trials-search
Search ClinicalTrials.gov by indication, company, molecule or free text and get a ranked list of normalized trial records with total count and on-page facet summary. Optional phase, status, study-type and country filters. A cheap first step before /trials/study or /trials/pipeline.
The wallet the 402 directs payment to. Its full payment record is on the merchant page.
Asset EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v
The payTo wallet does not resolve to a registered ERC-8004 agent. That is not a verdict on the service; most of the catalog is unregistered.
Recent payments · which agents last used it
Every indexed settlement paid to this service’s wallet, newest first. The index does not record which endpoint a payment was for, so if this wallet serves more than one endpoint, the rows include payments for the others. Paged up to the newest 5,000; the full history is on the merchant page.
Accepts
The payment requirements as published to the catalog. Read the live 402 before paying: a price here is a claim, not a quote.
That figure is in the token’s smallest units. Roundhouse does not hold this contract’s decimals, so it is shown as published rather than converted.
- Paid to
- AytHnv…Z8R1u
- Token contract
- EPjFWd…TDt1v
- Payment window
- 5 minutes
The catalog’s raw entry
[
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "CjNFTjvBhbJJd2B5ePPMHRLx1ELZpa8dwQgGL727eKww"
},
"payTo": "AytHnvc6bZx1ALTy7b5Px7hcavoSYszG9aeKvDcZ8R1u",
"amount": "15000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 300
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"cond": "lung cancer",
"phase": "3",
"status": "recruiting"
}
},
"output": {
"type": "json",
"example": {
"query": {
"cond": "lung cancer",
"phase": "3"
},
"results": [
{
"title": "A Phase 3 NSCLC Study",
"nct_id": "NCT00000000",
"phases": [
"Phase 3"
],
"status": "recruiting",
"enrollment": 600,
"lead_sponsor": "Example Pharma",
"primary_completion_date": "2027-06-30"
}
],
"returned": 1,
"attribution": [
"Source: ClinicalTrials.gov (U.S. National Library of Medicine, NIH)"
],
"total_count": 1380,
"facets_on_page": {
"by_phase": {
"Phase 3": 1
},
"by_status": {
"recruiting": 1
}
}
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method"
],
"properties": {
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"GET",
"HEAD",
"DELETE"
],
"type": "string"
},
"queryParams": {
"type": "object",
"required": [],
"properties": {
"cond": {
"type": "string",
"description": "Condition, indication or disease"
},
"intr": {
"type": "string",
"description": "Intervention, drug or molecule name"
},
"lead": {
"type": "string",
"description": "Lead sponsor name"
},
"term": {
"type": "string",
"description": "Free-text other terms"
},
"phase": {
"enum": [
"0",
"1",
"2",
"3",
"4"
],
"type": "string",
"description": "Trial phase to filter by, where 0 is Early Phase 1"
},
"spons": {
"type": "string",
"description": "Sponsor or collaborator name"
},
"status": {
"enum": [
"recruiting",
"not_yet_recruiting",
"active_not_recruiting",
"completed",
"terminated",
"withdrawn",
"suspended"
],
"type": "string",
"description": "Overall recruitment status to filter by"
},
"titles": {
"type": "string",
"description": "Title or acronym terms"
},
"country": {
"type": "string",
"description": "Country to narrow trial sites"
},
"page_size": {
"type": "integer",
"maximum": 50,
"minimum": 1,
"description": "Max records to return, default 10"
},
"study_type": {
"enum": [
"int",
"obs",
"exp"
],
"type": "string",
"description": "Study type: int interventional, obs observational, exp expanded access"
}
}
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object"
}
}
}
}
}
}
}Provenance
- Seen in the source catalog
- 2026-11-13 07:38Z
- Last indexed by Roundhouse
- 2026-11-15 16:15Z
- Last enriched (probe, favicon, geo)
- –
- x402 version
- 2
- Max timeout
- 300s
- Liveness probe
- Not probed
Hand this page to an agent
Copy the prompt and paste it into Claude, an MCP client or your own agent: it will vet this service and call it over the free read API. No key, no account.
GET api.roundhouseai.io/v0/endpoints
No per-endpoint history for this service yet, so this is payments indexed to its PROVIDER's wallet over 30 days. Verified volume counts only settlements with an on-chain EIP-3009 marker.
Show the promptHide the prompt
Using Roundhouse, look up the x402 service trials-search and tell me whether it is worth paying: what a call costs, whether the endpoint answered when last probed, and what its payment record actually shows. curl -s 'https://api.roundhouseai.io/v0/endpoints?q=trials-search' curl -s 'https://api.roundhouseai.io/v0/merchants/<the payTo wallet returned above>' Then call it: read the price from the live 402 at https://payai.agentstools.dev/trials/search, never from a cached figure, and pay with an x402 client. The /v0 API needs an API key (`authorization: Bearer rh_live_…`) on everything except /v0/unified* and /v0/endpoints. Either pay over x402 (mint a personal key for $0.01 at GET https://api.roundhouseai.io/v0/test/x402), or ask me for an organization key, which I create at https://roundhouseai.io/dashboard/connections. If you have neither, ask before going further. If you do not have Roundhouse tools or skills installed, read https://roundhouseai.io/skill.md first — it is the whole procedure.