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Prompt-caching – auto-injects Anthropic cache breakpoints (90% token savings)
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Overview
Open source MCP plugin that automatically injects prompt cache breakpoints into Claude Code sessions. Up to 90% token cost reduction — zero config.
Summary from prompt-caching.ai.
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Hacker News · prompt-caching.ai
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Historical count: 5 · 5 saved in sample · Historical sample
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Based on 5 sampled comments from this thread. Analyzed 2026-03-13.
- Praise: The auto-caching feature introduced by Anthropic significantly simplifies the process for developers, allowing for efficient breakpoint placement without manual intervention.
- Praise: Reducing token usage by 90% through prompt-caching can lead to substantial cost savings, making AI applications more accessible for developers.
- Praise: Claude Code's built-in prompt caching enhances user experience by automatically managing system prompts and conversation history, streamlining development.
- Concern: The plugin discussed is outdated and does not provide any incremental benefits over the existing auto-caching feature from Anthropic, which diminishes its relevance.
- Concern: Despite initial perceptions, Sonnet is not cheaper than Opus when considering output token costs, highlighting potential marketing discrepancies that can mislead users.