MCP Local Router MCP Server

An MCP (Model Context Protocol) local router that serves as an aggregation proxy for MCP servers. The mcp local router mcp server wraps that behind the Model Context Protocol, so an assistant can use it through 1 defined tool rather than through you.

What it actually does

This project is an MCP (Model Context Protocol) local router that serves as an aggregation proxy for MCP servers. It can connect to multiple upstream MCP servers and aggregate their functionalities into a single interface for downstream clients.

• Supports specifying a configuration file via command line arguments
• Supports configuring multiple upstream MCP servers
• Supports stdio transport
• Supports injecting environment variables into stdio transport
• Supports SSE transport with aggregated /sse and per-upstream /sse/{serverName} endpoints

Adding it to your client

Setup follows the usual MCP pattern — install or clone the server, register it in your client's configuration file, restart the client.

Its toolset

Everything the assistant can do here goes through one of these:

• Running — The Running tool exposed by this server

Configuration

You will need one environment variable: LINEAR_ACCESS_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.

Caveats

• It runs with your machine's permissions. That is convenient and also the reason to think about what you point it at before you approve a tool call.
• Missing credentials fail quietly in some clients — if no tools show up, check the environment block first.
• MCP clients confirm each tool call by default. Leave that on until you have watched what the mcp local router mcp server does with a few real requests.

When to reach for it

This sits in the developer tooling group, where several servers overlap in what they claim to do but differ sharply once you actually set them up. MCP Local Router's toolset — Running — is a fair guide to whether it matches your workflow. It is maintained by kaichen; worth a glance at recent repository activity before you build anything load-bearing on it.

We check each listing at SyncDev against the project's documentation before it goes live — if something here drifts out of date, it is a bug worth reporting.