# ClinicalTrials.gov API: List company trials

> Lists ClinicalTrials.gov studies run or funded by a sponsor, newest start date first, with optional phase, status and condition filters.

Unofficial. Not affiliated with or endorsed by ClinicalTrials.gov.

- Page: https://fous.com/methods/clinicaltrials.gov/list-company-trials
- Method: `clinicaltrials.gov/list_company_trials`, version 1
- Website: clinicaltrials.gov
- Returns: trial title, NCT number, phase, status, conditions, start and primary completion dates, enrollment, study link
- Effect: read (it gets data and changes nothing)
- Sign-in: none needed
- Cost: 1 credit per completed run (1¢ with pay as you go); failed runs are free
- Verified: Nov 2, 2026

## Inputs

| Field | Type | Required | In the run below | Description |
|---|---|---|---|---|
| `phase` | string | no |  | Study phase to include, such as phase_3; any includes all phases. One of "any", "phase_1", "phase_2", "phase_3", "phase_4". Default "any". |
| `status` | string | no |  | Study recruitment status, such as recruiting; any includes all statuses. One of "any", "recruiting", "active_not_recruiting", "completed". Default "any". |
| `sponsor` | string | yes | `"Pfizer"` | Company or organization sponsoring or collaborating on studies, such as Pfizer. |
| `condition` | string | no |  | Condition to match, such as obesity. |
| `max_results` | integer | no |  | Maximum number of studies to return, such as 50 (up to 200). Default 50. |

## Output

From a run on Oct 23, 2026, shortened. Its input:

```json
{
  "sponsor": "Pfizer"
}
```

Its output:

```json
{
  "trials": [
    {
      "phase": null,
      "status": "Withdrawn",
      "conditions": [
        "Breast Neoplasms"
      ],
      "start_date": "2027-06-01",
      "trial_link": "https://clinicaltrials.gov/study/NCT04982848",
      "trial_title": "Korea Post Marketing Surveillance (PMS) Study of Talzenna®",
      "trial_number": "NCT04982848",
      "number_of_participants": 0,
      "primary_completion_date": "2028-11-01"
    },
    {
      "phase": "Phase 3",
      "status": "Not yet recruiting",
      "conditions": [
        "Atopic Dermatitis"
      ],
      "start_date": "2027-05-01",
      "trial_link": "https://clinicaltrials.gov/study/NCT07823595",
      "trial_title": "Abrocitinib Treatment of Atopic Dermatitis in Children 2 to Less Than 6 Years of Age",
      "trial_number": "NCT07823595",
      "number_of_participants": 90,
      "primary_completion_date": "2029-04-10"
    },
    {
      "phase": null,
      "status": "Not yet recruiting",
      "conditions": [
        "Migraine With or Without Aura"
      ],
      "start_date": "2027-03-01",
      "trial_link": "https://clinicaltrials.gov/study/NCT07497854",
      "trial_title": "A Study to Learn About the Study Medicine NURTEC® ODT 75 mg After it is Released Into the Markets in Korea",
      "trial_number": "NCT07497854",
      "number_of_participants": 3000,
      "primary_completion_date": "2030-07-31"
    }
  ]
}
```

## Run it

From code, with a Fous API key in `FOUS_API_KEY`; the answer's `data` holds the output:

```bash
curl https://api.fous.com/v1/runs \
  -H "Authorization: Bearer $FOUS_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"method":"clinicaltrials.gov/list_company_trials","input":{"sponsor":"Pfizer"}}'
```

From an AI agent connected to the Fous MCP server: its `run` with the same method and input. To connect one, give it `set up https://fous.com/SKILL.md`.

## Ask your agent

- Show me the newest Phase 3 trials sponsored by Novartis that are currently recruiting, with NCT numbers and enrollment.
- List up to 25 completed Phase 2 studies funded by Moderna covering vaccines, including their start and primary completion dates.
- Find active, not recruiting trials from AstraZeneca related to asthma, newest first.
- Which studies has Eli Lilly sponsored for diabetes across all phases and statuses? Give me the first 100 with study links.
- I need Phase 1 and Phase 4 trials on clinicaltrials.gov where Genentech is a collaborator and the condition is breast cancer, limited to 40 results.

