---
name: "xpay-clinical-trials-search-trials-nct-ids-only"
description: "Lightweight search returning only NCT IDs and minimal metadata for discovery.

This tool performs a lightweight search that returns only the NCT IDs and minimal metadata 
for the purpose of discovering relevant trials.

Input:
  - `conditions`: A list of medical conditions to search for.
  - `interventions`: A list of interventions or treatments to search for.
  - `sponsors`: A list of sponsor organizations to search for.
  - `terms`: A list of general search terms.
  - `max_studies`: The maximum number of studies to return. Defaults to 100."
version: "1.0.0"
price: "$0.01/call"
provider: "Clinical Trials"
---

# Search Trials Nct Ids Only

Lightweight search returning only NCT IDs and minimal metadata for discovery.

This tool performs a lightweight search that returns only the NCT IDs and minimal metadata 
for the purpose of discovering relevant trials.

Input:
  - `conditions`: A list of medical conditions to search for.
  - `interventions`: A list of interventions or treatments to search for.
  - `sponsors`: A list of sponsor organizations to search for.
  - `terms`: A list of general search terms.
  - `max_studies`: The maximum number of studies to return. Defaults to 100.

**Provider:** Clinical Trials
**Price:** $0.01/call
**Pricing model:** Flat rate per call

## When to Use

Use this tool when you need to lightweight search returning only nct ids and minimal metadata for discovery.

this tool performs a lightweight search that returns only the nct ids and minimal metadata 
for the purpose of discovering relevant trials.

input:
  - `conditions`: a list of medical conditions to search for.
  - `interventions`: a list of interventions or treatments to search for.
  - `sponsors`: a list of sponsor organizations to search for.
  - `terms`: a list of general search terms.
  - `max_studies`: the maximum number of studies to return. defaults to 100.. This is part of the Clinical Trials provider on xpay✦.

## MCP Connection

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

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

For Claude Code:
```bash
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/search_trials_nct_ids_only")`
2. **`xpay_run`** — Execute: `xpay_run("clinical-trials/search_trials_nct_ids_only", { ...inputs })`

## Input Parameters

| Parameter | Type | Required | Description |
|-----------|------|----------|-------------|
| `max_studies` | integer | No | Maximum number of studies to return (optimized for discovery) |
| `interventions` | string | No | Interventions/treatments to search for |
| `conditions` | string | No | Medical conditions to search for |
| `terms` | string | No | General search terms |
| `sponsors` | string | No | Sponsor organizations to search for |

## Pricing

- **Cost:** $0.01/call
- **Balance check:** Use `xpay_balance` to check remaining credits
- Get your API key at [xpay.tools](https://xpay.tools/account/settings/api-keys/) — $5 free credits included

## Related Skills

- [Clinical Trials (all tools)](https://xpay.tools/skills/clinical-trials/SKILL.md) — 12 tools
- [Search Trials By Condition](https://xpay.tools/skills/clinical-trials/search-trials-by-condition/SKILL.md) — $0.01/call
- [Search Trials By Intervention](https://xpay.tools/skills/clinical-trials/search-trials-by-intervention/SKILL.md) — $0.01/call
- [Search Trials By Sponsor](https://xpay.tools/skills/clinical-trials/search-trials-by-sponsor/SKILL.md) — $0.01/call
- [Search Trials By Acronym](https://xpay.tools/skills/clinical-trials/search-trials-by-acronym/SKILL.md) — $0.01/call
- [Search Trials By Nct Ids](https://xpay.tools/skills/clinical-trials/search-trials-by-nct-ids/SKILL.md) — $0.01/call

## Links

- Tool page: https://xpay.tools/clinical-trials/search-trials-nct-ids-only/
- Provider: https://xpay.tools/clinical-trials/
- All tools: https://xpay.tools/explore