When to Use

Use this tool when you need to get statistical information about field values.

this tool retrieves statistical information about the values of specified fields in the clinicaltrials.gov database.

input:

• field_names: a list of field names to get statistics for.
• field_types: a list of field types to filter by. example: ['enum', 'string']. This is part of the Clinical Trials provider on xpay✦.

MCP Connection

Connect to xpay✦ to access this tool (and 11+ others):

{
  "mcpServers": {
    "xpay": {
      "url": "https://mcp.xpay.sh/mcp?key=YOUR_API_KEY"
    }
  }
}

For Claude Code:

claude mcp add --transport http xpay "https://mcp.xpay.sh/mcp?key=YOUR_API_KEY"

How to Execute

Use the xpay✦ meta-tools to run this tool:

1. xpay_details — Get full input schema: xpay_details("clinical-trials/get_field_statistics")
2. xpay_run — Execute: xpay_run("clinical-trials/get_field_statistics", { ...inputs })

Input Parameters

Pricing

• Cost: $0.01/call
• Balance check: Use xpay_balance to check remaining credits
• Get your API key at xpay.tools — $5 free credits included

Related Skills

• Clinical Trials (all tools) — 12 tools
• Search Trials By Condition — $0.01/call
• Search Trials By Intervention — $0.01/call
• Search Trials By Sponsor — $0.01/call
• Search Trials By Acronym — $0.01/call
• Search Trials By Nct Ids — $0.01/call

Links

• Tool page: https://xpay.tools/clinical-trials/get-field-statistics/
• Provider: https://xpay.tools/clinical-trials/
• All tools: https://xpay.tools/explore