Garden Calculators
Growing degree days from daily lows and highs with a base temperature and upper cutoff: daily and cumulative totals.
OtherLiveeip155:8453Exactvia cdp
GardenGddAgricultureTemperatureCalculator
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 20:28Z
—
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.
{
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"accepts": [
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"payTo": "0xb531320805C5BED1D46AEaDcF4F008FDF172DBDa",
"scheme": "exact",
"network": "base",
"mimeType": "application/json",
"resource": "https://garden-calc.x402tookit.com/growing-degree-days",
"description": "Growing degree days from daily lows and highs with a base temperature and upper cutoff: daily and cumulative totals.",
"outputSchema": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"crop": "corn",
"days": "48:72; 52:80; 55:88; 40:70",
"unit": "f"
}
},
"output": {
"asOf": "2026-10-11T20:20:03.262Z",
"days": [
{
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"gdd": 11,
"max": 72,
"min": 48,
"cumulativeGdd": 11,
"simpleAverageGdd": 10
},
{
"day": 2,
"gdd": 16,
"max": 80,
"min": 52,
"cumulativeGdd": 27,
"simpleAverageGdd": 16
}
],
"unit": "f",
"method": "modified (cutoff): minimum raised to the base, maximum capped at the upper limit, GDD = (max + min)/2 - base, never below 0",
"source": "computed locally",
"reasons": [
"Each day's GDD = (daily max, capped at the cutoff, + daily min, raised to the base) / 2 - base, and not below zero.",
"Converting: 1 Celsius GDD = 1.8 Fahrenheit GDD."
],
"summary": "4 day(s) add up to 57.5 GDDF with a base of 50 F.",
"verdict": "COMPUTED",
"baseNote": "corn: 50 F base, 86 F cutoff (standard extension convention)",
"baseTemp": 50,
"dayCount": 4,
"degraded": false,
"totalGdd": 57.5,
"upperTemp": 86,
"disclaimer": "Screening signal computed from the named public source. Not financial, legal or investment advice; provided as is. Verify at the source before acting.",
"notChecked": [
"hourly temperature swings: daily min and max understate or overstate heat accumulation on days with unusual curves",
"soil temperature, day length, moisture and plant stress, which also control development",
"…2 more"
],
"averageGddPerDay": 14.375,
"daysTruncatedToLast60": false
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"description": "Growing degree days from daily lows and highs with a base temperature and upper cutoff: daily and cumulative totals.",
"outputSchema": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"crop": "corn",
"days": "48:72; 52:80; 55:88; 40:70",
"unit": "f"
}
},
"output": {
"asOf": "2026-10-11T20:20:03.262Z",
"days": [
{
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"min": 48,
"cumulativeGdd": 11,
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"unit": "f",
"method": "modified (cutoff): minimum raised to the base, maximum capped at the upper limit, GDD = (max + min)/2 - base, never below 0",
"source": "computed locally",
"reasons": [
"Each day's GDD = (daily max, capped at the cutoff, + daily min, raised to the base) / 2 - base, and not below zero.",
"Converting: 1 Celsius GDD = 1.8 Fahrenheit GDD."
