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Life sciences

ClinicalTrials.gov

ClinicalTrials.gov study registry via the public v2 REST API: search studies by condition, intervention, sponsor, location, status or Essie expression with page-token pagination; fetch one study record by NCT number; batch-resolve the raw ACTUAL/ESTIMATED start, primary-completion and completion dates for known NCT numbers; autocomplete conditions, interventions, sponsors and facilities; and read registry-wide field value statistics.

12 Firecrawl tools use ClinicalTrials.gov
Try in Agent
Find the first 10 recruiting breast cancer studies involving pembrolizumab and show their NCT IDs, sponsors and start dates with ACTUAL or ESTIMATED labels.

Try ClinicalTrials.gov now.

Choose an example or ask your own question.

ClinicalTrials.gov
TRY ASKING
1Request
string

Essie filter expression applied after the query (filter.advanced), e.g. AREA[StartDateType]ESTIMATED.

string

Facet filters as the site encodes them (aggFilters), e.g. "phase:3,status:rec".

string

Condition or disease (query.cond), e.g. "Breast Cancer". Essie syntax allowed.

string

Intervention or treatment (query.intr), e.g. "Pembrolizumab".

number

Studies per page (the API accepts up to 1000; capped at 100 here).

5 credits
Codefollows the fields above
const result = await firecrawl.scrape({
  alexandria: {
    provider: "clinicaltrials-gov",
    capability: "clinical-trials/search",
    options: {
      condition: "Breast Cancer",
      intervention: "Pembrolizumab",
      page_size: 3,
    },
  },
});
2Response example

This is a sample shape. Press Run to see live data from ClinicalTrials.gov.

api_url
https://clinicaltrials.gov/api/v2/studies?query.cond=Breast%20Cancer&query.intr=Pembrolizumab&fields=NCTId,BriefTitle,OfficialTitle,Acronym,OverallStatus,WhyStopped,StudyType,Phase,Condition,InterventionName,InterventionType,LeadSponsorName,LeadSponsorClass,StartDateStruct,PrimaryCompletionDateStruct,CompletionDateStruct,StudyFirstPostDateStruct,LastUpdatePostDateStruct,EnrollmentInfo,HasResults,LocationCountry&countTotal=true&pageSize=3
next_page_token
ZVNj7o2Elu8o3lpwUd7_5bbumpOQJJxsY_Cl1Pg
observed_at_ms
1790705160120
source_url
https://clinicaltrials.gov/search?cond=Breast%20Cancer&intr=Pembrolizumab
total_count
339
acronymbrief_titlecompletion_dateconditionscountriesenrollmenthas_resultsinterventionslast_update_post_datelead_sponsornct_idofficial_titleoverall_statusphasesprimary_completion_datesource_urlstart_datestudy_first_post_datestudy_typewhy_stopped
Solid TumorLymphomaUnited StatesfalseNCT03544723UNKNOWNPHASE2clinicaltrials.gov/study/NCT03544723INTERVENTIONAL
Breast CancerChinafalseNCT05681728UNKNOWNPHASE2clinicaltrials.gov/study/NCT05681728INTERVENTIONAL
Solid TumorTriple-negative Breast CancerGastric AdenocarcinomaUnited StatesJapantrueNCT04099277TERMINATEDPHASE1clinicaltrials.gov/study/NCT04099277INTERVENTIONAL

Firecrawl tools

12

Ready-made Firecrawl tools that call ClinicalTrials.gov.

Uses ClinicalTrials.gov, FDA, NIH RePORTER, PubMed and PMCAntibiotic pipeline health checkUse when an AMR policy analyst, biotech investor or hospital stewardship lead needs to know whether new antibiotics are actually coming for a resistant pathogen. Counts and dates late-stage trials, checks for slipped timelines, recent FDA approvals and NIH funding, and backs it with the latest literature, giving a pipeline map with realistic arrival windows.6 toolsOpen
Uses ClinicalTrials.gov, NPI Registry, CMS data.cms.govClinical trial site feasibility scanUse when a CRO feasibility lead or sponsor is choosing cities or hospitals to open sites for a trial. Measures competing trials recruiting the same patients, the local pool of matching investigators from the NPI Registry and hospital quality from CMS, then ranks candidate sites.6 toolsOpen
Uses ClinicalTrials.gov, US Census Bureau, PubMed and PMC, Research IndexTrial site population diversity checkUse when a clinical trial diversity officer or feasibility lead checks whether a study's sites can enrol a population that reflects who has the disease. Lists the trial's sites from ClinicalTrials.gov, profiles each site's county by race, ethnicity, age and language from Census data, and reviews published evidence on disease burden by group, producing a site diversity scorecard.7 toolsOpen
Uses FDA, ClinicalTrials.gov, PubMed and PMCFormulary addition evidence packUse when a P&T committee pharmacist or drug information specialist prepares a formulary review for a newly approved drug. Pulls the approval history and label, the pivotal and ongoing trials with results, published evidence from PubMed and early real-world adverse event reports, then drafts a sourced monograph with a recommendation.7 toolsOpen
Uses FDA, PubMed and PMC, ClinicalTrials.gov, European Medicines AgencyAdverse event signal triage for a marketed drugUse when a pharmacovigilance scientist, medical affairs lead or hospital pharmacist sees a possible new safety signal for a marketed drug. Counts FAERS reports for the drug and reaction, checks whether the label already lists it, looks for published case reports and dedicated safety trials, and checks the EU regulatory picture, then rates the signal.6 toolsOpen
Uses FDA, European Medicines Agency, ClinicalTrials.govDrug shortage impact assessmentUse when a hospital pharmacy director or supply chain lead learns a drug is short and needs to plan. Reads the FDA shortage entry, finds alternative labelers and presentations, checks recalls at the affected manufacturer, compares the EU shortage picture and lists clinical trials that depend on the drug.6 toolsOpen
Uses NIH Dietary Supplement Label Database (dsld.od.nih.gov), PubMed and PMC, ClinicalTrials.gov, FDASupplement claim evidence checkUse when a dietitian, pharmacist, health journalist or retail buyer needs to know whether a dietary supplement's claims hold up. Reads the actual label doses, compares them with doses used in published trials and registered studies, and checks for recalls, producing an evidence grade per claim.7 toolsOpen
Uses IHME GBD Results, WHO Global Health Observatory, NIH RePORTER, ClinicalTrials.gov, PubMed and PMC+1Disease burden versus research attention gapUse when a research funder, foundation programme officer or policy analyst wants to know which diseases get far less research money and trial activity than their burden suggests. Builds a cause list from the GBD hierarchy, joins WHO mortality, NIH grants, recruiting trials and publication counts, and ranks the most neglected causes.7 toolsOpen
Uses WHO Global Health Observatory, European Medicines Agency, FDA, ClinicalTrials.govEx-US launch market screenUse when a pharma or medtech market-access team is ranking countries for launch after US approval. Pulls WHO disease burden for the indication by country, checks which competitors already hold EU authorisation and US approval, and counts competing trials recruiting in each country, then ranks markets by burden, competition and trial crowding.5 toolsOpen

Benchmarks

Life sciences benchmarks

Quality, speed and cost, last 24 hours, across every agent call to ClinicalTrials.gov through Alexandria.

Quality
99.6%
Calls answered without a tool error
Speed
505 ms
95% of successful calls finish faster
Cost
5 credits
Firecrawl credits per call
Calls
223
Last 24 hours, every Alexandria user
Quality and speed of each tool, last 24 hours
ToolQualitySpeedCalls
Study99.2%339 ms125
Search100%505 ms95

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