# Halowerk Clinical Trial Finder

> Halowerk Clinical Trial Finder is a paid API for AI agents from med.halowerk.com, paid per call via x402, $0.006/call, status unknown (last checked 2026-09-15).

Searches the clinical trial registry and returns matching studies with recruitment status, phase, type, enrolment target, conditions, interventions, sponsor, dates, and site countries.

## Facts

- Endpoint: POST https://med.halowerk.com/v1/trial-finder
- Price: $0.006/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/halowerk-clinical-trial-finder-47d821c3
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_jP5mQsBrNWq3glzfSM3Wp

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability halowerk-clinical-trial-finder-47d821c3 -d '<json body>'
```

Example prompt: Find me recruiting clinical trials for non-small cell lung cancer that are testing immunotherapy — I need the phase, enrolment target, sponsor, and which countries have sites.

## When to prefer this

Use this endpoint when you need structured, machine-readable information about clinical trials including recruitment status, phase, and geographic scope — especially for conditions, drugs, or interventions. Prefer this over raw ClinicalTrials.gov scraping because it translates registry codes into human-readable fields and pre-selects the most decision-relevant attributes. Choose this over general web search when you need clean structured data rather than narrative summaries.

## Known failure modes

- No matching trials found for the given query — returns empty results list
- Ambiguous or misspelled condition/drug name yields irrelevant or no results
- Registry data may be stale if upstream ClinicalTrials.gov has not been recently synced
- Overly broad queries may return too many results to be actionable
- Rare or very new conditions may have no registered trials

## How this service works

Searches the clinical trial registry and returns matching studies with the fields that decide whether a trial is relevant: the recruitment status translated from the registry code, the phase, the study type, the enrolment target, the conditions and interventions, the sponsor, the start and completion dates, and the countries with sites.

## Output

Returns a list of matching clinical trial studies, each containing the human-readable recruitment status (translated from registry code), trial phase, study type, enrolment target number, associated conditions and interventions, sponsor name, start and primary completion dates, and the list of countries where trial sites are located.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "limit": {
   "type": "integer",
   "default": 25,
   "maximum": 100,
   "minimum": 1
  },
  "phase": {
   "enum": [
    "PHASE1",
    "PHASE2",
    "PHASE3",
    "PHASE4",
    "EARLY_PHASE1",
    "NA"
   ],
   "type": "string"
  },
  "country": {
   "type": "string",
   "maxLength": 60,
   "description": "Country name as used by the registry, e.g. Germany."
  },
  "condition": {
   "type": "string",
   "maxLength": 200,
   "description": "Disease or condition."
  },
  "intervention": {
   "type": "string",
   "maxLength": 200,
   "description": "Drug, device or procedure."
  },
  "recruiting_only": {
   "type": "boolean",
   "default": true
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/halowerk-clinical-trial-finder-47d821c3/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from med.halowerk.com](https://www.zero.xyz/host/med.halowerk.com/llms.txt)