ToolVet
78trust / 100

Execute Clinical Trials Search V1

by Macaroon Network in Search & web

x402 APIPassing, checked 37 min ago

Search live clinical trial records from ClinicalTrials.gov: status, phase, conditions, interventions, lead sponsor, eligibility (sex, age range, a short truncated criteria excerpt), and locations. The only source used is the U.S. National Library of Medicine's public ClinicalTrials.gov API v2, available at no charge. Full eligibility-criteria text, full descriptions, and investigator/recruitment contact details are never returned -- only source-linked, truncated summary metadata.

POST
https://api.macaroonnetwork.com/execute/clinical-trials-search-v1
Price
$0.003
per call in USDC
Uptime
100%
last 30 days
Response time
225 ms
434 ms slowest 5%
Last check
Passed
37 min ago, next any minute now

Run a free test callHow to call it

Reliability

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Status and outage history · Atom feed

How to call it

POST https://api.macaroonnetwork.com/execute/clinical-trials-search-v1

Each call costs $0.003 in USDC on Base, paid with the request over x402.

Run a free test callOne unpaid request, the way an agent sends it. You see the payment challenge it gets back. Nothing is charged.

Example request

From the listing.

POST https://api.macaroonnetwork.com/execute/clinical-trials-search-v1
content-type: application/json

{
  "input": {
    "filters": {
      "limit": 5,
      "status": "RECRUITING"
    },
    "query": "find recruiting clinical trials for type 2 diabetes"
  },
  "predicate": {
    "conditions": [
      {
        "field": "$.results",
        "type": "count_gte",
        "value": 1
      }
    ],
    "type": "all"
  }
}

Example response

The provider's example. We can't check it without paying.

{
  "payload": {
    "notices": [],
    "query": "",
    "results": []
  },
  "predicate_passed": true,
  "settled": true
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.003.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://api.macaroonnetwork.com/execute/clinical-trials-search-v1' \
  -H 'content-type: application/json' \
  --data-raw '{"input":{"filters":{"limit":5,"status":"RECRUITING"},"query":"find recruiting clinical trials for type 2 diabetes"},"predicate":{"conditions":[{"field":"$.results","type":"count_gte","value":1}],"type":"all"}}'

# x402 v2 sends the challenge base64-encoded in the PAYMENT-REQUIRED header (v1 sends it in the body).
# To read the header:
curl -sS -g -o /dev/null -D - -X POST 'https://api.macaroonnetwork.com/execute/clinical-trials-search-v1' \
  -H 'content-type: application/json' \
  --data-raw '{"input":{"filters":{"limit":5,"status":"RECRUITING"},"query":"find recruiting clinical trials for type 2 diabetes"},"predicate":{"conditions":[{"field":"$.results","type":"count_gte","value":1}],"type":"all"}}' \
  | grep -i '^payment-required:' | cut -d' ' -f2 | tr -d '\r' | base64 --decode
JavaScript: pay and call
// npm i @x402/fetch @x402/evm viem
import { wrapFetchWithPayment, x402Client } from "@x402/fetch";
import { registerExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";

// Pays at most $0.003 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.003" });
registerExactEvmScheme(client, { signer: privateKeyToAccount(process.env.EVM_PRIVATE_KEY) });
const pay = wrapFetchWithPayment(fetch, client);

// Not sure it's safe to pay? ToolVet checks it first for $0.005. Pay for that from a separate
// client: this one is capped at $0.003 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fapi.macaroonnetwork.com%2Fexecute%2Fclinical-trials-search-v1&method=POST
const res = await pay("https://api.macaroonnetwork.com/execute/clinical-trials-search-v1", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "input": {
      "filters": {
        "limit": 5,
        "status": "RECRUITING"
      },
      "query": "find recruiting clinical trials for type 2 diabetes"
    },
    "predicate": {
      "conditions": [
        {
          "field": "$.results",
          "type": "count_gte",
          "value": 1
        }
      ],
      "type": "all"
    }
  }),
});
console.log(res.status, await res.text());
Python: pay and call
# pip install "x402[requests,evm]"
import os
from eth_account import Account
from x402 import x402ClientSync
from x402.http.clients import x402_requests
from x402.mechanisms.evm import EthAccountSigner
from x402.mechanisms.evm.exact.register import register_exact_evm_client

# Pays at most $0.003 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.003"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.post(
        "https://api.macaroonnetwork.com/execute/clinical-trials-search-v1",
        json={
            "input": {
                "filters": {
                    "limit": 5,
                    "status": "RECRUITING",
                },
                "query": "find recruiting clinical trials for type 2 diabetes",
            },
            "predicate": {
                "conditions": [
                    {
                        "field": "$.results",
                        "type": "count_gte",
                        "value": 1,
                    },
                ],
                "type": "all",
            },
        },
    )
    print(res.status_code, res.text)

Security scan

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37 min agoPassed402378 ms$0.003
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9 h agoPassed402279 ms$0.003
14 h agoPassed402225 ms$0.003
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22 h agoPassed40289 ms$0.003
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