@yantrix/mcp

Dynamic MCP server for the Yantrix API portfolio. One install gives any MCP-compatible AI agent access to 30+ tools across research, memory, language, legal, security, intelligence, and more.

What makes it dynamic

Unlike static MCP packages, @yantrix/mcp fetches its tool list from registry.yantrix.ai on startup. When new APIs are added to the Yantrix portfolio, they appear automatically on your next MCP host restart — no package update needed.

Install

npm install -g @yantrix/mcp

Or use directly with npx:

npx @yantrix/mcp

Configuration

Claude Desktop

Add to ~/Library/Application Support/Claude/claude_desktop_config.json:

{
  "mcpServers": {
    "yantrix": {
      "command": "npx",
      "args": ["@yantrix/mcp"],
      "env": {
        "X_PAYMENT_HEADER": "<your-x402-payment-proof>",
        "DEV_MODE": "false"
      }
    }
  }
}

Development / Testing (no payment required)

{
  "mcpServers": {
    "yantrix": {
      "command": "npx",
      "args": ["@yantrix/mcp"],
      "env": {
        "DEV_MODE": "true"
      }
    }
  }
}

Environment Variables

| Variable | Description | Default | |---|---|---| | X_PAYMENT_HEADER | x402 payment proof for USDC micropayments | — | | DEV_MODE | Skip payment validation (local testing only) | false | | YANTRIX_REGISTRY_URL | Custom registry URL | https://registry.yantrix.ai/mcp-registry.json |

Available Tools

Tools are loaded dynamically from the registry. Current categories:

| Category | Tools | |---|---| | research | verify_claim, deep_verify_claim, batch_verify | | memory | write_memory, read_memory, search_memory | | language | transliterate, indic_sentiment, detect_code_switching, indic_ner | | legal | scan_contract, scan_clause | | security | model_threats, check_compliance | | intelligence | score_trend, compare_trends, scan_competitor | | education | generate_exam | | content | rewrite_in_style | | india | company_lookup, gst_intelligence, lookup_ifsc | | sales | analyze_call, extract_crm_data | | utility | validate_phone, detect_timezone, convert_timezone, find_timezone_overlap | | infrastructure | check_quota, consume_quota, track_api_event | | reasoning | argue_claim, detect_fallacies |

Payment

All tools use x402 micropayments in USDC on Base Mainnet.

Costs range from $0.0001 (event tracking) to $0.025 (sales call analysis).

To get a payment header, visit x402.org or use the x402 client SDK.

How it works

1. npx @yantrix/mcp starts
2. Fetches https://registry.yantrix.ai/mcp-registry.json
3. Registers all tools dynamically
4. MCP host calls any tool
5. @yantrix/mcp routes call to correct Yantrix API
6. Response returned to agent

The registry is cached for 5 minutes. New tools appear on next restart.

Adding new APIs (for maintainers)

No npm republish needed. Just update main.py in the mcp-registry service:

# Add to TOOLS list in mcp-registry/main.py
{
    "name": "new_tool_name",
    "service": "newapi",
    "endpoint": "https://newapi.yantrix.ai/endpoint",
    "method": "POST",
    "description": "What this tool does.",
    "input_schema": {...},
    "cost_usdc": "0.005",
    "category": "category",
}

Deploy the registry → all users get the new tool on next restart.

Links

• Registry: https://registry.yantrix.ai
• Docs: https://yantrix.ai
• x402: https://x402.org