Clinical Trial Record by NCT Number (ClinicalTrials.gov)

clinicaltrials/study

One clinical study's ClinicalTrials.gov registry record by NCT number: titles, overall status and why it stopped, start, primary-completion and completion dates (each marked ACTUAL or ESTIMATED, month-only when the day is unknown), lead sponsor and collaborators, conditions, interventions, phase, design, enrollment, who may take part (sex, minimum and maximum age as text such as 18 Years, healthy volunteers), the date it was last updated and whether results are posted. An ESTIMATED date can already be in the past on a study nobody has updated. Returns registry facts only: no descriptions, eligibility criteria text, results, site list or contacts. Attribution: Source: ClinicalTrials.gov, a database of the U.S. National Library of Medicine, National Institutes of Health. Data fields selected, no values changed. Served by Eden Engine; not an official ClinicalTrials.gov product.

activeper callv2

Price

$0.0026 per call

You pay the price shown. If a call turns out to cost more than its quote, you pay the actual price, capped at twice the quote. No monthly minimum. Top-ups start at $5.

Data source

ClinicalTrials.gov

Source: ClinicalTrials.gov, a database of the U.S. National Library of Medicine, National Institutes of Health. Data processed by ClinicalTrials.gov, refreshed each weekday; each study carries its last-update date and every call reads the live registry. A fixed subset of fields is returned and no value is changed. Some ClinicalTrials.gov data may be subject to third-party copyright; free-text descriptions, documents and results are not returned. Served by Eden Engine; not an official ClinicalTrials.gov product.

Use it

Five steps: search, inspect, learn, run, settle. No per-tool setup; your agent reaches this tool through the meta-tools it already has.

Connect once and your AI can find and run this tool, and any other it needs.

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agent

// 1. search: find the tool
omnial_search({ query: "what you need" })

// 2. inspect: price and input schema
omnial_inspect({ tool: "clinicaltrials/study" })

// 3. learn: read the usage guide at runtime
omnial_learn({ tool: "clinicaltrials/study" })

// 4. run: price the exact call first, then run it
omnial_execute({ tool: "clinicaltrials/study", input: { /* see input_schema */ }, dry_run: true })
omnial_execute({ tool: "clinicaltrials/study", input: { /* ... */ } })

// 5. settle: the call is charged when it finishes, nothing to do

Not connected yet? Point your MCP client at https://mcp.eden-engine.com/mcp, then copy a config for your client.

Pricing

Every charge this tool can incur.

Charge	Price
Per call	$0.0026

Updated: Oct 20, 2026

Input and output schemas

Input schema

input_schema.json

{
  "type": "object",
  "required": [
    "nct_id"
  ],
  "properties": {
    "nct_id": {
      "type": "string",
      "pattern": "^NCT[0-9]{8}$",
      "description": "The study's NCT number: NCT followed by eight digits, for example NCT04280705. A search result's identificationModule.nctId is one."
    }
  },
  "additionalProperties": false
}

Output schema

output_schema.json

{
  "type": "object",
  "required": [
    "protocolSection"
  ],
  "properties": {
    "hasResults": {
      "type": "boolean",
      "description": "True when the sponsor has posted results on ClinicalTrials.gov. The results themselves are not returned."
    },
    "protocolSection": {
      "type": "object",
      "description": "The study record: identificationModule (nctId, briefTitle, officialTitle, acronym), statusModule (overallStatus, whyStopped, statusVerifiedDate, startDateStruct, primaryCompletionDateStruct, completionDateStruct, studyFirstPostDateStruct, resultsFirstPostDateStruct, lastUpdatePostDateStruct), sponsorCollaboratorsModule (leadSponsor, collaborators), conditionsModule (conditions), designModule (studyType, phases, designInfo, enrollmentInfo), armsInterventionsModule (interventions with type and name) and eligibilityModule (sex, minimumAge, maximumAge, stdAges, healthyVolunteers). A module or key is absent when the study has nothing to put there. A date is YYYY-MM-DD or YYYY-MM, and a struct's type is ACTUAL, ESTIMATED or absent.",
      "additionalProperties": true
    }
  },
  "description": "One study in ClinicalTrials.gov's own structure.",
  "additionalProperties": true
}