handel.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.
OtherLiveeip155:8453Exactvia cdp
Calls · 30d
1→ 0%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 24 snapshots so far.
$11.48
Verified settled volume
2,658 settlements proven x402 by their on-chain EIP-3009 marker.
$0.0040
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 2026-08-18 16:06Z
—
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://handel.halowerk.com/llms.txt",
"name": "sanctions_ofac",
"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": "4000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
],
"pricing": "https://handel.halowerk.com/pricing",
"resource": {
"url": "https://handel.halowerk.com/v1/sanctions-ofac",
"mimeType": "application/json",
"description": "Checks a name against the Specially Designated Nationals and Blocked Persons List published by the US Treasury Office of Foreign Assets Control. Returns each hit with the OFAC record number, the record type (individual, entity, vessel, aircraft), every sanctions programme the record is listed under, the aliases OFAC publishes together with their a.k.a./f.k.a./n.k.a."
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"name": "Ramzan Kadyrov",
"limit": 20,
"match": "all_words",
"program": "RUSSIA-EO14024",
"record_type": "individual",
"include_weak_aliases": true
},
"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",
"required": [
"name"
],
"properties": {
"name": {
"type": "string",
"maxLength": 200,
"minLength": 2,
"description": "Person, company, vessel or aircraft name to screen, e.g. \"Ramzan Kadyrov\" or \"Example Trading LLC\"."
},
"limit": {
"type": "integer",
"default": 20,
"maximum": 50,
"minimum": 1
},
"match": {
"enum": [
"exact",
"all_words",
"partial"
],
"type": "string",
"default": "all_words",
"description": "exact = normalised string equality. all_words = every significant word of the query appears in the OFAC name. partial = at least one significant word, widest and noisiest."
},
"program": {
"type": "string",
"maxLength": 40,
"description": "Restrict to an OFAC sanctions programme code, e.g. \"RUSSIA-EO14024\", \"IRAN\", \"SDGT\", \"CUBA\"."
},
"record_type": {
"enum": [
"any",
"individual",
"entity",
"vessel",
"aircraft"
],
"type": "string",
"default": "any",
"description": "Restrict to one OFAC record type."
},
"include_weak_aliases": {
"type": "boolean",
"default": true,
"description": "Include aliases OFAC itself flags as \"weak\". They are the main source of false positives; set false for a stricter sweep."
}
},
"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": "0.004",
"description": "Checks a name against the Specially Designated Nationals and Blocked Persons List published by the US Treasury Office of Foreign Assets Control. Returns each hit with the OFAC record number, the record type (individual, entity, vessel, aircraft), every sanctions programme the record is listed under, the aliases OFAC publishes together with their a.k.a./f.k.a./n.k.a. kind and OFAC's own strong/weak quality flag, plus nationalities, citizenships, dates and places of birth, addresses, identification documents and vessel particulars where the list carries them. Every hit states how it was found: exact, all_words or partial. LIMITS, and they are not incidental: this covers the SDN list ONLY. It does NOT cover OFAC's other sanctions lists — the Consolidated (non-SDN) lists such as SSI, CAPTA, NS-MBS, FSE and PLC are out of scope, so a party subject to sectoral or correspondent-account restrictions can be absent here. It does NOT apply OFAC's 50 Percent Rule: entities owned 50 percent or more, directly or indirectly, by one or more blocked persons are blocked by operation of law even though OFAC does not list them, and this endpoint will not surface them. There is no phonetic or transliteration matching beyond the aliases OFAC publishes, so a differently romanised name can be missed. OFAC marks some aliases \"weak\" precisely because they generate false positives; they are included by default and can be excluded. This is not the EU, UK or UN list. A result with no hit is NOT clearance and is never labelled as such. This is a first-pass research aid, not a compliance decision, and not legal advice.",
"inputSchema": {
"type": "object",
"required": [
"name"
],
"properties": {
"name": {
"type": "string",
"maxLength": 200,
"minLength": 2,
"description": "Person, company, vessel or aircraft name to screen, e.g. \"Ramzan Kadyrov\" or \"Example Trading LLC\"."
},
"limit": {
"type": "integer",
"default": 20,
"maximum": 50,
"minimum": 1
},
"match": {
"enum": [
"exact",
"all_words",
"partial"
],
"type": "string",
"default": "all_words",
"description": "exact = normalised string equality. all_words = every significant word of the query appears in the OFAC name. partial = at least one significant word, widest and noisiest."
},
"program": {
"type": "string",
"maxLength": 40,
"description": "Restrict to an OFAC sanctions programme code, e.g. \"RUSSIA-EO14024\", \"IRAN\", \"SDGT\", \"CUBA\"."
},
"record_type": {
"enum": [
"any",
"individual",
"entity",
"vessel",
"aircraft"
],
"type": "string",
"default": "any",
"description": "Restrict to one OFAC record type."
},
"include_weak_aliases": {
"type": "boolean",
"default": true,
"description": "Include aliases OFAC itself flags as \"weak\". They are the main source of false positives; set false for a stricter sweep."
}
},
"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.
0.004USDC≈ $0.004 USD
on Base · exact scheme
Pay 0.004 USDC on Base to 0x2880…C4E5E. The signed payment is good for 5 minutes.
- Paid to
- 0x2880…C4E5E
- USD Coin contract
- 0x8335…02913
- Payment window
- 5 minutes
- As published
- 4000 smallest units
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"asset": "USDC",
"version": "2",
"eip712Domain": {
"name": "USD Coin",
"chainId": 8453,
"version": "2",
"verifyingContract": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
},
"network_name": "Base Mainnet",
"assetTransferMethod": "eip3009"
},
"payTo": "0x2880EdfFF13100677Bf97A3CBdF3Bc34771C4E5E",
"amount": "4000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"body": {
"name": "Ramzan Kadyrov",
"limit": 20,
"match": "all_words",
"program": "RUSSIA-EO14024",
"record_type": "individual",
"include_weak_aliases": true
},
"type": "http",
"method": "POST",
"bodyType": "json"
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method",
"bodyType",
"body"
],
"properties": {
"body": {
"type": "object",
"required": [
"name"
],
"properties": {
"name": {
"type": "string",
"maxLength": 200,
"minLength": 2,
"description": "Person, company, vessel or aircraft name to screen, e.g. \"Ramzan Kadyrov\" or \"Example Trading LLC\"."
},
"limit": {
"type": "integer",
"default": 20,
"maximum": 50,
"minimum": 1
},
"match": {
"enum": [
"exact",
"all_words",
"partial"
],
"type": "string",
"default": "all_words",
"description": "exact = normalised string equality. all_words = every significant word of the query appears in the OFAC name. partial = at least one significant word, widest and noisiest."
},
"program": {
"type": "string",
"maxLength": 40,
"description": "Restrict to an OFAC sanctions programme code, e.g. \"RUSSIA-EO14024\", \"IRAN\", \"SDGT\", \"CUBA\"."
},
"record_type": {
"enum": [
"any",
"individual",
"entity",
"vessel",
"aircraft"
],
"type": "string",
"default": "any",
"description": "Restrict to one OFAC record type."
},
"include_weak_aliases": {
"type": "boolean",
"default": true,
"description": "Include aliases OFAC itself flags as \"weak\". They are the main source of false positives; set false for a stricter sweep."
}
},
"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
- 2026-08-18 16:06Z
- Last indexed by Roundhouse
- 2026-09-17 16:10Z
- Last enriched (probe, favicon, geo)
- 2026-09-23 04:15Z
- 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. 24 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 handel.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=handel.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://handel.halowerk.com/v1/sanctions-ofac, 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.