Search and monitor ClinicalTrials.gov and EU trial registry records, with trial change tracking and
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Side-by-side registry attributes for 2 to 5 studies. A structural comparison only, never an efficacy or safety ranking.
Side-by-side registry attributes for 2 to 5 studies. A structural comparison only, never an efficacy or safety ranking.
| Argument | Type | Description |
|---|---|---|
| nct_ids* | array |
{
"type": "object",
"required": [
"nct_ids"
],
"properties": {
"nct_ids": {
"type": "array",
"items": {
"type": "string",
"pattern": "^NCT\\d{8}$"
},
"maxItems": 5,
"minItems": 2
}
},
"additionalProperties": false
}One study by NCT id: full structured record (status, dates, enrollment, eligibility text, sites and contacts, outcomes, documents), plus the changes AgentStructure has observed and data freshness.
| Argument | Type | Description |
|---|---|---|
| nct_id* | string | |
| max_locations | integer | |
| location_filter | object |
{
"type": "object",
"required": [
"nct_id"
],
"properties": {
"nct_id": {
"type": "string",
"pattern": "^NCT\\d{8}$"
},
"max_locations": {
"type": "integer",
"maximum": 200,
"minimum": 0
},
"location_filter": {
"type": "object",
"properties": {
"city": {
"type": "string",
"maxLength": 80,
"minLength": 1
},
"state": {
"type": "string",
"maxLength": 80,
"minLength": 1
},
"country": {
"type": "string",
"maxLength": 80,
"minLength": 1
}
},
"additionalProperties": false
}
},
"additionalProperties": false
}The change history AgentStructure recorded for a study: previous and new values, event type, dates and provenance. Starts monitoring the study if it was unknown.
| Argument | Type | Description |
|---|---|---|
| limit | integer | |
| since | string | |
| nct_id* | string | |
| event_types | array | |
| include_baseline | boolean |
{
"type": "object",
"required": [
"nct_id"
],
"properties": {
"limit": {
"type": "integer",
"maximum": 200,
"minimum": 1
},
"since": {
"type": "string",
"pattern": "^\\d{4}-\\d{2}-\\d{2}$"
},
"nct_id": {
"type": "string",
"pattern": "^NCT\\d{8}$"
},
"event_types": {
"type": "array",
"items": {
"enum": [
"STUDY_FIRST_OBSERVED",
"NEW_STUDY_REGISTERED",
"NEW_STUDY_MATCHED",
"NOT_RECRUITING_TO_RECRUITING",
"RECRUITING_TO_SUSPENDED",
"RECRUITMENT_CLOSED",
"STUDY_SUSPENDED",
"STUDY_TERMINATED",
"STUDY_WITHDRAWN",
"STUDY_COMPLETED",
"STATUS_CHANGED",
"NEW_SITE_ADDED",
"SITE_REMOVED",
"SITE_STATUS_CHANGED",
"ENROLLMENT_TARGET_CHANGED",
"ENROLLMENT_ACTUAL_REPORTED",
"START_DATE_REVISED",
"PRIMARY_COMPLETION_DATE_REVISED",
"COMPLETION_DATE_REVISED",
"DATE_CONFIRMED_ACTUAL",
"RESULTS_POSTED",
"PHASE_CHANGED",
"ELIGIBILITY_CHANGED",
"SPONSOR_CHANGED",
"COLLABORATORS_CHANGED",
"INTERVENTIONS_CHANGED",
"CONDITIONS_CHANGED",
"TITLE_CHANGED",
"STUDY_TYPE_CHANGED",
"FDA_RECALL_POSTED",
"FDA_APPROVAL_RECORDED",
"FDA_SUPPLEMENT_APPROVED",
"FDA_LABEL_UPDATED",
"PUBLICATION_LINKED"
],
"type": "string"
},
"maxItems": 40
},
"include_baseline": {
"type": "boolean"
}
},
"additionalProperties": false
}A source-linked brief on a study, sponsor, condition, intervention, or one of your watchlists: current facts, observed developments, unknowns, and freshness.