],
"summary": "4 day(s) add up to 57.5 GDDF with a base of 50 F.",
"verdict": "COMPUTED",
"baseNote": "corn: 50 F base, 86 F cutoff (standard extension convention)",
"baseTemp": 50,
"dayCount": 4,
"degraded": false,
"totalGdd": 57.5,
"upperTemp": 86,
"disclaimer": "Screening signal computed from the named public source. Not financial, legal or investment advice; provided as is. Verify at the source before acting.",
"notChecked": [
"hourly temperature swings: daily min and max understate or overstate heat accumulation on days with unusual curves",
"soil temperature, day length, moisture and plant stress, which also control development",
"…2 more"
],
"averageGddPerDay": 14.375,
"daysTruncatedToLast60": false
}
},
"maxAmountRequired": "20000",
"maxTimeoutSeconds": 300
},
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"extra": {
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"payTo": "0xb531320805C5BED1D46AEaDcF4F008FDF172DBDa",
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"mimeType": "application/json",
"resource": "https://garden-calc.x402tookit.com/growing-degree-days",
"description": "Growing degree days from daily lows and highs with a base temperature and upper cutoff: daily and cumulative totals.",
"outputSchema": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"crop": "corn",
"days": "48:72; 52:80; 55:88; 40:70",
"unit": "f"
}
},
"output": {
"asOf": "2026-10-11T20:20:03.262Z",
"days": [
{
"day": 1,
"gdd": 11,
"max": 72,
"min": 48,
"cumulativeGdd": 11,
"simpleAverageGdd": 10
},
{
"day": 2,
"gdd": 16,
"max": 80,
"min": 52,
"cumulativeGdd": 27,
"simpleAverageGdd": 16
}
],
"unit": "f",
"method": "modified (cutoff): minimum raised to the base, maximum capped at the upper limit, GDD = (max + min)/2 - base, never below 0",
"source": "computed locally",
"reasons": [
"Each day's GDD = (daily max, capped at the cutoff, + daily min, raised to the base) / 2 - base, and not below zero.",
"Converting: 1 Celsius GDD = 1.8 Fahrenheit GDD."
],
"summary": "4 day(s) add up to 57.5 GDDF with a base of 50 F.",
"verdict": "COMPUTED",
"baseNote": "corn: 50 F base, 86 F cutoff (standard extension convention)",
"baseTemp": 50,
"dayCount": 4,
"degraded": false,
"totalGdd": 57.5,
"upperTemp": 86,
"disclaimer": "Screening signal computed from the named public source. Not financial, legal or investment advice; provided as is. Verify at the source before acting.",
"notChecked": [
"hourly temperature swings: daily min and max understate or overstate heat accumulation on days with unusual curves",
"soil temperature, day length, moisture and plant stress, which also control development",
"…2 more"
],
"averageGddPerDay": 14.375,
"daysTruncatedToLast60": false
}
},
"maxAmountRequired": "20000",
"maxTimeoutSeconds": 300
}
],
"x402Version": 1,
"alsoAvailable": {
"llms": "https://garden-calc.x402tookit.com/llms.txt",
"catalog": "https://garden-calc.x402tookit.com/catalog",
"message": "Garden Calculators has 8 pay-per-call endpoints (Garden math for agents: growing degree days, plant spacing, bed soil, drip irrigation, fertilizer, compost balance, frost risk and planting dates.), from $0.02 a call. See the full menu and send your agents our way.",
"openapi": "https://garden-calc.x402tookit.com/openapi.json",
"related": [
{
"url": "https://garden-calc.x402tookit.com/plant-spacing",
"path": "/plant-spacing",
"what": "Plants that fit a bed at a spacing (grid or offset rows) and seeds to sow from germinatio…",
"price": "$0.02"
},
{
"url": "https://garden-calc.x402tookit.com/planting-dates",
"path": "/planting-dates",
"what": "Planting calendar from your frost date: dates for tasks given as weeks before or after, s…",
"price": "$0.02"
},
{
"url": "https://garden-calc.x402tookit.com/soil-volume",
"path": "/soil-volume",
"what": "Soil or mulch for a rectangular or round bed: cubic feet, yards, litres, bags, settling a…",
"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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{
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"crop": "corn",
"days": "48:72; 52:80; 55:88; 40:70",
"unit": "f"
}
},
"output": {
"type": "json",
"example": {
"asOf": "2026-10-11T20:20:03.262Z",
"days": [
{
"day": 1,
"gdd": 11,
"max": 72,
"min": 48,
"cumulativeGdd": 11,
"simpleAverageGdd": 10
},
{
"day": 2,
"gdd": 16,
"max": 80,
"min": 52,
"cumulativeGdd": 27,
"simpleAverageGdd": 16
}
],
"unit": "f",
"method": "modified (cutoff): minimum raised to the base, maximum capped at the upper limit, GDD = (max + min)/2 - base, never below 0",
"source": "computed locally",
"reasons": [
"Each day's GDD = (daily max, capped at the cutoff, + daily min, raised to the base) / 2 - base, and not below zero.",
"Converting: 1 Celsius GDD = 1.8 Fahrenheit GDD."
