English(EN) We found 331 MCP tool-list changes in one week that only moved a date. Each one costs a prompt-cache write

Anthropic 工具定义中的微小日期更改增加了提示缓存成本

作者 PulseAugur 编辑部 · [1 个来源] · 2026-11-03 03:00

对 Anthropic 工具定义日志的最新分析显示，存在大量不必要的更改，这些更改对提示缓存效率产生了负面影响。在一周内记录的 10,000 多项更改中，有 331 项仅更改了日期或时间戳，但并未改变工具的功能。这种情况的发生是因为对工具定义的任何修改，无论多么微小，都会使整个提示缓存失效，从而导致后续请求成本增加。该问题源于多种原因，包括自动更新当前日期、新鲜度标记以及服务器启动时设置的默认值的工具。 AI

影响工具定义中不必要的日期更改会增加 API 成本，并降低依赖提示缓存的 AI 应用程序的效率。

排序理由对 AI 提供商 API 中特定技术低效率的分析。

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Signal score: 6 / 100; Composite score across the factors below. Higher = stronger signal that this story matters right now.
Newsworthiness bucket: Tool; 对 AI 提供商 API 中特定技术低效率的分析。
Source corroboration: Single-source cluster; Only one publisher covered this so far. Single-source stories can still rank when the publisher is high-authority, but they lack cross-source corroboration.
Topics: infra, product; Editorial topic classification. Feeds into how the story surfaces on /topic/<slug> hub pages and into the per-entity coverage mix.
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Story freshness: Same-day; Cluster formed today. Ranking reflects the current source set at time of score.

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dev.to — MCP tag TIER_1 English(EN) · Alex · 2026-11-03 03:00

We found 331 MCP tool-list changes in one week that only moved a date. Each one costs a prompt-cache write

<p>A reader of our last post, Paul Irolla, who builds a token optimizer for coding agents, pointed out something we had only looked at as a correctness problem. A model request starts with the tool list. Change one byte of a tool definition and every prompt cache built on that re…

本文如何被排名

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We found 331 MCP tool-list changes in one week that only moved a date. Each one costs a prompt-cache write

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