| Argument | Type | Description |
|---|---|---|
| value* | string | NCT id, sponsor, condition, intervention, or watchlist id |
| subject* | string |
{
"type": "object",
"required": [
"subject",
"value"
],
"properties": {
"value": {
"type": "string",
"maxLength": 200,
"minLength": 1,
"description": "NCT id, sponsor, condition, intervention, or watchlist id"
},
"subject": {
"enum": [
"study",
"sponsor",
"condition",
"intervention",
"watchlist"
],
"type": "string"
}
},
"additionalProperties": false
}Search ClinicalTrials.gov by condition, intervention, sponsor, phase, recruitment status, location, institution, study type or dates. Returns structured studies with source links and retrieval time.
| Argument | Type | Description |
|---|---|---|
| near | object | |
| phase | array | |
| query | string | Free-text search across the registry |
| nct_ids | array | |
| sponsor | string | Sponsor or collaborator name |
| location | string | Free-text place, e.g. 'Boston, Massachusetts' |
| condition | string | Disease or condition, e.g. multiple sclerosis |
| page_size | integer | |
| page_token | string | |
| study_type | string |
Search the EU Clinical Trials Information System (CTIS, euclinicaltrials.eu) by condition, medicine, sponsor or text, or get one trial by EU CT number (with its ClinicalTrials.gov link when listed). Experimental source.
| Argument | Type | Description |
|---|---|---|
| page | integer | |
| query | string | Free text across EU trial records |
| sponsor | string | |
| medicine | string | Medicine or active substance |
| condition | string | Medical condition |
| ct_number | string | Get one trial by EU CT number |
| page_size | integer |
{
"type": "object",
"properties": {
"page": {
"type": "integer",
"maximum": 100,
"minimum": 1
},
"query": {
"type": "string",
"maxLength": 200,
"minLength": 1,
"description": "Free text across EU trial records"
},
"sponsor": {
"type": "string",
"maxLength": 200,
"minLength": 1
},
"medicine": {
"type": "string",
"maxLength": 200,
"minLength": 1,
"description": "Medicine or active substance"
},
"condition": {
"type": "string",
"maxLength": 200,
"minLength": 1,
"description": "Medical condition"
},
"ct_number": {
"type": "string",
"pattern": "^\\d{4}-\\d{6}-\\d{2}-\\d{2}$",
"description": "Get one trial by EU CT number"
},
"page_size": {
"type": "integer",
"maximum": 50,
"minimum": 1
}
},
"additionalProperties": false
}Search openFDA: Drugs@FDA approvals (drug/drugsfda), recalls (drug/enforcement) or labeling (drug/label) by drug, firm, application number or date.
