In this lesson, we integrate Ollama into our Vibe application by implementing HTTP communication with its API. We start by testing Ollama's `/api/generate` endpoint using curl to understand how it works, then build our own Go implementation using the standard library's `net/http` package. We create request and response structs for the JSON payloads, implement a `GenerateGitCommit` function that sends our git diff to the model, and handle the streaming/non-streaming responses appropriately. During implementation, we discover that the `raw` parameter needs to be set to `false` for proper operation, and we make several improvements to the code quality. We introduce type aliases for model names to avoid hard-coded strings, define constants for available models (like the tavernari/git-commit-message model), and add support for configuring the Ollama host via environment variables. By the end, we have a working integration that successfully generates commit messages from our staged changes, setting us up to integrate this with Git's commit workflow in the next lesson.