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nexus-mcp — jpi-guard & PII Guard

@nexus-api-lab

Japanese LLM security APIs — prompt injection detection (jpi-guard) + PII masking (PII Guard). Free to start, no credit card required.
Overview

nexus-mcp — Japanese LLM Security APIs

Protect your LLM pipelines from prompt injection and PII leaks.

Tools

ToolDescription
check_injectionDetect prompt injection attacks (Japanese + English)
validate_rag_inputValidate RAG user input before passing to LLM
sanitize_contentSanitize external content before injection into prompts
pii_scanDetect and mask PII (10 categories, Japanese-aware)
get_trial_keyIssue a free trial API key (2,000 requests)
get_pii_guard_keyIssue a PII Guard trial key

Quick Start

Add to your MCP client config:

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

No API key required to start. Free trial: 2,000 requests.

Server Config

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