How Sentience ships 60+ AI tools in one local desktop app — without locking you into one provider

I wanted Cursor's UX and Zo Computer's tool breadth in a desktop app I could close the laptop lid on. So I built Sentience — a PySide6 desktop AI assistant that runs entirely on your machine, brings its own browser, its own email client, its own voice controller, and exposes 60+ tool functions to the model.

The hard part was never the tools. The hard part was making 60+ tool schemas work identically across Groq, OpenAI, Anthropic, and a local Ollama instance — without writing a provider-specific tool dispatcher and without forcing the user to think about which model they happen to be on today.

This is the part of the codebase I'm actually proud of, and it's the part nobody ships as a tutorial.

The constraint

OpenAI's /v1/chat/completions format is now a de facto standard. Groq implements it. Ollama implements it. Localai implements it. So three out of four providers I wanted to support "just work" with one HTTP call — if you're willing to accept the OpenAI tool schema as ground truth.