saylorinnovations.com
No description published for this endpoint.
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.
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 to access this resource.",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"memo": "saylor:datadesk:rental-property-",
"name": "USD Coin",
"note": "Base settles through an x402 facilitator. Send payload.signature and payload.authorization (EIP-3009); there is no self-submitted path on this network.",
"version": "2",
"facilitatorOnly": true,
"assetTransferMethod": "eip3009"
},
"payTo": "0xA2A8dF0f7CaaBEa4e120a2568118f141569fc8aa",
"amount": "10000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 120
},
{
"asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
"extra": {
"memo": "saylor:datadesk:rental-property-",
"name": "USD Coin",
"note": "Polygon settles through an x402 facilitator. Send payload.signature and payload.authorization (EIP-3009); there is no self-submitted path on this network.",
"version": "2",
"facilitatorOnly": true,
"assetTransferMethod": "eip3009"
},
"payTo": "0xA2A8dF0f7CaaBEa4e120a2568118f141569fc8aa",
"amount": "10000",
"scheme": "exact",
"network": "eip155:137",
"maxTimeoutSeconds": 120
},
{
"asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
"extra": {
"memo": "saylor:datadesk:rental-property-",
"name": "USD Coin",
"note": "Arbitrum settles through an x402 facilitator. Send payload.signature and payload.authorization (EIP-3009); there is no self-submitted path on this network.",
"version": "2",
"facilitatorOnly": true,
"assetTransferMethod": "eip3009"
},
"payTo": "0xA2A8dF0f7CaaBEa4e120a2568118f141569fc8aa",
"amount": "10000",
"scheme": "exact",
"network": "eip155:42161",
"maxTimeoutSeconds": 120
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"memo": "saylor:datadesk:rental-property-",
"session": "eyJhcnRpY2xlSWQiOiJkYXRhZGVzazpyZW50YWwtcHJvcGVydHktYW5hbHlzaXMiLCJyZWZlcmVuY2UiOiJEU2JjMllCb0dpSmt5dDgyOGd1QlF0NkoxVXVUQ1hOZTJERVJaRkF2aThmYSIsInJlY2lwaWVudCI6IjdMU2pmckpmOGZOc0I4VkE5dTdOM1dFbjI1c21RTHBvYjNTdnlVdlhhY3k3IiwibWludCI6IkVQakZXZGQ1QXVmcVNTcWVNMnFOMXh6eWJhcEM4RzR3RUdHa1p3eVREdDF2IiwibWluQW1vdW50IjoxMDAwMCwiZXhwIjoxNzkyODA4Mjk4NzMzfQ.ty5X6LvqZ1HKytIR4nIyCe-VR-vW6nRaveYUAZeTl1c",
"feePayer": "D6ZhtNQ5nT9ZnTHUbqXZsTx5MH2rPFiBBggX4hY1WePM",
"reference": "DSbc2YBoGiJkyt828guBQt6J1UuTCXNe2DERZFAvi8fa"
},
"payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
"amount": "10000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 120
},
{
"asset": "Es9vMFrzaCERmJfrF4H2FYD4KCoNkY11McCe8BenwNYB",
"extra": {
"memo": "saylor:datadesk:rental-property-",
"session": "eyJhcnRpY2xlSWQiOiJkYXRhZGVzazpyZW50YWwtcHJvcGVydHktYW5hbHlzaXMiLCJyZWZlcmVuY2UiOiJnWlBqRDVCWkNFUHN1ODZuWUpBNmRpb1FKV2UzeWhXYmFkR3Jlak5Ld0xaIiwicmVjaXBpZW50IjoiN0xTamZySmY4Zk5zQjhWQTl1N04zV0VuMjVzbVFMcG9iM1N2eVV2WGFjeTciLCJtaW50IjoiRXM5dk1GcnphQ0VSbUpmckY0SDJGWUQ0S0NvTmtZMTFNY0NlOEJlbndOWUIiLCJtaW5BbW91bnQiOjEwMDAwLCJleHAiOjE3OTI4MDgyOTg3MzR9.wr0NvORUhcFExUhRt1Zhbm00LsyVrPYQBc0zIAZidGw",
"feePayer": "D6ZhtNQ5nT9ZnTHUbqXZsTx5MH2rPFiBBggX4hY1WePM",
"reference": "gZPjD5BZCEPsu86nYJA6dioQJWe3yhWbadGrejNKwLZ"
},
"payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
"amount": "10000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 120
},
{
"asset": "So11111111111111111111111111111111111111112",
"extra": {
"memo": "saylor:datadesk:rental-property-",
