I've been exploring the Google Ads MCP server too - and I have to say, it's a solid option if you're already using Claude Desktop. I tried it last week and it just worked. You hook it up as an MCP plugin, and then you can ask for keyword ideas with volume and cost data straight from your conversation.
For example, I asked for terms around "hvac cooling repair" and it pulled back over two thousand relevant keywords. The top result - "heating ventilating and air conditioning" - showed about half a million monthly searches, medium competition, and an average CPC around eighteen bucks. "ac repair" gave around four hundred and fifty thousand searches with low competition but a much higher average CPC, nearly forty dollars. The data came straight from the API so it felt accurate enough for planning.
One thing I'd flag, based on past experience: Google is incredibly strict about approving API access for anything related to Ads. If you're thinking of building a SaaS product around this, expect a thorough review process. They'll want to know exactly how you're using the data, who your users are, and whether it complies with their policies. The MCP server itself is a handy tool for personal or agency use, but scaling it takes more than just plugging it in. Think of it like borrowing a library card versus trying to open your own library.