Aviation Calculators
Glide distance, time and sink rate from altitude above ground, glide ratio and best-glide speed, with headwind or tailwind.
OtherLiveeip155:8453Exactvia cdp
AviationGlideEngine-outPerformanceCalculator
Calls · 30d
1
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 4 snapshots so far.
$24.31
Verified settled volume
1,175 settlements proven x402 by their on-chain EIP-3009 marker.
$0.020
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 2026-10-20 20:33Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0xb531320805C5BED1D46AEaDcF4F008FDF172DBDaThe 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.
{
"error": "Payment required",
"accepts": [
{
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"extra": {
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"version": "2"
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"payTo": "0xb531320805C5BED1D46AEaDcF4F008FDF172DBDa",
"scheme": "exact",
"network": "base",
"mimeType": "application/json",
"resource": "https://aviation-calc.x402tookit.com/glide-ratio",
"description": "Glide distance, time and sink rate from altitude above ground, glide ratio and best-glide speed, with headwind or tailwind.",
"outputSchema": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"glideRatio": 9,
"headwindKt": 20,
"glideSpeedKt": 65,
"altitudeAglFt": 5000
}
},
"output": {
"asOf": "2026-10-11T14:44:08.322Z",
"source": "computed locally",
"reasons": [
"Distance = height x glide ratio; sink rate = true airspeed / glide ratio; with wind, ground distance scales by groundspeed / airspeed.",
"1 knot = 101.27 ft/min; 1 nm = 6076.1 ft."
],
"summary": "From 5000 ft at 9:1 the aircraft glides 7.4 nm (13.7 km) in still air. Sink rate 731 ft/min, 6.8 minutes aloft; with a 20 kt headwind the groundspeed is 45 kt and the distance 5.1 nm.",
"verdict": "COMPUTED",
"degraded": false,
"disclaimer": "Screening signal computed from the named public source. Not financial, legal or investment advice; provided as is. Verify at the source before acting.",
"glideRatio": 9,
"headwindKt": 20,
"notChecked": [
"real glide performance: the published ratio holds only at best-glide speed with a feathered or stopped propeller and clean configuration; wind, turns, turbulence, sink and weight change it a lot",
"the time to set up, troubleshoot and choose a field: allow height for the pattern and landing",
"…2 more"
],
"sinkRateFpm": 731,
"glideSpeedKt": 65,
"glideTimeMin": 6.84,
"altitudeAglFt": 5000,
"groundspeedKt": 45,
"glideDistanceFtStillAir": 45000,
"glideDistanceKmStillAir": 13.72,
"glideDistanceNmStillAir": 7.41,
"glideDistanceNmWithWind": 5.13,
"effectiveGroundGlideRatio": 6.23,
"glideDistanceStatuteMilesStillAir": 8.52
}
},
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"resource": "https://aviation-calc.x402tookit.com/glide-ratio",
"description": "Glide distance, time and sink rate from altitude above ground, glide ratio and best-glide speed, with headwind or tailwind.",
"outputSchema": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"glideRatio": 9,
"headwindKt": 20,
"glideSpeedKt": 65,
"altitudeAglFt": 5000
}
},
"output": {
"asOf": "2026-10-11T14:44:08.322Z",
"source": "computed locally",
"reasons": [
"Distance = height x glide ratio; sink rate = true airspeed / glide ratio; with wind, ground distance scales by groundspeed / airspeed.",
"1 knot = 101.27 ft/min; 1 nm = 6076.1 ft."
],
"summary": "From 5000 ft at 9:1 the aircraft glides 7.4 nm (13.7 km) in still air. Sink rate 731 ft/min, 6.8 minutes aloft; with a 20 kt headwind the groundspeed is 45 kt and the distance 5.1 nm.",
"verdict": "COMPUTED",
"degraded": false,
"disclaimer": "Screening signal computed from the named public source. Not financial, legal or investment advice; provided as is. Verify at the source before acting.",
"glideRatio": 9,
"headwindKt": 20,
"notChecked": [
"real glide performance: the published ratio holds only at best-glide speed with a feathered or stopped propeller and clean configuration; wind, turns, turbulence, sink and weight change it a lot",
"the time to set up, troubleshoot and choose a field: allow height for the pattern and landing",
"…2 more"
],
"sinkRateFpm": 731,
"glideSpeedKt": 65,
"glideTimeMin": 6.84,
"altitudeAglFt": 5000,
"groundspeedKt": 45,
"glideDistanceFtStillAir": 45000,
"glideDistanceKmStillAir": 13.72,
"glideDistanceNmStillAir": 7.41,
"glideDistanceNmWithWind": 5.13,
"effectiveGroundGlideRatio": 6.23,
"glideDistanceStatuteMilesStillAir": 8.52
}
},
"maxAmountRequired": "20000",
"maxTimeoutSeconds": 300
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"extra": {
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"outputSchema": {
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"glideRatio": 9,
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"glideSpeedKt": 65,
"altitudeAglFt": 5000
}
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"output": {
"asOf": "2026-10-11T14:44:08.322Z",
"source": "computed locally",
"reasons": [
"Distance = height x glide ratio; sink rate = true airspeed / glide ratio; with wind, ground distance scales by groundspeed / airspeed.",
"1 knot = 101.27 ft/min; 1 nm = 6076.1 ft."
