HALOWERK marktwerk
Measures the state of one pair over the chosen horizon from the minute candles this hub records itself: annualized realized volatility from log returns, trend strength as path efficiency between -1 and +1, average true range, and the drawdown from the highest high in the window. regime is a classification with its rule fully disclosed, and reasoning lists the values that carried it as data, not as prose. vol_percentile_90d needs ninety days of own history; until that exists the field stays null
InferenceLiveeip155:8453Exactvia 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
2,658 settlements proven x402 by their on-chain EIP-3009 marker.
$0.0030
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://markt.halowerk.com/llms.txt",
"name": "volatility_regime",
"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": "3000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
],
"pricing": "https://markt.halowerk.com/pricing",
"summary": "Realized volatility, trend strength, ATR and drawdown from the high over a chosen horizon, computed on this hub own minute history, with a stated regime and every threshold and formula in the answer.",
"resource": {
"url": "https://markt.halowerk.com/regime",
"iconUrl": "https://markt.halowerk.com/favicon.svg",
"mimeType": "application/json",
"description": "Measures the state of one pair over the chosen horizon from the minute candles this hub records itself: annualized realized volatility from log returns, trend strength as path efficiency between -1 and +1, average true range, and the drawdown from the highest high in the window. regime is a classification with its rule fully disclosed, and reasoning lists the values that carried it as data, not as prose. vol_percentile_90d needs ninety days of own history; until that exists the field stays null ",
"serviceName": "HALOWERK marktwerk"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"symbol": "BTC/USDT"
},
"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": [
"symbol"
],
"properties": {
"venue": {
"enum": [
"binance",
"coinbase",
"kraken",
"okx",
"bybit"
],
"type": "string",
"default": "binance",
"description": "Exchange whose recorded history is used."
},
"symbol": {
"type": "string",
"pattern": "^[A-Za-z0-9]{2,15}/[A-Za-z0-9]{2,15}$",
"description": "Pair as BASE/QUOTE. Only pairs the collector watches can be answered."
},
"horizon": {
"enum": [
"1h",
"4h",
"1d",
"1w"
],
"type": "string",
"default": "1d",
"description": "Measurement window."
}
},
"additionalProperties": false
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"POST",
"PUT",
"PATCH"
],
"type": "string"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
}
},
"additionalProperties": false
}
}
}
}
},
"price_usdc": "0.003",
"description": "Measures the state of one pair over the chosen horizon from the minute candles this hub records itself: annualized realized volatility from log returns, trend strength as path efficiency between -1 and +1, average true range, and the drawdown from the highest high in the window. regime is a classification with its rule fully disclosed, and reasoning lists the values that carried it as data, not as prose. vol_percentile_90d needs ninety days of own history; until that exists the field stays null and history_days states how far the record actually reaches, with confidence set to niedrig below thirty days. There is no forecast and no price target here: the endpoint describes the state, not the future.",
"inputSchema": {
"type": "object",
"required": [
"symbol"
],
"properties": {
"venue": {
"enum": [
"binance",
"coinbase",
"kraken",
"okx",
"bybit"
],
"type": "string",
"default": "binance",
"description": "Exchange whose recorded history is used."
},
"symbol": {
"type": "string",
"pattern": "^[A-Za-z0-9]{2,15}/[A-Za-z0-9]{2,15}$",
"description": "Pair as BASE/QUOTE. Only pairs the collector watches can be answered."
},
"horizon": {
"enum": [
"1h",
"4h",
"1d",
"1w"
],
"type": "string",
"default": "1d",
"description": "Measurement window."
}
},
"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": {
"atr": {
"type": [
"number",
"null"
]
},
"venue": {
"type": "string"
},
"age_ms": {
"type": "integer"
},
"regime": {
"type": "string"
},
"symbol": {
"type": "string"
},
"window": {
"type": "object"
},
"atr_bps": {
"type": [
"number",
"null"
]
},
"hinweis": {
"type": "string"
},
"horizon": {
"type": "string"
},
"samples": {
"type": "integer"
},
"formulas": {
"type": "object"
},
"reasoning": {
"type": "array",
"items": {
"type": "object"
}
},
"confidence": {
"type": "string"
},
"ts_fetched": {
"type": "integer"
},
"history_days": {
"type": "number"
},
"realized_vol": {
"type": [
"number",
"null"
]
},
"trend_strength": {
"type": [
"number",
"null"
]
},
"thresholds_used": {
"type": "object"
},
"drawdown_from_high": {
"type": [
"number",
"null"
]
},
"unavailable_fields": {
"type": "array",
"items": {
"type": "string"
}
},
"vol_percentile_90d": {
"type": "null"
},
"vol_percentile_reason": {
"type": "string"
},
"realized_vol_window_pct": {
"type": [
"number",
"null"
]
}
}
},
"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.
0.003USDC≈ $0.003 USD
on Base · exact scheme
Pay 0.003 USDC on Base to 0x2880…C4E5E. The signed payment is good for 5 minutes.
- Paid to
- 0x2880…C4E5E
- USD Coin contract
- 0x8335…02913
- Payment window
- 5 minutes
- As published
- 3000 smallest units
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"asset": "USDC",
"version": "2",
"eip712Domain": {
"name": "USD Coin",
"chainId": 8453,
"version": "2",
"verifyingContract": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
},
"network_name": "Base Mainnet",
"assetTransferMethod": "eip3009"
},
"payTo": "0x2880EdfFF13100677Bf97A3CBdF3Bc34771C4E5E",
"amount": "3000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"body": {
"symbol": "BTC/USDT"
},
"type": "http",
"method": "POST",
"bodyType": "json"
}
},
"schema": {
"type": "object",
"$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": [
"symbol"
],
"properties": {
"venue": {
"enum": [
"binance",
"coinbase",
"kraken",
"okx",
"bybit"
],
"type": "string",
"default": "binance",
"description": "Exchange whose recorded history is used."
},
"symbol": {
"type": "string",
"pattern": "^[A-Za-z0-9]{2,15}/[A-Za-z0-9]{2,15}$",
"description": "Pair as BASE/QUOTE. Only pairs the collector watches can be answered."
},
"horizon": {
"enum": [
"1h",
"4h",
"1d",
"1w"
],
"type": "string",
"default": "1d",
"description": "Measurement window."
}
},
"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 19:15Z
- 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. 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 marktwerk 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%20marktwerk' 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://markt.halowerk.com/regime, 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.