## Input schema

```json
{
  "type": "object",
  "required": [
    "sponsor"
  ],
  "properties": {
    "phase": {
      "enum": [
        "any",
        "phase_1",
        "phase_2",
        "phase_3",
        "phase_4"
      ],
      "type": "string",
      "default": "any",
      "description": "Study phase to include, such as phase_3; any includes all phases."
    },
    "status": {
      "enum": [
        "any",
        "recruiting",
        "active_not_recruiting",
        "completed"
      ],
      "type": "string",
      "default": "any",
      "description": "Study recruitment status, such as recruiting; any includes all statuses."
    },
    "sponsor": {
      "type": "string",
      "minLength": 1,
      "description": "Company or organization sponsoring or collaborating on studies, such as Pfizer."
    },
    "condition": {
      "type": "string",
      "description": "Condition to match, such as obesity."
    },
    "max_results": {
      "type": "integer",
      "default": 50,
      "maximum": 200,
      "minimum": 1,
      "description": "Maximum number of studies to return, such as 50 (up to 200)."
    }
  }
}
```

## Output schema

```json
{
  "type": "object",
  "required": [
    "trials"
  ],
  "properties": {
    "trials": {
      "type": "array",
      "items": {
        "type": "object",
        "required": [
          "trial_title",
          "trial_number",
          "phase",
          "status",
          "conditions",
          "start_date",
          "primary_completion_date",
          "number_of_participants",
          "trial_link"
        ],
        "properties": {
          "phase": {
            "type": [
              "string",
              "null"
            ],
            "description": "Study phase or phases in words."
          },
          "status": {
            "type": [
              "string",
              "null"
            ],
            "description": "Overall study status in words."
          },
          "conditions": {
            "type": "array",
            "items": {
              "type": "string"
            },
            "description": "Conditions studied."
          },
          "start_date": {
            "type": [
              "string",
              "null"
            ],
            "description": "Start date as YYYY-MM-DD when the day is known."
          },
          "trial_link": {
            "type": "string",
            "description": "ClinicalTrials.gov study page."
          },
          "trial_title": {
            "type": [
              "string",
              "null"
            ],
            "description": "Public study title."
          },
          "trial_number": {
            "type": "string",
            "description": "NCT study number."
          },
          "number_of_participants": {
            "type": [
              "integer",
              "null"
            ],
            "description": "Enrolled or planned number of participants."
          },
          "primary_completion_date": {
            "type": [
              "string",
              "null"
            ],
            "description": "Primary completion date as YYYY-MM-DD when the day is known."
          }
        },
        "additionalProperties": false
      },
      "description": "Matching trials sorted by start date, newest first."
    }
  },
  "additionalProperties": false
}
```

## See more

- [ClinicalTrials.gov API: Search clinical trials](https://fous.com/methods/clinicaltrials.gov/search-trials.md): Finds ClinicalTrials.gov studies for a condition or medicine. You can filter by location, distance, recruitment status and phase. With a location, results are ordered by distance to the closest eligible site.
- [ClinicalTrials.gov API: Get clinical trial by NCT number or title](https://fous.com/methods/clinicaltrials.gov/get-trial.md): Returns the full public record of a ClinicalTrials.gov study, looked up by NCT number or by title (closest registered title for ambiguous titles).
- [FDA API: Search drug recalls](https://fous.com/methods/open.fda.gov/search-drug-recalls.md): Finds FDA drug enforcement recalls by medicine or company name, newest first, with status, class, reason and quantity. Recent recalls may not yet appear.
- [NIH API: Search grants](https://fous.com/methods/reporter.nih.gov/search-grants.md): Finds NIH research grants by topic, organisation, or researcher name. Searches the last five fiscal years by default.
- [NIH API: Search PubMed articles](https://fous.com/methods/pubmed.ncbi.nlm.nih.gov/search-articles.md): Finds PubMed medical and life-science articles by topic, with publication details and free full-text links when PubMed confirms them.
- [FDA API: Search medical device recalls](https://fous.com/methods/fda.gov/search-device-recalls.md): Finds FDA medical device recalls whose product description or recalling company matches a phrase, newest first, with the recall class and its health-risk meaning from each FDA recall page. An optional start date limits recalls to those initiated on or after it.
- [SEC EDGAR API: List company SEC filings](https://fous.com/methods/sec.gov/get-company-filings.md): Finds a public company by name or ticker in SEC EDGAR and lists its filings, newest first, optionally narrowed by filing type and filing date.
- [FDA API: Search food recalls](https://fous.com/methods/open.fda.gov/search-food-recalls.md): Finds FDA food recall enforcement reports by product, brand, or allergen, newest first. Reports are updated weekly and recall statuses may lag.
- [All ClinicalTrials.gov methods](https://fous.com/methods/clinicaltrials.gov.md)