them as MCP-compliant error responses.
*
* @param handler - The async function that performs the actual tool logic
* @returns A wrapped handler with consistent error handling
*/
export function safeToolHandler<T>(
handler: (args: T) => Promise<unknown>
): (args: T) => Promise<{ isError?: boolean; content: { type: "text"; text: string }[];[x: string]: unknown }> {
return async (args: T) => {
try {
const result = await handler(args);
return {
content: [{ type: "text" as const, text: JSON.stringify(result, null, 2) }],
};
} catch (error: unknown) {
const message = error instanceof Error ? error.message : "An unexpected error occurred";
console.error("[MCP Tool Error]", message);
return {
isError: true,
content: [{ type: "text" as const, text: `Error: ${message}` }],
};
}
};
}
/**
* Type definition for a tool registration function.
*/
export type ToolRegistrar = (mcp: McpServer) => void;
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