| Argument | Type | Description |
|---|---|---|
| drug | string | |
| firm | string | |
| limit | integer | |
| since | string | |
| until | string | |
| dataset* | string | drug/drugsfda = approvals; drug/enforcement = recalls; drug/label = labeling |
| application_number | string |
{
"type": "object",
"required": [
"dataset"
],
"properties": {
"drug": {
"type": "string",
"maxLength": 120,
"minLength": 1
},
"firm": {
"type": "string",
"maxLength": 120,
"minLength": 1
},
"limit": {
"type": "integer",
"maximum": 50,
"minimum": 1
},
"since": {
"type": "string",
"pattern": "^\\d{4}-\\d{2}-\\d{2}$"
},
"until": {
"type": "string",
"pattern": "^\\d{4}-\\d{2}-\\d{2}$"
},
"dataset": {
"enum": [
"drug/enforcement",
"drug/drugsfda",
"drug/label"
],
"type": "string",
"description": "drug/drugsfda = approvals; drug/enforcement = recalls; drug/label = labeling"
},
"application_number": {
"type": "string",
"pattern": "^(NDA|ANDA|BLA)\\d{6}$"
}
},
"additionalProperties": false
}| institution | string | Research site / facility name |
| intervention | string | Drug or other intervention name |
| start_date_to | string |
| updated_since | string |
| location_filter | object | Show only sites in this city/state/country in each result |
| start_date_from | string |
| first_posted_since | string |
| recruitment_status | array |
{
"type": "object",
"properties": {
"near": {
"type": "object",
"required": [
"latitude",
"longitude",
"radius_miles"
],
"properties": {
"latitude": {
"type": "number",
"maximum": 90,
"minimum": -90
},
"longitude": {
"type": "number",
"maximum": 180,
"minimum": -180
},
"radius_miles": {
"type": "number",
"maximum": 500,
"minimum": 1
}
},
"additionalProperties": false
},
"phase": {
"type": "array",
"items": {
"enum": [
"NA",
"EARLY_PHASE1",
"PHASE1",
"PHASE2",
"PHASE3",
"PHASE4"
],
"type": "string"
},
"maxItems": 6
},
"query": {
"type": "string",
"maxLength": 200,
"minLength": 1,
"description": "Free-text search across the registry"
},
"nct_ids": {
"type": "array",
"items": {
"type": "string",
"pattern": "^NCT\\d{8}$"
},
"maxItems": 50,
"minItems": 1
},
"sponsor": {
"type": "string",
"maxLength": 200,
"minLength": 1,
"description": "Sponsor or collaborator name"
},
"location": {
"type": "string",
"maxLength": 200,
"minLength": 1,
"description": "Free-text place, e.g. 'Boston, Massachusetts'"
},
"condition": {
"type": "string",
"maxLength": 200,
"minLength": 1,
"description": "Disease or condition, e.g. multiple sclerosis"
},
"page_size": {
"type": "integer",
"maximum": 50,
"minimum": 1
},
"page_token": {
"type": "string",
"maxLength": 500
},
"study_type": {
"enum": [
"INTERVENTIONAL",
"OBSERVATIONAL",
"EXPANDED_ACCESS"
],
"type": "string"
},
"institution": {
"type": "string",
"maxLength": 200,
"minLength": 1,
"description": "Research site / facility name"
},
"intervention": {
"type": "string",
"maxLength": 200,
"minLength": 1,
"description": "Drug or other intervention name"
},
"start_date_to": {
"type": "string",
"pattern": "^\\d{4}-\\d{2}-\\d{2}$"
},
"updated_since": {
"type": "string",
"pattern": "^\\d{4}-\\d{2}-\\d{2}$"
},
"location_filter": {
"type": "object",
"properties": {
"city": {
"type": "string",
"maxLength": 80,
"minLength": 1
},
"state": {
"type": "string",
"maxLength": 80,
"minLength": 1
},
"country": {
"type": "string",
"maxLength": 80,
"minLength": 1
}
},
"description": "Show only sites in this city/state/country in each result",
"additionalProperties": false
},
"start_date_from": {
"type": "string",
"pattern": "^\\d{4}-\\d{2}-\\d{2}$"
},
"first_posted_since": {
"type": "string",
"pattern": "^\\d{4}-\\d{2}-\\d{2}$"
},
"recruitment_status": {
"type": "array",
"items": {
"enum": [
"ACTIVE_NOT_RECRUITING",
"COMPLETED",
"ENROLLING_BY_INVITATION",
"NOT_YET_RECRUITING",
"RECRUITING",
"SUSPENDED",
"TERMINATED",
"WITHDRAWN",
"AVAILABLE",
"NO_LONGER_AVAILABLE",
"TEMPORARILY_NOT_AVAILABLE",
"APPROVED_FOR_MARKETING",
"WITHHELD",
"UNKNOWN"
],
"type": "string"
},
"maxItems": 14
}
},
"additionalProperties": false
}