HALOWERK x402werk
A stateless rule check for agents that pay for x402 endpoints. You supply the proposed payment, your policy and the amounts already spent this hour and this day; this endpoint keeps no ledger of its own and returns your counters unchanged. Every configured rule — max_per_call, max_per_hour, max_per_day, allowed_chains, allowed_assets, allowed_recipients, blocked_recipients, require_schema — is reported individually as erfuellt, verletzt, nicht_pruefbar or nicht_gesetzt, together with the limit a
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. 15 snapshots so far.
$11.48
Verified settled volume
2,660 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 2026-08-09 18:19Z
—
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": "spend_policy",
"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://x402.halowerk.com/pricing",
"summary": "Checks one proposed x402 payment against your own spending rules and returns allow, reject or review with every rule listed separately, each with its limit and the actual value.",
"resource": {
"url": "https://x402.halowerk.com/policy/check",
"iconUrl": "https://x402.halowerk.com/favicon.svg",
"mimeType": "application/json",
"description": "A stateless rule check for agents that pay for x402 endpoints. You supply the proposed payment, your policy and the amounts already spent this hour and this day; this endpoint keeps no ledger of its own and returns your counters unchanged. Every configured rule — max_per_call, max_per_hour, max_per_day, allowed_chains, allowed_assets, allowed_recipients, blocked_recipients, require_schema — is reported individually as erfuellt, verletzt, nicht_pruefbar or nicht_gesetzt, together with the limit a",
"serviceName": "HALOWERK x402werk"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"policy": {
"max_per_day": "1000000",
"max_per_call": "1000000",
"max_per_hour": "1000000"
},
"proposed_payment": {
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"chain": "eip155:8453",
"amount_units": "1000000"
}
},
"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": [
"proposed_payment",
"policy"
],
"properties": {
"policy": {
"type": "object",
"properties": {
"max_per_day": {
"type": "string",
"pattern": "^[0-9]+(\\.[0-9]+)?$",
"description": "Largest allowed sum per day, in whole tokens."
},
"max_per_call": {
"type": "string",
"pattern": "^[0-9]+(\\.[0-9]+)?$",
"description": "Largest allowed single payment, in whole tokens of the proposed asset, for example \"0.05\"."
},
"max_per_hour": {
"type": "string",
"pattern": "^[0-9]+(\\.[0-9]+)?$",
"description": "Largest allowed sum per hour, in whole tokens."
},
"allowed_assets": {
"type": "array",
"items": {
"type": "string"
},
"description": "Token addresses you accept. Omit to allow any."
},
"allowed_chains": {
"type": "array",
"items": {
"type": "string"
},
"description": "Chains you accept, as CAIP-2 or short names. Omit to allow any."
},
"require_schema": {
"type": "boolean",
"description": "Whether the offer must declare an inputSchema."
},
"allowed_recipients": {
"type": "array",
"items": {
"type": "string"
},
"description": "Recipient addresses you accept. Omit to allow any; the recipient is then flagged as unverified."
},
"blocked_recipients": {
"type": "array",
"items": {
"type": "string"
},
"description": "Recipient addresses you refuse. Beats allowed_recipients on conflict."
}
},
"additionalProperties": false
},
"spent_so_far": {
"type": "object",
"properties": {
"day": {
"type": "string",
"pattern": "^[0-9]+(\\.[0-9]+)?$",
"description": "Already spent in the current day, in whole tokens."
},
"hour": {
"type": "string",
"pattern": "^[0-9]+(\\.[0-9]+)?$",
"description": "Already spent in the current hour, in whole tokens."
}
},
"additionalProperties": false
},
"proposed_payment": {
"type": "object",
"required": [
"amount_units"
],
"properties": {
"asset": {
"type": "string",
"description": "Token contract address, or \"native\" for the chain coin."
},
"chain": {
"type": "string",
"description": "Chain as CAIP-2 (\"eip155:8453\"), short name (\"base\") or chain id."
},
"pay_to": {
"type": "string",
"description": "Recipient address of the proposed payment."
},
"resource": {
"type": "string",
"maxLength": 2048,
"description": "URL of the resource being bought. Nothing is fetched; it is only checked for shape."
},
"amount_units": {
"type": "string",
"pattern": "^[0-9]{1,78}$",
"description": "Amount of the proposed payment as an integer in the smallest unit of the token."
},
"input_schema_present": {
"type": "boolean",
"description": "Whether the offer declares an inputSchema. Use Nr. 83 to find out if you do not know."
