Garden Calculators
Fertilizer product needed for a nutrient target per 1000 sq ft from its N-P-K analysis, with the P and K delivered and bags.
OtherLiveeip155:8453Exactvia cdp
GardenFertilizerNpkLawnCalculator
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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"nutrient": "n",
"targetLbPer1000SqFt": 1
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"output": {
"asOf": "2026-10-11T20:20:02.734Z",
"source": "computed locally",
"reasons": [
"Product = target nutrient / (analysis % / 100). The analysis lists N, P2O5 and K2O (oxides), not elemental P and K.",
"Elemental P = P2O5 x 0.4364; elemental K = K2O x 0.8301."
],
"summary": "To apply 1 lb of nitrogen per 1000 sq ft with 10-10-10, spread 10 lb of product per 1000 sq ft: 25 lb (0.5 bags of 50 lb) over 2500 sq ft. That delivers 1 lb N, 1 lb P2O5 and 1 lb K2O per 1000 sq ft.",
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],
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"analysis": "10-10-10",
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"nutrient": "nitrogen",
"bagsNeeded": 1,
"disclaimer": "Screening signal computed from the named public source. Not financial, legal or investment advice; provided as is. Verify at the source before acting.",
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"your soil's actual needs: only a soil test shows what to add (phosphorus and potassium are often not needed on established lawns and gardens)",
"slow-release versus quick-release products and the maximum safe single application on the label (fast nitrogen over about 1 pound N per 1000 sq ft can burn turf)",
"…2 more"
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"description": "Fertilizer product needed for a nutrient target per 1000 sq ft from its N-P-K analysis, with the P and K delivered and bags.",
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"input": {
"type": "http",
"method": "GET",
"queryParams": {
"bagLb": 50,
"analysis": "10-10-10",
"areaSqFt": 2500,
"nutrient": "n",
"targetLbPer1000SqFt": 1
}
},
"output": {
"asOf": "2026-10-11T20:20:02.734Z",
"source": "computed locally",
"reasons": [
"Product = target nutrient / (analysis % / 100). The analysis lists N, P2O5 and K2O (oxides), not elemental P and K.",
"Elemental P = P2O5 x 0.4364; elemental K = K2O x 0.8301."
],
"summary": "To apply 1 lb of nitrogen per 1000 sq ft with 10-10-10, spread 10 lb of product per 1000 sq ft: 25 lb (0.5 bags of 50 lb) over 2500 sq ft. That delivers 1 lb N, 1 lb P2O5 and 1 lb K2O per 1000 sq ft.",
"verdict": "COMPUTED",
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"degraded": false,
"nutrient": "nitrogen",
"bagsNeeded": 1,
"disclaimer": "Screening signal computed from the named public source. Not financial, legal or investment advice; provided as is. Verify at the source before acting.",
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"your soil's actual needs: only a soil test shows what to add (phosphorus and potassium are often not needed on established lawns and gardens)",
"slow-release versus quick-release products and the maximum safe single application on the label (fast nitrogen over about 1 pound N per 1000 sq ft can burn turf)",
"…2 more"
],
"totalDelivered": {
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"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/frost-risk",
"path": "/frost-risk",
"what": "Frost or freeze class of a forecast low against plant hardiness, plus where a date sits a…",
"price": "$0.02"
},
{
"url": "https://garden-calc.x402tookit.com/growing-degree-days",
"path": "/growing-degree-days",
"what": "Growing degree days from daily lows and highs with a base temperature and upper cutoff: d…",
"price": "$0.02"
},
{
"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"
}
]
}
}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": {
"bagLb": 50,
"analysis": "10-10-10",
"areaSqFt": 2500,
"nutrient": "n",
"targetLbPer1000SqFt": 1
}
},
"output": {
"type": "json",
"example": {
"asOf": "2026-10-11T20:20:02.734Z",
"source": "computed locally",
"reasons": [
"Product = target nutrient / (analysis % / 100). The analysis lists N, P2O5 and K2O (oxides), not elemental P and K.",
"Elemental P = P2O5 x 0.4364; elemental K = K2O x 0.8301."
],
"summary": "To apply 1 lb of nitrogen per 1000 sq ft with 10-10-10, spread 10 lb of product per 1000 sq ft: 25 lb (0.5 bags of 50 lb) over 2500 sq ft. That delivers 1 lb N, 1 lb P2O5 and 1 lb K2O per 1000 sq ft.",
"verdict": "COMPUTED",
"analysis": "10-10-10",
"areaSqFt": 2500,
"degraded": false,
"nutrient": "nitrogen",
"bagsNeeded": 1,
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"your soil's actual needs: only a soil test shows what to add (phosphorus and potassium are often not needed on established lawns and gardens)",
"slow-release versus quick-release products and the maximum safe single application on the label (fast nitrogen over about 1 pound N per 1000 sq ft can burn turf)",
"…2 more"
],
"totalDelivered": {
"nLb": 2.5,
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},
"totalProductKg": 11.34,
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"targetKgPerHectare": 48.8,
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"productOzPer100SqFt": 16,
"targetLbPer1000SqFt": 1,
"deliveredPer1000SqFt": {
"nLb": 1,
"k2oLb": 1,
"p2o5Lb": 1,
"elementalKLb": 0.83,
"elementalPLb": 0.436
},
"productLbPer1000SqFt": 10
}
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},
"schema": {
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"properties": {
"bagLb": {
"type": "number",
"description": "Bag size in pounds, to count bags (default 50)"
},
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"type": "string",
"description": "Fertilizer N-P-K analysis on the bag, for example 10-10-10 or 46-0-0 (percent N, P2O5, K2O)"
},
"areaSqFt": {
"type": "number",
"description": "Area to fertilize in square feet, 1 to 10,000,000"
},
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"type": "string",
"description": "Target nutrient: n (default), p2o5 or k2o"
},
"targetLbPer1000SqFt": {
"type": "number",
"description": "Pounds of the target nutrient wanted per 1000 sq ft, 0.05 to 10 (lawns often use 0.5 to 1 pound of N per application)"
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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/fertilizer-rate, 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.