"note": "Native SOL: send lamports with a system transfer, not an SPL transfer. Price is quoted live and this quote expires in 120s.",
"native": true,
"session": "eyJhcnRpY2xlSWQiOiJkYXRhZGVzazpyZW50YWwtcHJvcGVydHktYW5hbHlzaXMiLCJyZWZlcmVuY2UiOiJCWVB3TW5SaG1vTkJNQTV1eHo1a1pzc3FSWjRFU1pKYTM0ZGpxanB5aVhEeiIsInJlY2lwaWVudCI6IjdMU2pmckpmOGZOc0I4VkE5dTdOM1dFbjI1c21RTHBvYjNTdnlVdlhhY3k3IiwibWludCI6bnVsbCwibWluQW1vdW50Ijo5NDYyNCwiZXhwIjoxNzkyODA4Mjk4NzM0fQ.-X_MphrD9QVc2Z5CSqmVjWvY0cZjs1vEl3nx6lo_Xk4",
"reference": "BYPwMnRhmoNBMA5uxz5kZssqRZ4ESZJa34djqjpyiXDz",
"solUsdPrice": 102.51,
"quotedLamports": "97551"
},
"payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
"amount": "94624",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 120
}
],
"resource": {
"url": "https://saylorinnovations.com/api/realestate/rental-analysis?price=300000&down_payment_percent=20&interest_rate_percent=6.75&monthly_rent=2400&property_tax_percent=1.2&insurance_annual=1400",
"tags": [
"rental property calculator",
"cash on cash return",
"cap rate and cash flow",
"dscr for a rental",
"does this rental cash flow"
],
"iconUrl": "https://saylorinnovations.com/og-image.jpg",
"mimeType": "application/json",
"description": "Rental property underwriting: NOI, cap rate, monthly cash flow, cash-on-cash return, DSCR, gross rent multiplier and break-even occupancy from price and rent.",
"serviceName": "Saylor Innovations Data Desk"
},
"extensions": {
"tags": [
"rental property calculator",
"cash on cash return",
"cap rate and cash flow",
"dscr for a rental",
"does this rental cash flow",
"break even occupancy"
],
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"price": "300000",
"monthly_rent": "2400",
"insurance_annual": "1400",
"down_payment_percent": "20",
"property_tax_percent": "1.2",
"interest_rate_percent": "6.75"
}
},
"output": {
"type": "json",
"example": {
"dscr": 1.08,
"note": "Insurance defaults to 0.5% of price when not given. Excludes appreciation, principal paydown, taxes on income and capital expenditures beyond the maintenance share.",
"price": 300000,
"source": "Standard rental property underwriting formulas",
"verdict": "cash flow positive but thin coverage",
"loan_amount": 240000,
"cash_invested": 69000,
"annual_cash_flow": 1491.57,
"cap_rate_percent": 6.724,
"gross_annual_rent": 28800,
"monthly_cash_flow": 124.3,
"annual_debt_service": 18679.63,
"net_operating_income": 20171.2,
"one_percent_rule_met": false,
"expense_ratio_percent": 26.27,
"gross_rent_multiplier": 10.42,
"effective_gross_income": 27360,
"monthly_mortgage_payment": 1556.64,
"annual_operating_expenses": 7188.8,
"breakeven_occupancy_percent": 89.82,
"cash_on_cash_return_percent": 2.162
}
}
},
"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": [
"price",
"down_payment_percent",
"interest_rate_percent",
"monthly_rent"
],
"properties": {
"price": {
"type": "string",
"description": "purchase price"
},
"monthly_rent": {
"type": "string",
"description": "expected monthly rent"
},
"insurance_annual": {
"type": "string",
"description": "optional yearly insurance, default 0.5% of price"
},
"down_payment_percent": {
"type": "string",
"description": "down payment in percent"
},
"property_tax_percent": {
"type": "string",
"description": "optional yearly tax as percent of price, default 1.1"
},
"interest_rate_percent": {
"type": "string",
"description": "mortgage rate in percent"
}
}
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string",
"const": "json"
},
"example": {
