HALOWERK x402werk
HALOWERK provides paid endpoints that AI agents call and pay for per request via x402 on Base. No account, no API key, no signup.
TradingLiveeip155:8453Exactvia 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.
$11.47
Verified settled volume
2,655 settlements proven x402 by their on-chain EIP-3009 marker.
$0.0050
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 2026-08-11 09:11Z
—
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://x402.halowerk.com/llms.txt",
"name": "payment_route",
"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": "5000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
],
"pricing": "https://x402.halowerk.com/pricing",
"summary": "Ranks the ways an agent can pay a given amount from the balances it holds against what a seller accepts, with every cost brought into USD and swaps or bridges marked as what they are.",
"resource": {
"url": "https://x402.halowerk.com/route/optimize",
"iconUrl": "https://x402.halowerk.com/favicon.svg",
"mimeType": "application/json",
"description": "Takes what the caller holds and what the seller accepts and works out which combinations can settle the amount. All costs are brought into USD, otherwise no comparison is possible: gas on the source chain plus, where needed, the cost of a swap or a bridge. Routes that require a swap or a bridge are marked explicitly - they often look cheaper on paper and are slower and riskier in practice. Every assumption is named in assumptions; nothing is folded in silently. Limits: gas costs are ORDERS OF MA",
"serviceName": "HALOWERK x402werk"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"available": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"chain": "eip155:8453",
"balance": 0
}
],
"amount_usd": 0.000001,
"accepted_by_seller": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"chain": "eip155:8453",
"scheme": "beispiel"
}
]
},
"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": [
"amount_usd",
"available",
"accepted_by_seller"
],
"properties": {
"priority": {
"enum": [
"guenstig",
"schnell",
"sicher"
],
"type": "string",
"default": "guenstig",
"description": "Which ranking to put first. All three are always returned."
},
"available": {
"type": "array",
"items": {
"type": "object",
"required": [
"chain",
"asset",
"balance"
],
"properties": {
"asset": {
"type": "string",
"description": "Asset address or symbol."
},
"chain": {
"type": "string",
"description": "CAIP-2 chain, for example eip155:8453."
},
"balance": {
"type": "number",
"minimum": 0,
"description": "Balance in USD equivalent."
}
},
"additionalProperties": false
},
"maxItems": 30,
"minItems": 1,
"description": "What the caller holds."
},
"amount_usd": {
"type": "number",
"minimum": 0.000001,
"description": "Amount to be paid, in USD."
},
"accepted_by_seller": {
"type": "array",
"items": {
"type": "object",
"required": [
"chain",
"asset"
],
"properties": {
"asset": {
"type": "string"
},
"chain": {
"type": "string"
},
"scheme": {
"type": "string",
"description": "Payment scheme, usually exact."
}
},
"additionalProperties": false
},
"maxItems": 30,
"minItems": 1,
"description": "What the seller accepts."
}
},
"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": "0.005",
"description": "Takes what the caller holds and what the seller accepts and works out which combinations can settle the amount. All costs are brought into USD, otherwise no comparison is possible: gas on the source chain plus, where needed, the cost of a swap or a bridge. Routes that require a swap or a bridge are marked explicitly - they often look cheaper on paper and are slower and riskier in practice. Every assumption is named in assumptions; nothing is folded in silently. Limits: gas costs are ORDERS OF MAGNITUDE from a static table, not live gas prices, and that is stated in assumptions - a live gas oracle per chain is not part of this endpoint. reliability_score is NOT filled: it was meant to come from the measurement series of the facilitator monitor, and that series does not exist, so the field stays null rather than carrying a number with nothing behind it. No recommendation is forced: the ranking is by total cost, and best_by_time and best_by_cost are given separately so the caller decides.",
"inputSchema": {
"type": "object",
"required": [
"amount_usd",
"available",
"accepted_by_seller"
],
"properties": {
"priority": {
"enum": [
"guenstig",
"schnell",
"sicher"
],
"type": "string",
"default": "guenstig",
"description": "Which ranking to put first. All three are always returned."
