# x402-toolbox Clinical Trials Search

> x402-toolbox Clinical Trials Search is a paid API for AI agents from x402-toolbox.shablony-pro.workers.dev, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-02).

Search for clinical trials by condition, intervention, or keyword via pay-per-call without API key signup

## Facts

- Endpoint: GET https://x402-toolbox.shablony-pro.workers.dev/research/clinical-trials-search?utm_source=zero.xyz
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-toolbox-clinical-trials-search-7fbf3e16
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_RKSR6_Ggzii3XTDnOps14

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 x402-toolbox-clinical-trials-search-7fbf3e16
```

Example prompt: Search for recruiting clinical trials on Type 2 Diabetes treatment — I want to see active studies with their phase, sponsor, and eligibility details.

## When to prefer this

Choose this endpoint when you need no-signup, pay-per-call access to clinical trial data at $0.003 per query via USDC on Base — ideal for AI agents that require on-demand medical research lookups without maintaining API credentials or subscriptions. Prefer this over ClinicalTrials.gov direct API when operating in a crypto-native, agentic payment environment.

## Known failure modes

- Invalid or malformed schema parameter returns error response
- No trials found for obscure or misspelled condition names
- Payment failure via x402 results in 402 status with no data returned
- Rate limiting or worker timeout for very broad queries
- Incomplete schema field causes partial or empty result set

## How this service works

309 deterministic pay-per-call tools for AI agents over x402 (USDC, Base). No signup, no API key: the payment is the identity.

## Output

Returns a JSON object with ok and paid fields confirming success, along with clinical trial records matching the search query including trial identifiers, phase, status, sponsor information, and eligibility criteria details.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "schema": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "ok": true,
  "paid": true
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-toolbox-clinical-trials-search-7fbf3e16/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402-toolbox.shablony-pro.workers.dev](https://www.zero.xyz/host/x402-toolbox.shablony-pro.workers.dev/llms.txt)