🐛 🔒 Instructions requirements for MCP#41
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HanXHX
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May 15, 2026
HanXHX
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- It runs locally (prevent some issue when running in Windows while Claude thinks this MCP is a remote one)
- Never read local files
- It runs locally (prevent some issue when running in Windows while Claude thinks this MCP is a remote one) - Never read local files
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Pull request overview
Strengthens MCP tool descriptions to make explicit that the RETYC MCP server runs locally, performs in-process E2EE encryption/decryption, and that the calling LLM must not read or relay file contents. This addresses an issue where Claude treated the server as remote (causing path issues on Windows) and helps enforce zero-knowledge handling of files.
Changes:
- Expanded the MCP server's top-level description to specify local execution, post-quantum AGE encryption, and a strict zero-knowledge directive.
- Updated
transfer_send,transfer_download,dataroom_upload, anddataroom_downloadtool descriptions to reiterate local encryption/decryption and forbid the LLM from previewing files. - Augmented the
filesarray description fortransfer_sendto include the platform-specific absolute-path hint.
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