A Model Context Protocol (MCP) server built with Next.js, providing useful tools and utilities through both HTTP and Server-Sent Events (SSE)
A Model Context Protocol (MCP) server built with Next.js, providing useful tools and utilities through both HTTP and Server-Sent Events (SSE) transports. Exposed over MCP by the custom mcp server, that capability becomes something an assistant can invoke while it works, not something you go and do afterwards.
Setup follows the usual MCP pattern — install or clone the server, register it in your client's configuration file, restart the client. The configuration blocks on this page cover the common clients.
Everything the assistant can do here goes through one of these:
echo — Echo any message back (perfect for testing)get-current-time — Get the current timestamp and ISO datecalculate — Perform basic mathematical calculations safelyPrerequisites — The Prerequisites tool exposed by this serverSetup — 1. Clone and install dependencies: bash npm installYou will need 3 environment variables: REDIS_URL, UPSTASH_REDIS_REST_URL, UPSTASH_REDIS_REST_TOKEN. The server will not start without them, which is usually why the tools fail to appear on a first run. Keep credentials in your client's env block or a secrets manager rather than in a file you might commit.
Plenty of developer tooling servers cover similar ground. The differences that matter in practice are scope of access and how much setup stands between you and a working tool call. Custom's toolset — echo, get-current-time, calculate and 2 more — is a fair guide to whether it matches your workflow. It is maintained by Meerisha; worth a glance at recent repository activity before you build anything load-bearing on it.
SyncDev reviews every entry in this directory against the project's own documentation before publishing, and revisits them as servers change.
| Tool | What it does |
|---|---|
| echo | Echo any message back (perfect for testing) |
| get-current-time | Get the current timestamp and ISO date |
| calculate | Perform basic mathematical calculations safely |
| Prerequisites | The Prerequisites tool exposed by this server. |
| Setup | 1. **Clone and install dependencies:** bash npm install |
For older Cursor versions:
```json
{
"mcpServers": {
"custom-mcp": {
"command": "npx",
"args": [
"-y",
"mcp-remote",
"http://localhost:3000/mcp"
]
}
}
}Configuration as documented by the project. Restart the client after saving.
| Variable | Description | Required |
|---|---|---|
| REDIS_URL | Endpoint or connection string the server talks to. | Yes |
| UPSTASH_REDIS_REST_URL | Endpoint or connection string the server talks to. | Yes |
| UPSTASH_REDIS_REST_TOKEN | Credential the server authenticates with. | Yes |
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