OpenRouter Armor uses Jev to block out-of-policy tool calls

OpenRouter @OpenRouterOriginally posted 2026.10.16

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Today, we are launching OpenRouter Armor in beta. Tool calls allow agents to interact with the world, and regex-based filtering often isn't enough to detect unwanted tool calls. Armor uses @typesafeai's Jev model to guard against out of policy tool calls before your agent executes them, with better performance than Claude Code's auto classifier at a fraction of the cost.