# Suverse ClinicalTrials.gov Study Lookup

> Suverse ClinicalTrials.gov Study Lookup is a paid API for AI agents from proxy.suverse.io, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-16).

Fetches the full protocol record for a single ClinicalTrials.gov study by NCT identifier, returning status, sponsors, eligibility criteria, and outcomes via the v2 API.

## Facts

- Endpoint: POST https://proxy.suverse.io/v1/data/suverse-clinicaltrials-study
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-16
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/suverse-clinicaltrials-gov-study-lookup-024073e3
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_ba7AItG2mVPbF-xJEYHu8

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-study-lookup-024073e3 -d '<json body>'
```

Example prompt: Pull the full ClinicalTrials.gov record for NCT04280705 — I need the protocol, eligibility criteria, sponsors, and primary outcomes.

## When to prefer this

Use this endpoint when you need the complete, authoritative record for a single known clinical trial by its NCT identifier — including protocol, eligibility, sponsors, and outcomes — without needing a ClinicalTrials.gov API key. Prefer this over general search endpoints when you already have the NCT ID and need deep structured data for agent analysis, patient screening, or research workflows.

## Known failure modes

- Invalid or non-existent NCT ID returns an error or empty result
- Malformed request body missing required fields returns a 400-level error
- ClinicalTrials.gov v2 API upstream outage causes failure
- NCT study that has been removed or merged may not return results
- Payment not received or insufficient USDC results in 402 rejection

## How this service works

Full record for a single ClinicalTrials.gov study by NCT identifier via the v2 API, no key. Returns the protocol, status, sponsors, eligibility, and outcomes. For AI agents deep reading a specific trial.

## Output

A full structured record from ClinicalTrials.gov v2 for the requested NCT study, including the protocol (design, arms, interventions), current recruitment status, sponsor and collaborator information, eligibility criteria (inclusion/exclusion), and primary and secondary outcome measures.

## 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-study-lookup-024073e3/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)