# Suverse ClinicalTrials.gov Search

> Suverse ClinicalTrials.gov Search is a paid API for AI agents from proxy.suverse.io, paid per call via x402, $0.004/call, status unknown (last checked 2026-09-13).

Searches ClinicalTrials.gov studies by keyword via the official v2 API and returns matching studies with NCT IDs, titles, statuses, and conditions.

## Facts

- Endpoint: POST https://proxy.suverse.io/v1/data/suverse-clinicaltrials-search
- Price: $0.004/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/suverse-clinicaltrials-gov-search-a3753b25
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap__F_oM7m7Ybf59ac8pb3Yx

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability suverse-clinicaltrials-gov-search-a3753b25 -d '<json body>'
```

Example prompt: Search ClinicalTrials.gov for studies related to 'non-small cell lung cancer' and show me the NCT IDs, titles, statuses, and conditions for the top matches.

## When to prefer this

Use this endpoint when you need to search ClinicalTrials.gov programmatically without obtaining your own API key, especially in agentic workflows for clinical research, pharma intelligence, or patient matching. It is ideal for quick keyword-based lookups returning structured trial metadata. Prefer this over building a direct ClinicalTrials.gov integration when you want a low-friction, pay-per-call approach with no credential management.

## Known failure modes

- No studies found for the given search term — returns empty results list
- ClinicalTrials.gov upstream API is unavailable — proxy returns a 5xx error
- Malformed or missing request body — returns 400 bad request
- Rate limiting or payment failure — returns 402 or 429 status
- Overly broad search term returns too many results to be useful

## How this service works

Search ClinicalTrials.gov studies by term via the official v2 API, no key. Returns matching studies with NCT id, title, status, and conditions. For AI agents in clinical research, pharma intelligence, and patient matching.

## Output

Returns a list of matching clinical trial studies from ClinicalTrials.gov, each including the NCT ID (e.g. NCT04123456), official study title, current status (e.g. Recruiting, Completed, Active), and associated conditions being studied.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method",
    "bodyType",
    "body"
   ],
   "properties": {
    "body": {
     "properties": {}
    },
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "POST",
      "PUT",
      "PATCH"
     ],
     "type": "string"
    },
    "bodyType": {
     "enum": [
      "json",
      "form-data",
      "text"
     ],
     "type": "string"
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/suverse-clinicaltrials-gov-search-a3753b25/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from proxy.suverse.io](https://www.zero.xyz/host/proxy.suverse.io/llms.txt)