natur.halowerk.com

Name: natur.halowerk.com
Price: 0.005 USDC
Availability: InStock

HALOWERK provides paid endpoints that AI agents call and pay for per request via x402 on Base. No account, no API key, no signup.

OtherLiveeip155:8453Exactvia cdp

https://natur.halowerk.com/v1/runway-crosswind

Calls · 30d

1→ 0%

This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 17 snapshots so far.

$11.50

Verified settled volume

2,672 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.

Calls · 30d

Upstream's own call count for this endpoint, not ours.

Unique payers · 30d

Last called 2026-08-11 20:30Z

—

Upstream on-chain volume

Reported by the source catalog.

Paid to

0x2880EdfFF13100677Bf97A3CBdF3Bc34771C4E5E

The 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": "runway_crosswind",
  "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://natur.halowerk.com/pricing",
  "resource": {
    "url": "https://natur.halowerk.com/v1/runway-crosswind",
    "mimeType": "application/json",
    "description": "Combines the current wind at an airport with the bearings of its runways to give, per runway direction, the headwind or tailwind component and the crosswind component. Runway geometry comes from OpenStreetMap, where runways carry an explicit bearing or one derived from their designator, and both the source and the derivation are stated per runway because a designator gives the bearing only to the nearest ten degrees."
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "airport": "EDDB",
            "crosswind_limit_kt": 25
          },
          "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": [
                  "airport"
                ],
                "properties": {
                  "airport": {
                    "type": "string",
                    "maxLength": 4,
                    "minLength": 3,
                    "description": "ICAO code."
                  },
                  "tailwind_limit_kt": {
                    "type": "number",
                    "default": 10,
                    "maximum": 20,
                    "minimum": 0
                  },
                  "crosswind_limit_kt": {
                    "type": "number",
                    "maximum": 60,
                    "minimum": 5,
                    "description": "Your aircraft crosswind limit. Each runway is then marked within or over limit."
                  }
                },
                "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": "Combines the current wind at an airport with the bearings of its runways to give, per runway direction, the headwind or tailwind component and the crosswind component. Runway geometry comes from OpenStreetMap, where runways carry an explicit bearing or one derived from their designator, and both the source and the derivation are stated per runway because a designator gives the bearing only to the nearest ten degrees. Gusts are evaluated as a second, separate case rather than averaged into the steady wind: aircraft crosswind limits are stated against the gust, so computing only from the mean removes the number that actually matters. When the observation reports variable wind direction, or reports no direction at all, the components are returned as null with the reason given rather than computed from an assumed heading — a plausible-looking crosswind figure derived from a direction nobody measured is worse than an honest gap. The best runway by lowest crosswind and the best by highest headwind are both named, since they are frequently not the same one.",
  "inputSchema": {
    "type": "object",
    "required": [
      "airport"
    ],
    "properties": {
      "airport": {
        "type": "string",
        "maxLength": 4,
        "minLength": 3,
        "description": "ICAO code."
      },
      "tailwind_limit_kt": {
        "type": "number",
        "default": 10,
        "maximum": 20,
        "minimum": 0
      },
      "crosswind_limit_kt": {
        "type": "number",
        "maximum": 60,
        "minimum": 5,
        "description": "Your aircraft crosswind limit. Each runway is then marked within or over limit."
      }
    },
    "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.

0.005USDC≈ $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": {
          "airport": "EDDB",
          "crosswind_limit_kt": 25
        },
        "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": [
                "airport"
              ],
              "properties": {
                "airport": {
                  "type": "string",
                  "maxLength": 4,
                  "minLength": 3,
                  "description": "ICAO code."
                },
                "tailwind_limit_kt": {
                  "type": "number",
                  "default": 10,
                  "maximum": 20,
                  "minimum": 0
                },
                "crosswind_limit_kt": {
                  "type": "number",
                  "maximum": 60,
                  "minimum": 5,
                  "description": "Your aircraft crosswind limit. Each runway is then marked within or over limit."
                }
              },
              "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

Report

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. 17 snapshots so far. Verified volume counts only settlements with an on-chain EIP-3009 marker.

Open skill.md

Show 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/runway-crosswind, 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.