Yep, I agree! My MCP tools are local compiled Go binaries, and the tool that uploads my podcast is actually a local Go CLI that Claude calls. Claude's main role / intelligence is in evaluating which of the morning's HN & Lobsters news is most relevant to me specifically, and writing the podcast script. I'm all for deterministic tools, and it saves on tokens too.
One advantage of splitting it into MCP tools though, one day I'd run out of pre-paid OpenAI TTS credit, and Claude was smart enough to try using Mistral TTS instead. I could have done that fallback deterministically too, but it wasn't something I'd thought of yet.
I once had a friend tell me they'd got their AI to tell them the weather every morning... and the thought of that poor AI, web researching Weather APIs & writing a new python script to call the API every morning, instead of just doing the research once and making it a binary (or even just a curl line)... drove me crazy. All that wasted time and compute. Some people just like to watch tokens burn.
One advantage of splitting it into MCP tools though, one day I'd run out of pre-paid OpenAI TTS credit, and Claude was smart enough to try using Mistral TTS instead. I could have done that fallback deterministically too, but it wasn't something I'd thought of yet.
I once had a friend tell me they'd got their AI to tell them the weather every morning... and the thought of that poor AI, web researching Weather APIs & writing a new python script to call the API every morning, instead of just doing the research once and making it a binary (or even just a curl line)... drove me crazy. All that wasted time and compute. Some people just like to watch tokens burn.