research.halowerk.com
HALOWERK provides paid endpoints that AI agents call and pay for per request via x402 on Base. No account, no API key, no signup.
SearchLiveeip155:8453Exactvia cdp
Calls · 30d
1→ 0%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 18 snapshots so far.
$11.49
Verified settled volume
2,661 settlements proven x402 by their on-chain EIP-3009 marker.
$0.0020
Listed price
As published in the catalog. Always read the live 402 before paying.
1
Calls · 30d
Upstream's own call count for this endpoint, not ours.
1
Unique payers · 30d
Last called 2026-08-12 08:09Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0x2880EdfFF13100677Bf97A3CBdF3Bc34771C4E5EThe wallet the 402 directs payment to. Its whole payment record — every payer, every chain — is on the merchant page.
Asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
Provider
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.
Live 402 challenge
Captured by the enrichment pass, not read just now. Prices can change — always read the 402 the endpoint answers with.
{
"docs": "https://research.halowerk.com/llms.txt",
"name": "official_sources",
"error": "payment_required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"asset": "USDC",
"version": "2",
"eip712Domain": {
"name": "USD Coin",
"chainId": 8453,
"version": "2",
"verifyingContract": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
},
"network_name": "Base Mainnet",
"assetTransferMethod": "eip3009"
},
"payTo": "0x2880EdfFF13100677Bf97A3CBdF3Bc34771C4E5E",
"amount": "2000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
],
"pricing": "https://research.halowerk.com/pricing",
"resource": {
"url": "https://research.halowerk.com/v1/official-sources",
"mimeType": "application/json",
"description": "Answers the two questions that open any serious piece of research. First, where does something stand officially: filter a curated directory of authorities, registers, standards bodies and intergovernmental organisations by subject and country and get, for each one, what it is actually authoritative for, which is the real answer rather than a bare list of links."
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"domain": "unternehmensregister",
"country": "DE"
},
"type": "http",
"method": "POST",
"bodyType": "json"
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method",
"bodyType",
"body"
],
"properties": {
"body": {
"type": "object",
"properties": {
"url": {
"type": "string",
"maxLength": 2000,
"description": "Address or domain to classify as official or not."
},
"query": {
"type": "string",
"maxLength": 200,
"description": "Free text matched against names and remits, for example Patente or statistics."
},
"domain": {
"enum": [
"recht",
"unternehmensregister",
"statistik",
"normung",
"schutzrechte",
"gesundheit",
"chemikalien",
"finanzaufsicht",
"vergabe",
"datenportal",
"umwelt",
"internet"
],
"type": "string",
"description": "Subject area to filter by: recht, unternehmensregister, statistik, normung, schutzrechte, gesundheit, chemikalien, finanzaufsicht, vergabe, datenportal, umwelt, internet."
},
"country": {
"type": "string",
"pattern": "^[A-Za-z]{2,3}$",
"description": "Jurisdiction as ISO country code, or EU for the Union, or INT for intergovernmental bodies."
}
},
"additionalProperties": false
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"POST",
"PUT",
"PATCH"
],
"type": "string"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
}
},
"additionalProperties": false
}
}
}
}
},
"price_usdc": "0.002",
"description": "Answers the two questions that open any serious piece of research. First, where does something stand officially: filter a curated directory of authorities, registers, standards bodies and intergovernmental organisations by subject and country and get, for each one, what it is actually authoritative for, which is the real answer rather than a bare list of links. Second, is this address official: a URL is matched against the directory and, failing that, against the domain suffixes reserved for state bodies, which reaches far beyond any list since most authorities worldwide sit under one. A directory hit and a suffix hit are reported as different rules with different confidence, because a suffix says the body is official without saying what it is competent for. The endpoint is explicit about its limits in every answer: no hit is never evidence that a source is unofficial, only that it is not confirmed here, since sixty entries cannot represent the authorities of the world and many standards bodies use ordinary domains. It performs no web search and no network access at all, so an entry is a statement about a name, not about the server behind it or whether that server answers today. The directory carries the date it was last maintained.",
"inputSchema": {
"type": "object",
"properties": {
"url": {
"type": "string",
"maxLength": 2000,
"description": "Address or domain to classify as official or not."
},
"query": {
"type": "string",
"maxLength": 200,
"description": "Free text matched against names and remits, for example Patente or statistics."
