Weather Ensemble
Twelve weather models compared hour by hour. Spread, agreement score, ensemble rain probability, frost and DWD warnings. Pay per call in USDC over x402.
InferenceLiveeip155:8453Exactvia cdp
x402HalowerkWeather_ensemble
Calls · 30d
3↑ 90%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 21 snapshots so far.
$11.47
Verified settled volume
2,654 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.
3
Calls · 30d
Upstream's own call count for this endpoint, not ours.
3
Unique payers · 30d
Last called 2026-09-19 16:01Z
—
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://wetter.halowerk.com/llms.txt",
"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://wetter.halowerk.com/pricing",
"resource": {
"url": "https://wetter.halowerk.com/ensemble",
"tags": [
"x402",
"halowerk",
"weather_ensemble"
],
"mimeType": "application/json",
"description": "Single models are everywhere. This is the disagreement between them: per hour a median with a p15/p85 band, the full min/max spread, how many models still carry that hour, an agreement score, rain probability derived from pooled ensemble members rather than one deterministic run, a frost assessment, and the official DWD warnings in force for the point.",
"inputSchema": {
"type": "object",
"required": [
"lat",
"lon"
],
"properties": {
"lat": {
"type": "number",
"maximum": 90,
"minimum": -90,
"description": "Latitude in decimal degrees."
},
"lon": {
"type": "number",
"maximum": 180,
"minimum": -180,
"description": "Longitude in decimal degrees."
},
"hours": {
"type": "integer",
"default": 24,
"maximum": 168,
"minimum": 1,
"description": "Forecast hours, up to 168 (seven days). Short range models drop out beyond their own horizon; the per hour \"models\" count shows it."
},
"models": {
"type": "array",
"items": {
"enum": [
"icon_d2",
"icon_eu",
"knmi_harmonie_arome_netherlands",
"dmi_seamless",
"meteofrance_seamless",
"ukmo_seamless",
"ecmwf_ifs025",
"ecmwf_aifs025_single",
"gfs_seamless",
"gem_seamless",
"jma_seamless",
"cma_grapes_global"
],
"type": "string"
},
"default": [
"icon_d2",
"icon_eu",
"knmi_harmonie_arome_netherlands",
"dmi_seamless",
"meteofrance_seamless",
"ukmo_seamless",
"ecmwf_ifs025",
"ecmwf_aifs025_single",
"gfs_seamless",
"gem_seamless",
"jma_seamless",
"cma_grapes_global"
],
"minItems": 2,
"description": "Restrict the comparison to a subset of the twelve models. At least two, because a comparison of one model is just a forecast."
},
"timezone": {
"type": "string",
"default": "UTC",
"description": "IANA zone name for the returned timestamps, for example Europe/Berlin."
},
"variables": {
"type": "array",
"items": {
"enum": [
"temperature_2m",
"apparent_temperature",
"dew_point_2m",
"relative_humidity_2m",
"precipitation",
"snowfall",
"cloud_cover",
"wind_speed_10m",
"wind_gusts_10m",
"surface_pressure",
"pressure_msl",
"shortwave_radiation",
"cape",
"wind_direction_10m",
"weather_code"
],
"type": "string"
},
"default": [
"temperature_2m",
"precipitation",
"wind_speed_10m"
],
"maxItems": 8,
"description": "Which variables to compare. wind_direction_10m is aggregated as a circular mean with a directional consensus, weather_code as a majority vote; every other variable gets median, p15, p85, min, max and spread."
}
}
},
"serviceName": "Weather Ensemble"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"lat": 52.21,
"lon": 7.02
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json"
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"type": "object",
"properties": {
"body": {
"type": "object",
"required": [
"lat",
"lon"
],
"properties": {
"lat": {
"type": "number",
"maximum": 90,
"minimum": -90,
"description": "Latitude in decimal degrees."
},
"lon": {
"type": "number",
"maximum": 180,
"minimum": -180,
"description": "Longitude in decimal degrees."
},
"hours": {
"type": "integer",
"default": 24,
"maximum": 168,
"minimum": 1,
"description": "Forecast hours, up to 168 (seven days). Short range models drop out beyond their own horizon; the per hour \"models\" count shows it."
},
"models": {
"type": "array",
"items": {
"enum": [
"icon_d2",
"icon_eu",
"knmi_harmonie_arome_netherlands",
"dmi_seamless",
"meteofrance_seamless",
"ukmo_seamless",
"ecmwf_ifs025",
"ecmwf_aifs025_single",
"gfs_seamless",
"gem_seamless",
"jma_seamless",
"cma_grapes_global"
],
"type": "string"
},
"default": [
"icon_d2",
"icon_eu",
"knmi_harmonie_arome_netherlands",
"dmi_seamless",
"meteofrance_seamless",
"ukmo_seamless",
"ecmwf_ifs025",
"ecmwf_aifs025_single",
"gfs_seamless",
"gem_seamless",
"jma_seamless",
"cma_grapes_global"
],
"minItems": 2,
"description": "Restrict the comparison to a subset of the twelve models. At least two, because a comparison of one model is just a forecast."