}
},
"additionalProperties": false
}
},
"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": "A stateless rule check for agents that pay for x402 endpoints. You supply the proposed payment, your policy and the amounts already spent this hour and this day; this endpoint keeps no ledger of its own and returns your counters unchanged. Every configured rule — max_per_call, max_per_hour, max_per_day, allowed_chains, allowed_assets, allowed_recipients, blocked_recipients, require_schema — is reported individually as erfuellt, verletzt, nicht_pruefbar or nicht_gesetzt, together with the limit and the actual value, so a rejection can be acted on. Amounts are compared exactly in the smallest unit of the token, using decimals resolved from a known-asset table or read from the chain; where decimals cannot be established the amount rules are reported as nicht_pruefbar and the decision becomes pruefen rather than a guess. risk_flags mark an unverifiable recipient, a missing input schema, a bridged instead of canonical token, an unusual or test chain and an amount above a fixed, stated threshold. Where two rules contradict each other the stricter one applies and the conflict is named. This endpoint does not pay, does not hold a budget, does not learn from previous calls and gives no advice on whether a price is fair.",
"inputSchema": {
"type": "object",
"required": [
"proposed_payment",
"policy"
],
"properties": {
"policy": {
"type": "object",
"properties": {
"max_per_day": {
"type": "string",
"pattern": "^[0-9]+(\\.[0-9]+)?$",
"description": "Largest allowed sum per day, in whole tokens."
},
"max_per_call": {
"type": "string",
"pattern": "^[0-9]+(\\.[0-9]+)?$",
"description": "Largest allowed single payment, in whole tokens of the proposed asset, for example \"0.05\"."
},
"max_per_hour": {
"type": "string",
"pattern": "^[0-9]+(\\.[0-9]+)?$",
"description": "Largest allowed sum per hour, in whole tokens."
},
"allowed_assets": {
"type": "array",
"items": {
"type": "string"
},
"description": "Token addresses you accept. Omit to allow any."
},
"allowed_chains": {
"type": "array",
"items": {
"type": "string"
},
"description": "Chains you accept, as CAIP-2 or short names. Omit to allow any."
},
"require_schema": {
"type": "boolean",
"description": "Whether the offer must declare an inputSchema."
},
"allowed_recipients": {
"type": "array",
"items": {
"type": "string"
},
"description": "Recipient addresses you accept. Omit to allow any; the recipient is then flagged as unverified."
},
"blocked_recipients": {
"type": "array",
"items": {
"type": "string"
},
"description": "Recipient addresses you refuse. Beats allowed_recipients on conflict."
}
},
"additionalProperties": false
},
"spent_so_far": {
"type": "object",
"properties": {
"day": {
"type": "string",
"pattern": "^[0-9]+(\\.[0-9]+)?$",
"description": "Already spent in the current day, in whole tokens."
},
"hour": {
"type": "string",
"pattern": "^[0-9]+(\\.[0-9]+)?$",
"description": "Already spent in the current hour, in whole tokens."
}
},
"additionalProperties": false
},
"proposed_payment": {
"type": "object",
"required": [
"amount_units"
],
"properties": {
"asset": {
"type": "string",
"description": "Token contract address, or \"native\" for the chain coin."
},
"chain": {
"type": "string",
"description": "Chain as CAIP-2 (\"eip155:8453\"), short name (\"base\") or chain id."
},
"pay_to": {
"type": "string",
"description": "Recipient address of the proposed payment."
},
"resource": {
"type": "string",
"maxLength": 2048,
"description": "URL of the resource being bought. Nothing is fetched; it is only checked for shape."
},
"amount_units": {
"type": "string",
"pattern": "^[0-9]{1,78}$",
"description": "Amount of the proposed payment as an integer in the smallest unit of the token."
},
"input_schema_present": {
"type": "boolean",
"description": "Whether the offer declares an inputSchema. Use Nr. 83 to find out if you do not know."
}
},
"additionalProperties": false
}
},
"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",
"properties": {
"amount": {
"type": "object"
},
"reasons": {
"type": "array",
"items": {
"type": "object",
"properties": {
"wert": {
"type": [
"string",
"null"
]
},
"regel": {
"type": "string"
},
"grenze": {
"type": [
"string",
"null"
]
},
"hinweis": {
"type": [
"string",
"null"
]
},
"ergebnis": {
"enum": [
"erfuellt",
"verletzt",
"nicht_pruefbar",
"nicht_gesetzt"
],
"type": "string"
}
}
}
},
"decision": {
"enum": [
"erlauben",
"ablehnen",
"pruefen"
],
"type": "string"
},
"conflicts": {
"type": "array",
"items": {
"type": "object"
}
},
"remaining": {
"type": "object"
},
"risk_flags": {
"type": "array",
"items": {
"type": "object"
}
},
"would_exceed": {
"type": "object"
},
"thresholds_used": {
"type": "object"
},
"unavailable_fields": {
"type": "array",
"items": {
"type": "string"
}
}
}
},
"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≈ $0.002 USD
on Base · exact scheme
Pay 0.002 USDC on Base to 0x2880…C4E5E. The signed payment is good for 5 minutes.