},
"domain": {
"enum": [
"recht",
"unternehmensregister",
"statistik",
"normung",
"schutzrechte",
"gesundheit",
"chemikalien",
"finanzaufsicht",
"vergabe",
"datenportal",
"umwelt",
"internet"
],
"type": "string",
"description": "Subject area to filter by: recht, unternehmensregister, statistik, normung, schutzrechte, gesundheit, chemikalien, finanzaufsicht, vergabe, datenportal, umwelt, internet."
},
"country": {
"type": "string",
"pattern": "^[A-Za-z]{2,3}$",
"description": "Jurisdiction as ISO country code, or EU for the Union, or INT for intergovernmental bodies."
}
},
"additionalProperties": false
},
"price_model": "per_call",
"x402Version": 2,
"instructions": "Sign the accepted terms with an x402 client and repeat the request with the payment header.",
"payment_header": "PAYMENT-SIGNATURE",
"capability_request": {
"url": "https://bedarf.halowerk.com/capabilities/request",
"cost": "free",
"method": "POST",
"description": "Missing a capability, or does the scope not fit? Report the need here - no payment required. Similar reports are bundled; the response returns an id you can check back on.",
"body_example": {
"max_price": 0.01,
"description": "what exactly is needed",
"requested_capability": "short label"
}
}
}Accepts
The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.
0.002USDC≈ $0.002 USD
on Base · exact scheme
Pay 0.002 USDC on Base to 0x2880…C4E5E. The signed payment is good for 5 minutes.
- Paid to
- 0x2880…C4E5E
- USD Coin contract
- 0x8335…02913
- Payment window
- 5 minutes
- As published
- 2000 smallest units
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"asset": "USDC",
"version": "2",
"eip712Domain": {
"name": "USD Coin",
"chainId": 8453,
"version": "2",
"verifyingContract": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
},
"network_name": "Base Mainnet",
"assetTransferMethod": "eip3009"
},
"payTo": "0x2880EdfFF13100677Bf97A3CBdF3Bc34771C4E5E",
"amount": "2000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"body": {
"domain": "unternehmensregister",
"country": "DE"
},
"type": "http",
"method": "POST",
"bodyType": "json"
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method",
"bodyType",
"body"
],
"properties": {
"body": {
"type": "object",
"properties": {
"url": {
"type": "string",
"maxLength": 2000,
"description": "Address or domain to classify as official or not."
},
"query": {
"type": "string",
"maxLength": 200,
"description": "Free text matched against names and remits, for example Patente or statistics."
},
"domain": {
"enum": [
"recht",
"unternehmensregister",
"statistik",
"normung",
"schutzrechte",
"gesundheit",
"chemikalien",
"finanzaufsicht",
"vergabe",
"datenportal",
"umwelt",
"internet"
],
"type": "string",
"description": "Subject area to filter by: recht, unternehmensregister, statistik, normung, schutzrechte, gesundheit, chemikalien, finanzaufsicht, vergabe, datenportal, umwelt, internet."
},
"country": {
"type": "string",
"pattern": "^[A-Za-z]{2,3}$",
"description": "Jurisdiction as ISO country code, or EU for the Union, or INT for intergovernmental bodies."
}
},
"additionalProperties": false
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"POST",
"PUT",
"PATCH"
],
"type": "string"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
}
},
"additionalProperties": false
}
}
}
}
}Provenance
- Seen in the source catalog
- 2026-08-12 08:09Z
- Last indexed by Roundhouse
- 2026-09-11 08:00Z
- Last enriched (probe, favicon, geo)
- 2026-09-21 08:45Z
- x402 version
- 2
- Max timeout
- 300s
- Liveness probe
- HTTP 402
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
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 18 snapshots so far. Verified volume counts only settlements with an on-chain EIP-3009 marker.
Show the promptHide the prompt
Using Roundhouse, look up the x402 service research.halowerk.com 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=research.halowerk.com' 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://research.halowerk.com/v1/official-sources, 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. Mint a personal key for $0.01 at GET https://api.roundhouseai.io/v0/test/x402, or use an organization key from https://roundhouseai.io/dashboard/team. If you do not have Roundhouse tools or skills installed, read https://roundhouseai.io/skill.md first — it is the whole procedure.