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import { Request, Response } from 'express';
import { ApiResponse } from '../types/index.js';
const REGISTRY_BASE_URL = 'https://registry.modelcontextprotocol.io/v0.1';
/**
* Get all MCP servers from the official registry
* Proxies the request to avoid CORS issues in the frontend
* Supports cursor-based pagination
*/
export const getAllRegistryServers = async (req: Request, res: Response): Promise<void> => {
try {
const { cursor, limit, search } = req.query;
// Build URL with query parameters
const url = new URL(`${REGISTRY_BASE_URL}/servers`);
if (cursor && typeof cursor === 'string') {
url.searchParams.append('cursor', cursor);
}
if (limit && typeof limit === 'string') {
const limitNum = parseInt(limit, 10);
if (!isNaN(limitNum) && limitNum > 0) {
url.searchParams.append('limit', limit);
}
}
if (search && typeof search === 'string') {
url.searchParams.append('search', search);
}
const response = await fetch(url.toString(), {
headers: {
Accept: 'application/json, application/problem+json',
},
});
if (!response.ok) {
throw new Error(`HTTP error! status: ${response.status}`);
}
const data = await response.json();
const apiResponse: ApiResponse<typeof data> = {
success: true,
data: data,
};
res.json(apiResponse);
} catch (error) {
console.error('Error fetching registry servers:', error);
const errorMessage =
error instanceof Error ? error.message : 'Failed to fetch registry servers';
res.status(500).json({
success: false,
message: errorMessage,
});
}
};
/**
* Get all versions of a specific MCP server
* Proxies the request to avoid CORS issues in the frontend
*/
export const getRegistryServerVersions = async (req: Request, res: Response): Promise<void> => {
try {
const { serverName } = req.params;
if (!serverName) {
res.status(400).json({
success: false,
message: 'Server name is required',
});
return;
}
// URL encode the server name
const encodedName = encodeURIComponent(serverName);
const response = await fetch(`${REGISTRY_BASE_URL}/servers/${encodedName}/versions`, {
headers: {
Accept: 'application/json, application/problem+json',
},
});
if (!response.ok) {
if (response.status === 404) {
res.status(404).json({
success: false,
message: 'Server not found',
});
return;
}
throw new Error(`HTTP error! status: ${response.status}`);
}
const data = await response.json();
const apiResponse: ApiResponse<typeof data> = {
success: true,
data: data,
};
res.json(apiResponse);
} catch (error) {
console.error('Error fetching registry server versions:', error);
const errorMessage =
error instanceof Error ? error.message : 'Failed to fetch registry server versions';
res.status(500).json({
success: false,
message: errorMessage,
});
}
};
/**
* Get a specific version of an MCP server
* Proxies the request to avoid CORS issues in the frontend
*/
export const getRegistryServerVersion = async (req: Request, res: Response): Promise<void> => {
try {
const { serverName, version } = req.params;
if (!serverName || !version) {
res.status(400).json({
success: false,
message: 'Server name and version are required',
});
return;
}
// URL encode the server name and version
const encodedName = encodeURIComponent(serverName);
const encodedVersion = encodeURIComponent(version);
const response = await fetch(
`${REGISTRY_BASE_URL}/servers/${encodedName}/versions/${encodedVersion}`,
{
headers: {
Accept: 'application/json, application/problem+json',
},
},
);
if (!response.ok) {
if (response.status === 404) {
res.status(404).json({
success: false,
message: 'Server version not found',
});
return;
}
throw new Error(`HTTP error! status: ${response.status}`);
}
const data = await response.json();
const apiResponse: ApiResponse<typeof data> = {
success: true,
data: data,
};
res.json(apiResponse);
} catch (error) {
console.error('Error fetching registry server version:', error);
const errorMessage =
error instanceof Error ? error.message : 'Failed to fetch registry server version';
res.status(500).json({
success: false,
message: errorMessage,
});
}
};
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