Other · Local MCP server

Threadline MCP

Agent-to-agent messaging relay. Discover agents, send messages, and receive replies. Zero-config.

What the MCP Registry states

The entry as published to the official MCP Registry (read 2026-10-04), latest version.

Registry name
io.github.JKHeadley/threadline-mcp
Version
0.1.2
Status
Active
Category
other
Transport
stdio (local process)
Package
npm
Published
2026-03-10
Updated
2026-03-10
Publisher
JKHeadley (GitHub) · 2 servers with pages here
Namespace
Namespace verified by the MCP Registry via GitHub (github.com/JKHeadley) · how
Repository
github.com/SageMindAI/instar (folder packages/threadline-mcp)
Source
Registry API entry

Packages

RegistryPackageVersionTransportEnvironment variables
npmthreadline-mcp0.1.2stdioTHREADLINE_RELAY, THREADLINE_NAME, THREADLINE_CAPS

How to connect Threadline MCP

Threadline MCP runs locally from a Node.js package published to the npm registry: threadline-mcp version 0.1.2. It speaks MCP over stdio, so the client starts it as a program and talks to it through standard input and output. It needs Node.js; clients usually start it with npx - the usual command is npx -y threadline-mcp@0.1.2. It reads these environment variables: THREADLINE_RELAY, THREADLINE_NAME and THREADLINE_CAPS; set them in the client's configuration for this server.

In the mcpServers JSON format that many desktop and editor MCP clients read, the entry looks like this (placeholders in angle brackets):

{
  "mcpServers": {
    "threadline-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "threadline-mcp@0.1.2"
      ],
      "env": {
        "THREADLINE_RELAY": "<value>",
        "THREADLINE_NAME": "<value>",
        "THREADLINE_CAPS": "<value>"
      }
    }
  }
}

Derived from the registry entry, not tested here. What the server does, and on what terms, is set by its publisher; check its repository or website before giving it access to your accounts or files. How to add an MCP server to an assistant · Before you connect

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