Amazon Science introduces Turnstile: a Rust proxy for capturing token IDs during agentic interactions

Jul 10, 2026

Amazon Science has developed Turnstile, a Rust proxy that sits between the model backend and the agent harness to capture information that is lost in plain text transcripts during agentic interactions. This enables the preservation of token IDs, which can support improved reinforcement learning.

Why it matters: Capturing token IDs directly provides richer data for reinforcement learning in agentic systems, potentially enhancing model training.

Full story at: Amazon Science ↗