Class: OpenLoam::Mcp::Server

Inherits:
Object
  • Object
show all
Defined in:
lib/open_loam/mcp/server.rb

Overview

The stdio transport for the OpenLoam MCP server (L-302): newline-delimited JSON-RPC over stdin/stdout, the MCP-spec stdio binding. Authenticates ONCE from OPEN_LOAM_MCP_TOKEN (a OpenLoam API token — never a tool argument, so it can't land in an agent transcript), then runs every message inside that token's tenant + actor. Nothing but JSON-RPC is written to stdout; logs go to stderr (wired in the rake task) — a stray stdout line corrupts the stream.

Instance Method Summary collapse

Constructor Details

#initialize(input: $stdin, output: $stdout, token: ENV["OPEN_LOAM_MCP_TOKEN"]) ⇒ Server

Returns a new instance of Server.



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# File 'lib/open_loam/mcp/server.rb', line 12

def initialize(input: $stdin, output: $stdout, token: ENV["OPEN_LOAM_MCP_TOKEN"])
  @input = input
  @output = output
  @token = token
end

Instance Method Details

#run ⇒ Object 



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# File 'lib/open_loam/mcp/server.rb', line 18

def run
  api_token = OpenLoam::ApiToken.authenticate(@token)
  return fail_auth unless api_token

  tenant = api_token.tenant
  actor = api_token.user

  @input.each_line do |line|
    line = line.strip
    next if line.empty?

    request = parse(line)
    next write(OpenLoam::Mcp.err(nil, -32700, "parse error")) if request.nil?

    begin
      response = OpenLoam.as_tenant(tenant, actor: actor) { OpenLoam::Mcp.handle_jsonrpc(request) }
      write(response) if response
    ensure
      OpenLoam::Current.reset
    end
  end
end