},
"timezone": {
"type": "string",
"default": "UTC",
"description": "IANA zone name for the returned timestamps, for example Europe/Berlin."
},
"variables": {
"type": "array",
"items": {
"enum": [
"temperature_2m",
"apparent_temperature",
"dew_point_2m",
"relative_humidity_2m",
"precipitation",
"snowfall",
"cloud_cover",
"wind_speed_10m",
"wind_gusts_10m",
"surface_pressure",
"pressure_msl",
"shortwave_radiation",
"cape",
"wind_direction_10m",
"weather_code"
],
"type": "string"
},
"default": [
"temperature_2m",
"precipitation",
"wind_speed_10m"
],
"maxItems": 8,
"description": "Which variables to compare. wind_direction_10m is aggregated as a circular mean with a directional consensus, weather_code as a majority vote; every other variable gets median, p15, p85, min, max and spread."
}
}
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"bodyType": {
"enum": [
"json"
],
"type": "string"
}
}
}
}
}
}
},
"price_usdc": "0.005",
"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.
0.005USDC≈ $0.005 USD
on Base · exact scheme
Pay 0.005 USDC on Base to 0x2880…C4E5E. The signed payment is good for 5 minutes.
- Paid to
- 0x2880…C4E5E
- USD Coin contract
- 0x8335…02913
- Payment window
- 5 minutes
- As published
- 5000 smallest units
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"asset": "USDC",
"version": "2",
"eip712Domain": {
"name": "USD Coin",
"chainId": 8453,
"version": "2",
"verifyingContract": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
},
"network_name": "Base Mainnet",
"assetTransferMethod": "eip3009"
},
"payTo": "0x2880EdfFF13100677Bf97A3CBdF3Bc34771C4E5E",
"amount": "5000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"body": {
"lat": 52.21,
"lon": 7.02
},
"type": "http",
"method": "POST",
"bodyType": "json"
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
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"type": "object",
"required": [
"type",
"method",
"bodyType",
"body"
],
"properties": {
"body": {
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"required": [
"lat",
"lon"
],
"properties": {
"lat": {
"type": "number",
"maximum": 90,
"minimum": -90,
"description": "Latitude in decimal degrees."
},
"lon": {
"type": "number",
"maximum": 180,
"minimum": -180,
"description": "Longitude in decimal degrees."
},
"hours": {
"type": "integer",
"default": 24,
"maximum": 168,
"minimum": 1,
"description": "Forecast hours, up to 168 (seven days). Short range models drop out beyond their own horizon; the per hour \"models\" count shows it."
},
"models": {
"type": "array",
"items": {
"enum": [
"icon_d2",
"icon_eu",
"knmi_harmonie_arome_netherlands",
"dmi_seamless",
"meteofrance_seamless",
"ukmo_seamless",
"ecmwf_ifs025",
"ecmwf_aifs025_single",
"gfs_seamless",
"gem_seamless",
"jma_seamless",
"cma_grapes_global"
],
"type": "string"
},
"default": [
"icon_d2",
"icon_eu",
"knmi_harmonie_arome_netherlands",
"dmi_seamless",
"meteofrance_seamless",
"ukmo_seamless",
"ecmwf_ifs025",
"ecmwf_aifs025_single",
"gfs_seamless",
"gem_seamless",
"jma_seamless",
"cma_grapes_global"
],
"minItems": 2,
"description": "Restrict the comparison to a subset of the twelve models. At least two, because a comparison of one model is just a forecast."
},
"timezone": {
"type": "string",
"default": "UTC",
"description": "IANA zone name for the returned timestamps, for example Europe/Berlin."
},
"variables": {
"type": "array",
"items": {
"enum": [
"temperature_2m",
"apparent_temperature",
"dew_point_2m",
"relative_humidity_2m",
"precipitation",
"snowfall",
"cloud_cover",
"wind_speed_10m",
"wind_gusts_10m",
"surface_pressure",
"pressure_msl",
"shortwave_radiation",
"cape",
"wind_direction_10m",
"weather_code"
],
"type": "string"
},
"default": [
"temperature_2m",
"precipitation",
"wind_speed_10m"
],
"maxItems": 8,
"description": "Which variables to compare. wind_direction_10m is aggregated as a circular mean with a directional consensus, weather_code as a majority vote; every other variable gets median, p15, p85, min, max and spread."
}
}
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"bodyType": {
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"json",
"form-data",
"text"
],
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}
},
"additionalProperties": false
}
}
}
}
}Provenance
- Seen in the source catalog
- 2026-09-19 16:01Z
- Last indexed by Roundhouse
- 2026-09-24 09:30Z
- Last enriched (probe, favicon, geo)
- 2026-09-12 02:45Z
- 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. 21 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 Weather Ensemble 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=Weather%20Ensemble' 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://wetter.halowerk.com/ensemble, 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.