Google's Gemini Managed Agents adds a credentials API that keeps secrets out of the model context
Latent Space (swyx)·low signal
An update covered in Latent Space's September 17 AINews brings Gemini Managed Agents onto a new Antigravity-based harness with a Credentials API that keeps secrets out of model context entirely and a Files API for moving artifacts between steps. Google claims up to 30% lower costs and 22% higher cache hits from the harness change. The credentials design is the part builders should copy regardless of platform: the secret never enters the token stream, so a prompt injection cannot exfiltrate what the model never saw.