nexus-mcp — jpi-guard & PII Guard

@nexus-api-lab

About nexus-mcp — jpi-guard & PII Guard

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

#security #prompt-injection #japanese #llm #rag #pii #ai-safety

Config

Add this server to your MCP-compatible client using the configuration below.

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

Tools

Detect prompt injection attacks (Japanese + English)

Validate RAG user input before passing to LLM

Sanitize external content before injection into prompts

Detect and mask PII (10 categories, Japanese-aware)

Issue a free trial API key (2,000 requests)

Issue a PII Guard trial key

Overview

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

FAQ from nexus-mcp — jpi-guard & PII Guard

What tools does the server provide?

Six tools: check_injection, validate_rag_input, sanitize_content, pii_scan, get_trial_key, and get_pii_guard_key. Each is described in the README.

Do I need an API key to start?

No. The server works without an initial API key; a free trial of 2,000 requests is available.

What languages are supported for injection and PII detection?

Prompt injection detection supports Japanese and English. PII scanning is Japanese‑aware.

How do I obtain a trial key?

Use the get_trial_key tool to issue a free trial key (2,000 requests) or get_pii_guard_key for a PII Guard trial key.

Where can I learn more

Frequently asked questions

What tools does the server provide?

Six tools: `check_injection`, `validate_rag_input`, `sanitize_content`, `pii_scan`, `get_trial_key`, and `get_pii_guard_key`. Each is described in the README.

Do I need an API key to start?

No. The server works without an initial API key; a free trial of 2,000 requests is available.

What languages are supported for injection and PII detection?

Prompt injection detection supports Japanese and English. PII scanning is Japanese‑aware.

How do I obtain a trial key?

Use the `get_trial_key` tool to issue a free trial key (2,000 requests) or `get_pii_guard_key` for a PII Guard trial key.

Comments

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