$0.01
per call · USD Coin on Base
Find recently updated ClinicalTrials.gov study identifiers, titles and registry status for a condition, with the registry processing date. No medical conclusion.
Endpoint
POST https://foundry-par007-machine-revenue-mainnet.inference-chip-index.workers.dev/v2/official/clinicaltrials-search1
Calls / 30d
1
Unique payers / 30d
Sep 6
Last called
exact
Payment scheme
Call this service
import { wrapFetchWithPayment } from "@x402/fetch";
import { privateKeyToAccount } from "viem/accounts";
const account = privateKeyToAccount(process.env.PRIVATE_KEY);
const fetchWithPay = wrapFetchWithPayment(fetch, account);
const res = await fetchWithPay("https://foundry-par007-machine-revenue-mainnet.inference-chip-index.workers.dev/v2/official/clinicaltrials-search", {
method: "POST",
headers: { "Content-Type": "application/json" },
body: JSON.stringify({
"condition": "asthma",
"limit": 5
}),
});
const data = await res.json();curl -X POST \
"https://foundry-par007-machine-revenue-mainnet.inference-chip-index.workers.dev/v2/official/clinicaltrials-search" \
-H "Content-Type: application/json" \
-d '{"condition":"asthma","limit":5}' \
-H "X-PAYMENT: <signed x402 payment>"Example response
{
"observed_at": "2026-09-06T00:00:00Z",
"result": {
"freshness": {
"cacheAgeSeconds": 0,
"maximumCacheSeconds": 0,
"recordAgeIsNotRetrievalAge": true,
"retrievedAt": "2026-09-06T00:00:00Z",
"state": "CURRENT_RETRIEVAL"
},
"normalizedResult": [],
"observedAt": "2026-09-06T00:00:00Z",
"provenance": {
"attribution": "ClinicalTrials.gov, US National Library of Medicine",
"documentationUrl": "https://clinicaltrials.gov/data-api/api",
"license": "ClinicalTrials.gov terms; bounded factual study metadata only",
"limitations": [
"Illustrative empty result; no live data claim."
],
"modifications": "Selected factual fields, normalized names and bounded result count; no source ownership claimed.",
"termsUrl": "https://clinicaltrials.gov/about-site/terms-conditions",
"truncated": false,
"upstreamCalls": 1
},
"query": {
"condition": "asthma",
"limit": 5
},
"rawSourceIdentifiers": [],
"source": "ClinicalTrials.gov",
"sourceProcessedAt": null,
"sourceUpdatedAt": null,
"sourceUrl": "https://clinicaltrials.gov"
},
"route": "clinicaltrials-search"
}Payment details
0x25e8245f07d5e4873987293dad666afbe56a9608USD Coin · 0x833589fcd6edb6e08f4c7c32d4f71b54bda02913Is this your API?
Pin it to the top of Search & Web and the homepage with a featured placement.
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