- Paid to
- 0x2880…C4E5E
- USD Coin contract
- 0x8335…02913
- Payment window
- 5 minutes
- As published
- 2000 smallest units
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"asset": "USDC",
"version": "2",
"eip712Domain": {
"name": "USD Coin",
"chainId": 8453,
"version": "2",
"verifyingContract": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
},
"network_name": "Base Mainnet",
"assetTransferMethod": "eip3009"
},
"payTo": "0x2880EdfFF13100677Bf97A3CBdF3Bc34771C4E5E",
"amount": "2000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"body": {
"policy": {
"max_per_day": "1000000",
"max_per_call": "1000000",
"max_per_hour": "1000000"
},
"proposed_payment": {
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"chain": "eip155:8453",
"amount_units": "1000000"
}
},
"type": "http",
"method": "POST",
"bodyType": "json"
}
},
"schema": {
"type": "object",
"$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": [
"proposed_payment",
"policy"
],
"properties": {
"policy": {
"type": "object",
"properties": {
"max_per_day": {
"type": "string",
"pattern": "^[0-9]+(\\.[0-9]+)?$",
"description": "Largest allowed sum per day, in whole tokens."
},
"max_per_call": {
"type": "string",
"pattern": "^[0-9]+(\\.[0-9]+)?$",
"description": "Largest allowed single payment, in whole tokens of the proposed asset, for example \"0.05\"."
},
"max_per_hour": {
"type": "string",
"pattern": "^[0-9]+(\\.[0-9]+)?$",
"description": "Largest allowed sum per hour, in whole tokens."
},
"allowed_assets": {
"type": "array",
"items": {
"type": "string"
},
"description": "Token addresses you accept. Omit to allow any."
},
"allowed_chains": {
"type": "array",
"items": {
"type": "string"
},
"description": "Chains you accept, as CAIP-2 or short names. Omit to allow any."
},
"require_schema": {
"type": "boolean",
"description": "Whether the offer must declare an inputSchema."
},
"allowed_recipients": {
"type": "array",
"items": {
"type": "string"
},
"description": "Recipient addresses you accept. Omit to allow any; the recipient is then flagged as unverified."
},
"blocked_recipients": {
"type": "array",
"items": {
"type": "string"
},
"description": "Recipient addresses you refuse. Beats allowed_recipients on conflict."
}
},
"additionalProperties": false
},
"spent_so_far": {
"type": "object",
"properties": {
"day": {
"type": "string",
"pattern": "^[0-9]+(\\.[0-9]+)?$",
"description": "Already spent in the current day, in whole tokens."
},
"hour": {
"type": "string",
"pattern": "^[0-9]+(\\.[0-9]+)?$",
"description": "Already spent in the current hour, in whole tokens."
}
},
"additionalProperties": false
},
"proposed_payment": {
"type": "object",
"required": [
"amount_units"
],
"properties": {
"asset": {
"type": "string",
"description": "Token contract address, or \"native\" for the chain coin."
},
"chain": {
"type": "string",
"description": "Chain as CAIP-2 (\"eip155:8453\"), short name (\"base\") or chain id."
},
"pay_to": {
"type": "string",
"description": "Recipient address of the proposed payment."
},
"resource": {
"type": "string",
"maxLength": 2048,
"description": "URL of the resource being bought. Nothing is fetched; it is only checked for shape."
},
"amount_units": {
"type": "string",
"pattern": "^[0-9]{1,78}$",
"description": "Amount of the proposed payment as an integer in the smallest unit of the token."
},
"input_schema_present": {
"type": "boolean",
"description": "Whether the offer declares an inputSchema. Use Nr. 83 to find out if you do not know."
}
},
"additionalProperties": false
}
},
"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
- 2026-08-09 18:19Z
- Last indexed by Roundhouse
- 2026-09-08 18:00Z
- Last enriched (probe, favicon, geo)
- 2026-09-20 18:45Z
- 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. 15 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/policy/check, 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.