beacon mcp serve

Command Overview

beacon mcp serve starts the local Beacon MCP server over stdio or loopback HTTP JSON-RPC.

Command syntax

beacon mcp serve

The server reads the configured Beacon runtime JSONL log and exposes compact activity tools to MCP clients. Use stdio for clients that launch Beacon as a subprocess. Use HTTP only for local loopback testing or local tools that connect to a running server.

Flags

Flag	Description
`--user`	Use per-user endpoint paths. Enabled by default
`--system`	Use system endpoint paths
`--log-path PATH`	Runtime JSONL log path
`--transport stdio\|http`	MCP transport. Defaults to `stdio`
`--addr ADDR`	Loopback HTTP JSON-RPC listen address for `--transport http`. Defaults to `127.0.0.1:8766`

Examples

Run over stdio for desktop MCP clients:

Run over stdio for desktop MCP clients

beacon mcp serve --transport stdio

Example stdio client configuration:

{
  "mcpServers": {
    "beacon": {
      "command": "beacon",
      "args": ["mcp", "serve", "--transport", "stdio"]
    }
  }
}

Run over loopback HTTP JSON-RPC:

Run over loopback HTTP JSON-RPC

beacon mcp serve --transport http --addr 127.0.0.1:8766

Use a specific runtime log:

Use a specific runtime log

beacon mcp serve --log-path /path/to/runtime.jsonl

HTTP endpoints

Path	Description
`/mcp`	MCP JSON-RPC endpoint
`/health`	Local health check endpoint

Do not bind HTTP transport to a non-loopback interface. Beacon MCP is designed for local activity inspection, not remote administration.

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Install and Upgrade

CLI Resources

Command Manual

Command Overview

Flags

Examples

HTTP endpoints

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​Command Overview

​Flags

​Examples

​HTTP endpoints

​Related

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Command Overview

Flags

Examples

HTTP endpoints

Related