# x402stock Clinical Trials by Sponsor

> x402stock Clinical Trials by Sponsor is a paid API for AI agents from x402stock.xyz, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-21).

Returns clinical trial records from ClinicalTrials.gov filtered by sponsor name, including trial status, phases, conditions, enrollment, and dates.

## Facts

- Endpoint: GET https://x402stock.xyz/api/v1/clinical-trials?utm_source=zero.xyz
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402stock-clinical-trials-by-sponsor-b18a1ce7
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_9V7sGu-9dbj4RAyffGDJj

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 x402stock-clinical-trials-by-sponsor-b18a1ce7
```

Example prompt: Show me up to 50 clinical trials sponsored by Vertex Pharmaceuticals — I want to see their trial statuses, phases, and conditions being studied.

## When to prefer this

Use this endpoint when you need to programmatically retrieve clinical trial data for a specific pharmaceutical, biotech, or research institution sponsor without setting up an API key or account. Ideal for AI agents doing competitive intelligence, drug pipeline research, or financial analysis of pharma companies, paying per call in USDC via x402 on Base with no subscription required.

## Known failure modes

- Missing required `sponsor` parameter returns validation error
- Missing required `limit` parameter returns validation error
- Sponsor name with fewer than 2 characters rejected
- Limit exceeding 100 rejected
- Unknown or misspelled sponsor name returns empty trials array with total_matched of 0
- Payment failure via x402/USDC results in 402 response before data is returned

## How this service works

Clinical trials run by a company, from ClinicalTrials.gov, newest first. Pass `?sponsor=Vertex Pharmaceuticals` (required) plus `?limit=` (max 100). Each trial carries NCT id, title, status, phase(s), study type, conditions, enrollment, lead sponsor, and start/completion/update dates with a link. A primary biotech catalyst. From x402stock, a market & economic data API (x402, USDC).

## Output

A JSON object containing the sponsor name queried, total matched trial count, a list of up to `limit` trial records each with NCT ID, title, status, phases, conditions studied, enrollment number, lead sponsor, sponsor class, start/completion dates, last update date, and a direct ClinicalTrials.gov URL. Also includes an as_of timestamp and attribution to NIH/ClinicalTrials.gov.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "$schema": "https://json-schema.org/draft/2020-12/schema",
     "required": [
      "limit"
     ],
     "properties": {
      "limit": {
       "type": "integer",
       "default": 20,
       "maximum": 100,
       "exclusiveMinimum": 0
      },
      "sponsor": {
       "type": "string",
       "maxLength": 120,
       "minLength": 2
      }
     },
     "additionalProperties": {}
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "$schema": "https://json-schema.org/draft/2020-12/schema",
     "required": [
      "source",
      "as_of",
      "sponsor",
      "total_matched",
      "count",
      "trials",
      "attribution"
     ],
     "properties": {
      "as_of": {
       "type": "string"
      },
      "count": {
       "type": "number"
      },
      "source": {
       "type": "string",
       "const": "clinicaltrials_gov"
      },
      "trials": {
       "type": "array",
       "items": {
        "type": "object",
        "required": [
         "nct_id",
         "title",
         "status",
         "phases",
         "study_type",
         "conditions",
         "enrollment",
         "lead_sponsor",
         "sponsor_class",
         "start_date",
         "primary_completion_date",
         "completion_date",
         "last_update",
         "url"
        ],
        "properties": {
         "url": {
          "anyOf": [
           {
            "type": "string"
           },
           {
            "type": "null"
           }
          ]
         },
         "title": {
          "anyOf": [
           {
            "type": "string"
           },
           {
            "type": "null"
           }
          ]
         },
         "nct_id": {
          "anyOf": [
           {
            "type": "string"
           },
           {
            "type": "null"
           }
          ]
         },
         "phases": {
          "t
… (truncated)
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "as_of": "2026-06-18T12:00:00.000Z",
  "count": 1,
  "source": "clinicaltrials_gov",
  "trials": [
   {
    "url": "https://clinicaltrials.gov/study/NCT07654296",
    "title": "Assessing Suzetrigine for Pain Reduction Following Ureteroscopic Surgery",
    "nct_id": "NCT07654296",
    "phases": [
     "PHASE3"
    ],
    "status": "NOT_YET_RECRUITING",
    "conditions": [
     "Opioid Consumption, Postoperative",
     "Ureteroscopy"
    ],
    "enrollment": 100,
    "start_date": "2026-08-01",
    "study_type": "INTERVENTIONAL",
    "last_update": "2026-06-17",
    "lead_sponsor": "Brigham and Women's Hospital",
    "sponsor_class": "OTHER",
    "completion_date": "2027-03-31",
    "primary_completion_date": "2026-12-31"
   }
  ],
  "sponsor": "Vertex Pharmaceuticals",
  "attribution": "Source: ClinicalTrials.gov, U.S. National Library of Medicine (NIH)",
  "total_matched": 285
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402stock-clinical-trials-by-sponsor-b18a1ce7/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402stock.xyz](https://www.zero.xyz/host/x402stock.xyz/llms.txt)