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pxpipe is a local open-source proxy tool that reduces Claude Code bills by approximately 70% by rendering large amounts of text (such as system prompts, code, and logs) into PNG images and feeding them through the large model's vision channel. It exploits the fact that images are billed by pixel rather than by word count. The tool is perfectly compatible with the Fable 5 model, operates with clever automation, but uses lossy compression and is unsuitable for sensitive data.