nexus-mcp — jpi-guard & PII Guard
Server Details
Two LLM security APIs for Japanese applications.
(1) jpi-guard — Prompt Injection Detection Detects and blocks prompt injection attacks before they reach your LLM. Specialized for Japanese: full-width character bypass (全角バイパス), polite-language disguise (丁寧語擬装), indirect injection, Base64 obfuscation.
(2) PII Guard — Japanese PII Detection & Masking Scans text for 10 PII categories.
- Status
- Unhealthy
- Last Tested
- Transport
- Streamable HTTP
- URL
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Tool Definition Quality
Average 4.3/5 across 6 of 6 tools scored.
Most tools have distinct purposes, but there is some overlap between check_injection, sanitize_content, and validate_rag_input, which all involve injection detection and content safety. The descriptions help differentiate them, but an agent might need to carefully choose between these three for similar tasks.
All tool names follow a consistent snake_case pattern with clear verb_noun structures, such as check_injection, get_pii_guard_key, pii_scan, sanitize_content, and validate_rag_input. This uniformity makes the set predictable and easy to navigate.
With 6 tools, the server is well-scoped for its purpose of security and PII handling in Japanese applications. Each tool serves a specific function, such as detection, scanning, sanitization, and key management, without unnecessary redundancy or gaps.
The tool set covers key areas like injection detection, PII scanning, content sanitization, and API key management, with minor gaps such as lacking tools for updating or revoking keys. However, the core workflows for securing LLM inputs in Japanese contexts are well-supported.
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