API product

Semantic expansion for clinical trial discovery.

Complete the trial landscape before you model it.

Exact-match search is a structural limitation of trial registration. TrialFinder expands the condition first, then queries the authoritative ClinicalTrials.gov surface across the full semantic set.

Start with the demo Request API access
The problem

ClinicalTrials.gov is comprehensive. Exact-match search is not.

When a condition is registered under variant terminology, downstream search silently drops the trial. That distortion shows up everywhere the search output is treated as the landscape.

A query for posterior fossa arachnoid cyst returns roughly 50 trials on exact match. But clinically adjacent registrations using posterior fossa cyst, retrocerebellar cyst, or Dandy-Walker variant disappear unless someone has already done the terminology work.

That is not a data quality problem. It is a retrieval problem. Hedge funds miss enrollment signal. CROs miss competitive filings. Patient advocates miss trials people can actually enter.

The fix is a curated semantic graph built from the literature, the coding system, and the operator surface — not generic language-model expansion.

How it works

One API call. Sub-second response.

The pipeline is straightforward because the retrieval logic is opinionated. The complexity lives in the graph, not in a pile of runtime guesswork.

01 / Input
Plain-language condition
Condition name, code, or operator shorthand. No preprocessing ceremony required.
02 / Expansion
Curated graph
Variant labels, parent categories, anatomy, systems, related conditions, comorbidities, and therapeutic targets.
03 / Retrieval
Authoritative query
Parallel calls against ClinicalTrials.gov API v2 across the expanded term set.
04 / Output
Deduplicated landscape
Ranked, de-duped results ready for analytics, export, or product workflows.
System metrics

Coverage, speed, and operator readiness.

These metrics matter because they describe whether the API is usable in a real workflow, not whether the demo looked clever once.

100% lift
Average lift verified on the CCAS corpus. Expansion is curated, conservative, and designed to be auditable.
7 endpoints
Search, expand, rank, batch, export, health, and analytics coverage for the full discovery workflow.
<1s p95
Cloudflare edge deployment. Fast enough to sit inside operator tooling, not just static reports.
10,463+ papers
The indexed literature behind the synonym graph and condition coverage work.
CT.gov API v2
Authoritative source. Not scraped. Not stale. Not a shadow database pretending to be current.
0 false positives
Human-reviewed mappings keep the graph tight enough for real decision-making.
Use cases

Who this is for.

The same retrieval layer pays off differently depending on who is downstream of the search result and what they are trying to predict, ship, or advocate for.

Hedge funds
Track enrollment velocity and competitive exposure across the full expanded trial set instead of the narrow set every other desk already sees.
Pharma CROs
Map sponsors, filings, and trial adjacency even when registrations use different terminology or filing conventions.
Patient advocacy
Surface the real recruiting landscape for a patient, then rank it by geography and accessibility instead of pretending the first exact search is the truth.
Academic research
Bridge the literature language and the trial-registration language when conducting reviews, building datasets, or validating treatment pipelines.
Access

Public proof first. Direct access when the workflow is real.

The public demo is there so the proof can happen in public. Paid access exists because this belongs inside real operator workflows, not one-off screenshots.

Public proof
$0
Live demo
  • Basic condition search
  • JSON output
  • Public demo surface
Operator
$99
500 requests/day
  • Expanded analytics landscape
  • Enrollment velocity tracking
  • CSV + JSON export
  • Priority support
Institutional
$499
Custom volume
  • Custom condition graphs
  • Batch processing
  • Dedicated support lane
  • On-prem option
Get operator access

Start with the demo. Scale from there.

If the demo makes the missing landscape obvious, move straight to credentials, walkthroughs, or an institutional deployment conversation. No extra theater required.

Response within one business day. Contact lands directly with the operator.

Request access Open the live demo