nexus-mcp — jpi-guard & PII Guard MCP Server

What is nexus-mcp — jpi-guard & PII Guard?

nexus-mcp — jpi-guard & PII Guard is an MCP server that protects LLM pipelines from prompt injection and PII leaks. It provides Japanese‑aware security tools for developers and operators.

How to use nexus-mcp — jpi-guard & PII Guard?

Add the following configuration to your MCP client and connect. No API key is required to start; a free trial of 2,000 requests is included. Use the provided tools (e.g., check_injection, pii_scan) via the MCP interface.

{
  "mcpServers": {
    "nexus-mcp": {
      "url": "https://mcp.nexus-api-lab.com/mcp"
    }
  }
}

Key features of nexus-mcp — jpi-guard & PII Guard

• Detect prompt injection in Japanese and English
• Validate RAG user input before LLM processing
• Sanitize external content before prompt injection
• Detect and mask 10 categories of PII (Japanese‑aware)
• Issue free trial API keys (2,000 requests)
• Issue separate PII Guard trial keys

Use cases of nexus-mcp — jpi-guard & PII Guard

• Prevent prompt injection attacks in multilingual chat applications
• Ensure RAG pipelines receive safe, validated user queries
• Sanitize scraped or third‑party content before feeding to an LLM
• Mask personally identifiable information in Japanese text before storage or logging
• Rapidly prototype security‑hardened LLM workflows with a free trial key