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f9471f9591
Add a new `brew mcp-server` command for a Model Context Protocol (MCP) server for Homebrew. This integrates with AI/LLM tools like Claude, Claude Code and Cursor. It currently supports the calls needed/used by the MCP Inspector and Cursor (where I've tested it). It provides as `tools` the subcommands output by `brew help` but should be fairly straightforward to add more in future. It is implemented in a slightly strange way (a standalone Ruby command called from a shell command) as MCP servers need a faster startup time than a normal Homebrew Ruby command allows and fail if they don't get it. There are a few Ruby libraries available but, given how relatively simplistic the implementation is, it didn't feel worthwhile to use and vendor them.
14 lines
506 B
Ruby
14 lines
506 B
Ruby
# frozen_string_literal: true
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RSpec.describe "brew mcp-server", type: :system do
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it "starts the MCP server", :integration_test do
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# This is the easiest way to handle a newline here.
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# rubocop:disable Style/StringConcatenation
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expect { brew_sh "mcp-server", "--ping" }
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.to output("==> Started Homebrew MCP server...\n").to_stderr
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.and output('{"jsonrpc":"2.0","id":1,"result":{}}' + "\n").to_stdout
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.and be_a_success
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# rubocop:enable Style/StringConcatenation
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end
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end
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