natur.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.
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
2,654 settlements proven x402 by their on-chain EIP-3009 marker.
$0.0060
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 20:30Z
—
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://natur.halowerk.com/llms.txt",
"name": "volcanic_ash_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": "6000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
],
"pricing": "https://natur.halowerk.com/pricing",
"resource": {
"url": "https://natur.halowerk.com/v1/volcanic-ash-route",
"mimeType": "application/json",
"description": "Takes a route as an ordered list of waypoints, samples it at a chosen spacing and tests every sample against the currently active SIGMETs carrying a volcanic ash hazard. For each hit you get the affected segment as a from-to pair of waypoints, the SIGMET issuing centre and flight information region, the validity window, the reported base and top of the ash layer, and the raw text."
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"sample_km": 100,
"waypoints": [
{
"lat": 64.1,
"lon": -21.9,
"name": "BIKF"
},
{
"lat": 55.6,
"lon": 12.6,
"name": "EKCH"
}
]
},
"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": [
"waypoints"
],
"properties": {
"sample_km": {
"type": "number",
"default": 100,
"maximum": 500,
"minimum": 10,
"description": "Spacing at which the route is sampled."
},
"waypoints": {
"type": "array",
"items": {
"type": "object",
"required": [
"lat",
"lon"
],
"properties": {
"lat": {
"type": "number",
"maximum": 90,
"minimum": -90
},
"lon": {
"type": "number",
"maximum": 180,
"minimum": -180
},
"name": {
"type": "string",
"maxLength": 20
}
},
"additionalProperties": false
},
"maxItems": 40,
"minItems": 2,
"description": "Ordered route points."
},
"proximity_km": {
"type": "number",
"default": 150,
"maximum": 500,
"minimum": 10,
"description": "Distance at which a point-only SIGMET counts as nearby."
},
"cruise_level_ft": {
"type": "integer",
"maximum": 60000,
"minimum": 0,
"description": "If given, SIGMETs whose layer does not include this level are reported separately as not affecting you."
}
},
"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": "0.006",
"description": "Takes a route as an ordered list of waypoints, samples it at a chosen spacing and tests every sample against the currently active SIGMETs carrying a volcanic ash hazard. For each hit you get the affected segment as a from-to pair of waypoints, the SIGMET issuing centre and flight information region, the validity window, the reported base and top of the ash layer, and the raw text. The distinction the response insists on is between intersection and proximity: where the source supplies a polygon, the route is genuinely tested against it and the result is an intersection; where it supplies only a reference point, the distance is reported and the result is explicitly labelled as proximity rather than intersection, because treating the two alike would suggest a precision the data does not carry. Vertical extent is reported but not applied as a filter unless a cruising level is supplied, since an ash layer between twenty and thirty thousand feet is irrelevant to an aircraft above it and decisive to one climbing through. Advisory only: routing decisions belong to the operator and the responsible air navigation service.",
"inputSchema": {
"type": "object",
"required": [
"waypoints"
],
"properties": {
"sample_km": {
"type": "number",
"default": 100,
"maximum": 500,
"minimum": 10,
"description": "Spacing at which the route is sampled."
},
"waypoints": {
"type": "array",
"items": {
"type": "object",
"required": [
"lat",
"lon"
],
"properties": {
"lat": {
"type": "number",
"maximum": 90,
"minimum": -90
},
"lon": {
"type": "number",
"maximum": 180,
"minimum": -180
},
"name": {
"type": "string",
"maxLength": 20
}
},
"additionalProperties": false
},
"maxItems": 40,
"minItems": 2,
"description": "Ordered route points."
},
"proximity_km": {
"type": "number",
"default": 150,
"maximum": 500,
"minimum": 10,
"description": "Distance at which a point-only SIGMET counts as nearby."
},
"cruise_level_ft": {
"type": "integer",
"maximum": 60000,
"minimum": 0,
"description": "If given, SIGMETs whose layer does not include this level are reported separately as not affecting you."
}
},
"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.
0.006USDC≈ $0.006 USD
on Base · exact scheme
Pay 0.006 USDC on Base to 0x2880…C4E5E. The signed payment is good for 5 minutes.
- Paid to
- 0x2880…C4E5E
- USD Coin contract
- 0x8335…02913
- Payment window
- 5 minutes
- As published
- 6000 smallest units
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"asset": "USDC",
"version": "2",
"eip712Domain": {
"name": "USD Coin",
"chainId": 8453,
"version": "2",
"verifyingContract": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
},
"network_name": "Base Mainnet",
"assetTransferMethod": "eip3009"
},
"payTo": "0x2880EdfFF13100677Bf97A3CBdF3Bc34771C4E5E",
"amount": "6000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"body": {
"sample_km": 100,
"waypoints": [
{
"lat": 64.1,
"lon": -21.9,
"name": "BIKF"
},
{
"lat": 55.6,
"lon": 12.6,
"name": "EKCH"
}
]
},
"type": "http",
"method": "POST",
"bodyType": "json"
}
},
"schema": {
"type": "object",
"$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": [
"waypoints"
],
"properties": {
"sample_km": {
"type": "number",
"default": 100,
"maximum": 500,
"minimum": 10,
"description": "Spacing at which the route is sampled."
},
"waypoints": {
"type": "array",
"items": {
"type": "object",
"required": [
"lat",
"lon"
],
"properties": {
"lat": {
"type": "number",
"maximum": 90,
"minimum": -90
},
"lon": {
"type": "number",
"maximum": 180,
"minimum": -180
},
"name": {
"type": "string",
"maxLength": 20
}
},
"additionalProperties": false
},
"maxItems": 40,
"minItems": 2,
"description": "Ordered route points."
},
"proximity_km": {
"type": "number",
"default": 150,
"maximum": 500,
"minimum": 10,
"description": "Distance at which a point-only SIGMET counts as nearby."
},
"cruise_level_ft": {
"type": "integer",
"maximum": 60000,
"minimum": 0,
"description": "If given, SIGMETs whose layer does not include this level are reported separately as not affecting you."
}
},
"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 20:30Z
- Last indexed by Roundhouse
- 2026-09-10 20:30Z
- Last enriched (probe, favicon, geo)
- 2026-09-21 06:15Z
- 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. 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 natur.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=natur.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://natur.halowerk.com/v1/volcanic-ash-route, 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.