OpenRouter 推出 Tool Search：工具定义按需加载，省下输入 token
OpenRouter 出了个 Tool Search，函数标成 defer_loading 就能按需加载工具定义，不用每轮都为几百个工具定义付 token，还不加价。
OpenRouter 上线 Tool Search 功能。开发者把函数标记为 defer_loading 后，模型不再在每轮对话中加载全部工具定义，而是按需搜索调用所需的工具。
对于挂载数百个 MCP 工具的智能体，这项功能直接省去每轮重复支付的工具定义输入 token 费用，且官方声明不额外收费。功能说明页面已挂在 openrouter.
ai/tool/tool-search。
Tool search keeps large tool libraries out of the prompt. Mark your functions defer_loading and the model searches for the ones it needs, instead of paying input tokens for every definition on every turn. No extra charge. openrouter.ai/tool/tool-sear…📊 1 ⚡
This report is categorized under AITOP's "Products" desk, focusing on US frontier AI labs and Silicon Valley technology leaders. Within our cross-regional analytical framework, it directly maps to AI developer toolchains, coding agents, and engineering workflows and US-China foundation model benchmarks and commercialization comparison. Key entities and technical topics under continuous tracking include OpenRouter, MCP/工具, 智能体, 开发者工具.
Source attribution: curated from OpenRouter (@OpenRouterAI).
