response.ts•1.62 kB
// Utilities for formatting consistent responses
import { RequestHandlerExtra } from '@modelcontextprotocol/sdk/shared/protocol';
// Update the Response interface to include index signature
export interface SuccessResponse {
[key: string]: unknown;
content: {
type: 'text';
text: string;
mimeType?: string;
}[];
isError?: false;
}
export interface ErrorResponse {
[key: string]: unknown;
content: {
type: 'text';
text: string;
mimeType?: string;
}[];
isError: true;
}
export type Response = SuccessResponse | ErrorResponse;
// Create a successful JSON response
export function successJson(data: unknown): Response {
return {
content: [
{
type: 'text',
text: JSON.stringify(data, null, 2),
mimeType: 'application/json',
},
],
};
}
// Create a successful text response
export function successText(text: string): Response {
return {
content: [
{
type: 'text',
text,
},
],
};
}
// Create an error response
export function errorResponse(message: string): Response {
return {
content: [
{
type: 'text',
text: message,
},
],
isError: true,
};
}
// Wrapper to adapt tool handlers to MCP SDK format
export function adaptHandler<T>(
handler: (params: T) => Promise<Response>
): (params: T, extra: RequestHandlerExtra) => Promise<Response> {
return async (params: T, extra: RequestHandlerExtra): Promise<Response> => {
return await handler(params);
};
}
export default {
successJson,
successText,
errorResponse,
adaptHandler,
};