],
"summary": "From 5000 ft at 9:1 the aircraft glides 7.4 nm (13.7 km) in still air. Sink rate 731 ft/min, 6.8 minutes aloft; with a 20 kt headwind the groundspeed is 45 kt and the distance 5.1 nm.",
"verdict": "COMPUTED",
"degraded": false,
"disclaimer": "Screening signal computed from the named public source. Not financial, legal or investment advice; provided as is. Verify at the source before acting.",
"glideRatio": 9,
"headwindKt": 20,
"notChecked": [
"real glide performance: the published ratio holds only at best-glide speed with a feathered or stopped propeller and clean configuration; wind, turns, turbulence, sink and weight change it a lot",
"the time to set up, troubleshoot and choose a field: allow height for the pattern and landing",
"…2 more"
],
"sinkRateFpm": 731,
"glideSpeedKt": 65,
"glideTimeMin": 6.84,
"altitudeAglFt": 5000,
"groundspeedKt": 45,
"glideDistanceFtStillAir": 45000,
"glideDistanceKmStillAir": 13.72,
"glideDistanceNmStillAir": 7.41,
"glideDistanceNmWithWind": 5.13,
"effectiveGroundGlideRatio": 6.23,
"glideDistanceStatuteMilesStillAir": 8.52
}
},
"maxAmountRequired": "20000",
"maxTimeoutSeconds": 300
}
],
"x402Version": 1,
"alsoAvailable": {
"llms": "https://aviation-calc.x402tookit.com/llms.txt",
"catalog": "https://aviation-calc.x402tookit.com/catalog",
"message": "Aviation Calculators has 9 pay-per-call endpoints (Pilot math from your own numbers: pressure and density altitude, ISA, true airspeed, wind components, wind triangle, fuel and time, glide and turns.), from $0.02 a call. See the full menu and send your agents our way.",
"openapi": "https://aviation-calc.x402tookit.com/openapi.json",
"related": [
{
"url": "https://aviation-calc.x402tookit.com/density-altitude",
"path": "/density-altitude",
"what": "Density altitude from field elevation, altimeter setting and temperature, exact and by ru…",
"price": "$0.02"
},
{
"url": "https://aviation-calc.x402tookit.com/isa-atmosphere",
"path": "/isa-atmosphere",
"what": "Standard atmosphere at an altitude: temperature, pressure, density, sound speed, and ISA…",
"price": "$0.02"
},
{
"url": "https://aviation-calc.x402tookit.com/pressure-altitude",
"path": "/pressure-altitude",
"what": "Pressure altitude from field elevation and altimeter setting (inHg or hPa), exact ISA res…",
"price": "$0.02"
}
]
}
}Accepts
The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.
0.02USDC≈ $0.02 USD
on Base · exact scheme
Pay 0.02 USDC on Base to 0xb531…2DBDa. The signed payment is good for 5 minutes.
- Paid to
- 0xb531…2DBDa
- USD Coin contract
- 0x8335…02913
- Payment window
- 5 minutes
- As published
- 20000 smallest units
20000units
on solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp · exact scheme
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
- DUPiup…eEm8s
- Token contract
- EPjFWd…TDt1v
- Payment window
- 5 minutes
20000units
on Polygon · exact scheme
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
- 0xb531…2DBDa
- Token contract
- 0x3c49…c3359
- Payment window
- 5 minutes
20000units
on Arbitrum · exact scheme
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
- 0xb531…2DBDa
- Token contract
- 0xaf88…e5831
- Payment window
- 5 minutes
The catalog’s raw entry
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"amount": "20000",
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"network": "eip155:42161",
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]Extensions
{
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"glideRatio": 9,
"headwindKt": 20,
"glideSpeedKt": 65,
"altitudeAglFt": 5000
}
},
"output": {
"type": "json",
"example": {
"asOf": "2026-10-11T14:44:08.322Z",
"source": "computed locally",
"reasons": [
"Distance = height x glide ratio; sink rate = true airspeed / glide ratio; with wind, ground distance scales by groundspeed / airspeed.",
"1 knot = 101.27 ft/min; 1 nm = 6076.1 ft."
