Get Available Fields
get_available_fieldsGet organized list of available fields for customizing search results.
How it works ↓Pricing
Per call
$0.01
Model
flat
Pay only for what you use. No subscriptions.
Inputs
category
stringInput Parameters
Cost per run
Execution cost$0.01
About Get Available Fields
Get organized list of available fields for customizing search results.
This tool provides a list of available fields that can be used to customize the results of other search tools. The fields are organized into categories.
Input:
category: An optional string to specify a category of fields to return. If not provided, all categories and default fields will be returned. Example:'conditions'
Frequently Asked Questions
Get organized list of available fields for customizing search results. This tool provides a list of available fields that can be used to customize the results of other search tools. The fields are organized into categories. Input: - `category`: An optional string to specify a category of fields to return. If not provided, all categories and default fields will be returned. Example: `'conditions'`
Get Available Fields costs $0.01 per call on xpay. No subscription, no minimums. Pay only for the calls you make. New accounts get $5 in free credits.
Connect the Clinical Trials MCP endpoint to your client — Claude Code: claude mcp add --transport http clinical-trials "https://clinical-trials.mcp.xpay.sh/mcp?key=YOUR_XPAY_KEY"; Cursor/Windsurf/Cline/VS Code: same URL in mcp.json. The agent will see get_available_fields as a callable tool with the input schema and run it directly. (Unified across all providers: https://mcp.xpay.sh/mcp?key=YOUR_XPAY_KEY, then xpay_run with toolPath clinical-trials/get_available_fields.)
Yes — that's exactly what xpay is for. You don't need a Clinical Trials account or API key. Sign up at xpay.tools (Google or email), get $5 free credit, and run Get Available Fields immediately. Billing flows through your xpay balance.
Get Available Fields accepts 1 input parameter: category. See the input schema and runnable form on this page for details and to test live.