],
"summary": "4 day(s) add up to 57.5 GDDF with a base of 50 F.",
"verdict": "COMPUTED",
"baseNote": "corn: 50 F base, 86 F cutoff (standard extension convention)",
"baseTemp": 50,
"dayCount": 4,
"degraded": false,
"totalGdd": 57.5,
"upperTemp": 86,
"disclaimer": "Screening signal computed from the named public source. Not financial, legal or investment advice; provided as is. Verify at the source before acting.",
"notChecked": [
"hourly temperature swings: daily min and max understate or overstate heat accumulation on days with unusual curves",
"soil temperature, day length, moisture and plant stress, which also control development",
"…2 more"
],
"averageGddPerDay": 14.375,
"daysTruncatedToLast60": false
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method"
],
"properties": {
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"type": "object",
"required": [
"days"
],
"properties": {
"crop": {
"type": "string",
"description": "Preset base temperature: corn, warm-season, cool-season or wheat (or give baseTemp)"
},
"days": {
"type": "string",
"description": "Daily minimum:maximum pairs separated by semicolons or new lines, for example '48:72; 52:80; 55:88' (up to 400 days)"
},
"unit": {
"type": "string",
"description": "f (default) or c for the temperatures and results"
},
"baseTemp": {
"type": "number",
"description": "Base temperature in the chosen unit (below it plants make no growth), -10 to 80 F or -23 to 27 C"
},
"targetGdd": {
"type": "number",
"description": "A GDD total to reach, to find the day it is passed"
},
"upperTemp": {
"type": "number",
"description": "Upper cutoff temperature in the chosen unit (default 86 F or 30 C)"
}
}
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"properties": {
"asOf": {
"type": [
"null",
"string"
]
},
"days": {
"type": [
"array",
"null"
],
"items": {
"type": "object",
"properties": {
"day": {
"type": [
"null",
"number"
]
},
"gdd": {
"type": [
"null",
"number"
]
},
"max": {
"type": [
"null",
"number"
]
},
"min": {
"type": [
"null",
"number"
]
},
"cumulativeGdd": {
"type": [
"null",
"number"
]
},
"simpleAverageGdd": {
"type": [
"null",
"number"
]
}
}
}
},
"unit": {
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"null",
"string"
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},
"method": {
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"string"
]
},
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]
},
"reasons": {
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],
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}
},
"summary": {
"type": [
"null",
"string"
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},
"verdict": {
"type": [
"null",
"string"
]
},
"baseNote": {
"type": [
"null",
"string"
]
},
"baseTemp": {
"type": [
"null",
"number"
]
},
"dayCount": {
"type": [
"null",
"number"
]
},
"degraded": {
"type": [
"boolean",
"null"
]
},
"totalGdd": {
"type": [
"null",
"number"
]
},
"upperTemp": {
"type": [
"null",
"number"
]
},
"disclaimer": {
"type": [
"null",
"string"
]
},
"notChecked": {
"type": [
"array",
"null"
],
"items": {
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},
"averageGddPerDay": {
"type": [
"null",
"number"
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"daysTruncatedToLast60": {
"type": [
"boolean",
"null"
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}
}
}
}Provenance
- Seen in the source catalog
- 2026-10-20 20:28Z
- Last indexed by Roundhouse
- 2026-10-22 19:30Z
- Last enriched (probe, favicon, geo)
- 2026-10-20 21:15Z
- 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 Garden 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=Garden%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://garden-calc.x402tookit.com/growing-degree-days, 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.