],
"summary": "From 5000 ft at 9:1 the aircraft glides 7.4 nm (13.7 km) in still air. Sink rate 731 ft/min, 6.8 minutes aloft; with a 20 kt headwind the groundspeed is 45 kt and the distance 5.1 nm.",
"verdict": "COMPUTED",
"degraded": false,
"disclaimer": "Screening signal computed from the named public source. Not financial, legal or investment advice; provided as is. Verify at the source before acting.",
"glideRatio": 9,
"headwindKt": 20,
"notChecked": [
"real glide performance: the published ratio holds only at best-glide speed with a feathered or stopped propeller and clean configuration; wind, turns, turbulence, sink and weight change it a lot",
"the time to set up, troubleshoot and choose a field: allow height for the pattern and landing",
"…2 more"
],
"sinkRateFpm": 731,
"glideSpeedKt": 65,
"glideTimeMin": 6.84,
"altitudeAglFt": 5000,
"groundspeedKt": 45,
"glideDistanceFtStillAir": 45000,
"glideDistanceKmStillAir": 13.72,
"glideDistanceNmStillAir": 7.41,
"glideDistanceNmWithWind": 5.13,
"effectiveGroundGlideRatio": 6.23,
"glideDistanceStatuteMilesStillAir": 8.52
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
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"type": "object",
"required": [
"type",
"method"
],
"properties": {
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"type": "object",
"required": [
"altitudeAglFt",
"glideRatio"
],
"properties": {
"glideRatio": {
"type": "number",
"description": "Lift-to-drag glide ratio, for example 9 for 9 to 1 (a light single is about 9, a sailplane 30 to 60)"
},
"headwindKt": {
"type": "number",
"description": "Headwind in knots, negative for a tailwind, -100 to 100 (needs glideSpeedKt)"
},
"glideSpeedKt": {
"type": "number",
"description": "True airspeed at best glide in knots, 20 to 300, for time, sink rate and wind"
},
"altitudeAglFt": {
"type": "number",
"description": "Height above the ground in feet, 100 to 60000"
}
}
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"properties": {
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"string"
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"string"
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"summary": {
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"string"
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"verdict": {
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"degraded": {
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},
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"string"
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"glideRatio": {
"type": [
"null",
"number"
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},
"headwindKt": {
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"number"
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},
"notChecked": {
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},
"sinkRateFpm": {
"type": [
"null",
"number"
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},
"glideSpeedKt": {
"type": [
"null",
"number"
]
},
"glideTimeMin": {
"type": [
"null",
"number"
]
},
"altitudeAglFt": {
"type": [
"null",
"number"
]
},
"groundspeedKt": {
"type": [
"null",
"number"
]
},
"glideDistanceFtStillAir": {
"type": [
"null",
"number"
]
},
"glideDistanceKmStillAir": {
"type": [
"null",
"number"
]
},
"glideDistanceNmStillAir": {
"type": [
"null",
"number"
]
},
"glideDistanceNmWithWind": {
"type": [
"null",
"number"
]
},
"effectiveGroundGlideRatio": {
"type": [
"null",
"number"
]
},
"glideDistanceStatuteMilesStillAir": {
"type": [
"null",
"number"
]
}
}
}
}
}
}
}
}
}Provenance
- Seen in the source catalog
- 2026-10-20 20:33Z
- Last indexed by Roundhouse
- 2026-10-22 06:50Z
- Last enriched (probe, favicon, geo)
- 2026-10-21 00:15Z
- 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. 4 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 Aviation Calculators 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=Aviation%20Calculators' 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://aviation-calc.x402tookit.com/glide-ratio, 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. Either pay over x402 (mint a personal key for $0.01 at GET https://api.roundhouseai.io/v0/test/x402), or ask me for an organization key, which I create at https://roundhouseai.io/dashboard/connections. If you have neither, ask before going further. If you do not have Roundhouse tools or skills installed, read https://roundhouseai.io/skill.md first — it is the whole procedure.