aviationapis
Compute the crosswind and headwind/tailwind components for a runway given the runway heading and the wind direction and speed. Returns the angle off the nose, the headwind component (negative for a tailwind), the crosswind magnitude, and which side the crosswind comes from. Deterministic; no lookup.
The wallet the 402 directs payment to. Its whole payment record — every payer, every chain — is on the merchant page.
Asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
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.
Accepts
The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.
That figure is in the token’s smallest units. Roundhouse does not hold this contract’s decimals, so it is shown as published rather than converted.
- Paid to
- HJfYcc…QaoJe
- Token contract
- EPjFWd…TDt1v
- Payment window
- 1 minute
Pay 0.01 USDC on Base to 0x954c…05555. The signed payment is good for 1 minute.
- Paid to
- 0x954c…05555
- USD Coin contract
- 0x8335…02913
- Payment window
- 1 minute
- As published
- 10000 smallest units
That figure is in the token’s smallest units. Roundhouse does not hold this contract’s decimals, so it is shown as published rather than converted.
- Paid to
- 0x954c…05555
- Token contract
- 0x3c49…c3359
- Payment window
- 1 minute
The catalog’s raw entry
[
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "D6ZhtNQ5nT9ZnTHUbqXZsTx5MH2rPFiBBggX4hY1WePM"
},
"payTo": "HJfYcc2XtmrLgr4kze6kdp1JNHsqrdfJiHucpKNQaoJe",
"amount": "10000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 60
},
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x954c90740b8247e4b0d4a3f92201167895405555",
"amount": "10000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 60
},
{
"asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x954c90740b8247e4b0d4a3f92201167895405555",
"amount": "10000",
"scheme": "exact",
"network": "eip155:137",
"maxTimeoutSeconds": 60
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"body": {
"wind_speed_kt": 18,
"runway_heading_deg": 280,
"wind_direction_deg": 310
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"tailwind": false,
"headwind_kt": 15.6,
"crosswind_kt": 9,
"wind_speed_kt": 18,
"crosswind_from": "right",
"angle_off_nose_deg": 30,
"runway_heading_deg": 280,
"wind_direction_deg": 310
}
}
},
"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": [
"runway_heading_deg",
"wind_direction_deg",
"wind_speed_kt"
],
"properties": {
"wind_speed_kt": {
"type": "number",
"description": "Wind speed in knots"
},
"runway_heading_deg": {
"type": "number",
"description": "Runway magnetic/true heading in degrees (e.g. 280 for runway 28)"
},
"wind_direction_deg": {
"type": "number",
"description": "Wind direction in degrees"
}
}
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"properties": {
"tailwind": {
"type": "boolean"
},
"headwind_kt": {
"type": "number",
"description": "Negative means a tailwind"
},
"crosswind_kt": {
"type": "number",
"description": "Magnitude of the crosswind component"
},
"wind_speed_kt": {
"type": "number"
},
"crosswind_from": {
"enum": [
"left",
"right",
"none"
],
"type": "string"
},
"angle_off_nose_deg": {
"type": "number",
"description": "0 = down the runway, 180 = on the tail"
},
"runway_heading_deg": {
"type": "number"
},
"wind_direction_deg": {
"type": "number"
}
}
}
}
}
}
}
}
}Provenance
- Seen in the source catalog
- 2026-06-02 14:23Z
- Last indexed by Roundhouse
- 2026-06-11 02:40Z
- Last enriched (probe, favicon, geo)
- 2026-09-21 11:45Z
- x402 version
- 2
- Max timeout
- 60s
- Liveness probe
- HTTP 404
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
Nothing indexed for this service or its provider yet. Not a claim that it is unused — only that we hold no record. Verified volume counts only settlements with an on-chain EIP-3009 marker.
Show the promptHide the prompt
Using Roundhouse, look up the x402 service aviationapis 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=aviationapis' 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://aviationapis.com/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.