Septor is a managed gateway for agent workloads. It routes each call to a healthy provider and fails over if that provider dies before the first token, so a dead host does not burn the turn. Repeat prompts can hit a semantic cache and bill at 70% of the completion. You pay prepaid credits, with a budget on each key and no per-seat fee. Agents that already speak the OpenAI API, and Claude-style clients on the Anthropic messages path, use one router.