},
"available": {
"type": "array",
"items": {
"type": "object",
"required": [
"chain",
"asset",
"balance"
],
"properties": {
"asset": {
"type": "string",
"description": "Asset address or symbol."
},
"chain": {
"type": "string",
"description": "CAIP-2 chain, for example eip155:8453."
},
"balance": {
"type": "number",
"minimum": 0,
"description": "Balance in USD equivalent."
}
},
"additionalProperties": false
},
"maxItems": 30,
"minItems": 1,
"description": "What the caller holds."
},
"amount_usd": {
"type": "number",
"minimum": 0.000001,
"description": "Amount to be paid, in USD."
},
"accepted_by_seller": {
"type": "array",
"items": {
"type": "object",
"required": [
"chain",
"asset"
],
"properties": {
"asset": {
"type": "string"
},
"chain": {
"type": "string"
},
"scheme": {
"type": "string",
"description": "Payment scheme, usually exact."
}
},
"additionalProperties": false
},
"maxItems": 30,
"minItems": 1,
"description": "What the seller accepts."
}
},
"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.",
"outputSchema": {
"type": "object"
},
"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.
0.005USDC≈ $0.005 USD
on Base · exact scheme
Pay 0.005 USDC on Base to 0x2880…C4E5E. The signed payment is good for 5 minutes.
- Paid to
- 0x2880…C4E5E
- USD Coin contract
- 0x8335…02913
- Payment window
- 5 minutes
- As published
- 5000 smallest units
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"asset": "USDC",
"version": "2",
"eip712Domain": {
"name": "USD Coin",
"chainId": 8453,
"version": "2",
"verifyingContract": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
},
"network_name": "Base Mainnet",
"assetTransferMethod": "eip3009"
},
"payTo": "0x2880EdfFF13100677Bf97A3CBdF3Bc34771C4E5E",
"amount": "5000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"body": {
"available": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"chain": "eip155:8453",
"balance": 0
}
],
"amount_usd": 0.000001,
"accepted_by_seller": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"chain": "eip155:8453",
"scheme": "beispiel"
}
]
},
"type": "http",
"method": "POST",
"bodyType": "json"
}
},
"schema": {
"type": "object",
"$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": [
"amount_usd",
"available",
"accepted_by_seller"
],
"properties": {
"priority": {
"enum": [
"guenstig",
"schnell",
"sicher"
],
"type": "string",
"default": "guenstig",
"description": "Which ranking to put first. All three are always returned."
},
"available": {
"type": "array",
"items": {
"type": "object",
"required": [
"chain",
"asset",
"balance"
],
"properties": {
"asset": {
"type": "string",
"description": "Asset address or symbol."
},
"chain": {
"type": "string",
"description": "CAIP-2 chain, for example eip155:8453."
},
"balance": {
"type": "number",
"minimum": 0,
"description": "Balance in USD equivalent."
}
},
"additionalProperties": false
},
"maxItems": 30,
"minItems": 1,
"description": "What the caller holds."
},
"amount_usd": {
"type": "number",
"minimum": 0.000001,
"description": "Amount to be paid, in USD."
},
"accepted_by_seller": {
"type": "array",
"items": {
"type": "object",
"required": [
"chain",
"asset"
],
"properties": {
"asset": {
"type": "string"
},
"chain": {
"type": "string"
},
"scheme": {
"type": "string",
"description": "Payment scheme, usually exact."
}
},
"additionalProperties": false
},
"maxItems": 30,
"minItems": 1,
"description": "What the seller accepts."
}
},
"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
- 2026-08-11 09:11Z
- Last indexed by Roundhouse
- 2026-09-10 09:00Z
- Last enriched (probe, favicon, geo)
- 2026-09-24 00:45Z
- 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 HALOWERK x402werk 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=HALOWERK%20x402werk' 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://x402.halowerk.com/route/optimize, 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.