Crate tt_provider_gemini 

Google Gemini provider adapter.

Implements tt_shared::Provider for Google Gemini’s generateContent and streamGenerateContent endpoints. Non-streaming and streaming (SSE via ?alt=sse) are both fully supported. Embeddings use separate Gemini embedding models and are not wired here; they return ProviderError::Unsupported.

Usage

use tt_provider_gemini::{GeminiProvider, ClientConfig};

let provider = GeminiProvider::new(ClientConfig::default());

API differences from OpenAI

• Model is in the URL path, not the request body.
• Auth is the x-goog-api-key request header (NOT a URL ?key= query param — keys in URLs leak via logs/proxies; see review §5.2).
• System messages map to systemInstruction.
• Tools use functionDeclarations inside a single tools object.
• Streaming uses SSE format with ?alt=sse.

Re-exports

pub use client::ClientConfig;

Modules

client

HTTP client configuration for the Gemini adapter.

errors

Maps HTTP status codes and Gemini error bodies to tt_shared::ProviderError.

pricing

Pricing table for Google Gemini models (May 2026 baseline).

stream

SSE parser and streaming chat completion for the Gemini adapter.

translate

Request/response translation for the Gemini adapter.

Structs

GeminiProvider

Stateless Gemini adapter. Holds an HTTP client and the static pricing table.