"type": "object",
"required": [
"cap_rate_percent",
"monthly_cash_flow"
],
"properties": {
"dscr": {
"type": [
"number",
"null"
],
"description": "NOI divided by debt service; lenders usually want 1.25 or more"
},
"note": {
"type": "string",
"description": "Plain-language caveat about how to read and use the result"
},
"price": {
"type": "number",
"description": "Purchase price used"
},
"source": {
"type": "string",
"description": "Where the data or formula comes from"
},
"verdict": {
"type": "string",
"description": "Plain-language summary of cash flow and coverage"
},
"loan_amount": {
"type": "number",
"description": "Mortgage principal after the down payment"
},
"cash_invested": {
"type": "number",
"description": "Down payment plus closing costs and rehab"
},
"annual_cash_flow": {
"type": "number",
"description": "NOI minus debt service"
},
"cap_rate_percent": {
"type": "number",
"description": "NOI divided by price, in percent"
},
"gross_annual_rent": {
"type": "number",
"description": "Rent at full occupancy for a year"
},
"monthly_cash_flow": {
"type": "number",
"description": "Annual cash flow divided by twelve"
},
"annual_debt_service": {
"type": "number",
"description": "Twelve mortgage payments"
},
"net_operating_income": {
"type": "number",
"description": "Income minus operating expenses, before debt service"
},
"one_percent_rule_met": {
"type": "boolean",
"description": "True when monthly rent is at least 1% of the price"
},
"expense_ratio_percent": {
"type": "number",
"description": "Operating expenses as a percent of effective income"
},
"gross_rent_multiplier": {
"type": [
"number",
"null"
],
"description": "Price divided by gross annual rent"
},
"effective_gross_income": {
"type": "number",
"description": "Annual rent after vacancy"
},
"monthly_mortgage_payment": {
"type": "number",
"description": "Principal and interest payment"
},
"annual_operating_expenses": {
"type": "number",
"description": "Tax, insurance, maintenance, management and HOA for a year"
},
"breakeven_occupancy_percent": {
"type": [
"number",
"null"
],
"description": "Occupancy needed to cover expenses and debt service"
},
"cash_on_cash_return_percent": {
"type": [
"number",
"null"
],
"description": "Annual cash flow divided by cash invested, in percent"
}
}
}
}
}
}
}
},
"method": "GET",
"example": {
"dscr": 1.08,
"note": "Insurance defaults to 0.5% of price when not given. Excludes appreciation, principal paydown, taxes on income and capital expenditures beyond the maintenance share.",
"price": 300000,
"source": "Standard rental property underwriting formulas",
"verdict": "cash flow positive but thin coverage",
"loan_amount": 240000,
"cash_invested": 69000,
"annual_cash_flow": 1491.57,
"cap_rate_percent": 6.724,
"gross_annual_rent": 28800,
"monthly_cash_flow": 124.3,
"annual_debt_service": 18679.63,
"net_operating_income": 20171.2,
"one_percent_rule_met": false,
"expense_ratio_percent": 26.27,
"gross_rent_multiplier": 10.42,
"effective_gross_income": 27360,
"monthly_mortgage_payment": 1556.64,
"annual_operating_expenses": 7188.8,
"breakeven_occupancy_percent": 89.82,
"cash_on_cash_return_percent": 2.162
},
"license": "LicenseRef-Saylor-Agent-Use-1.0",
"mimeType": "application/json",
"freshness": "fetched live (cached up to 1 hour for large reference files)",
"tokenCount": null,
"inputSchema": {
"price": "purchase price",
"loan_years": "optional, default 30",
"rehab_cost": "optional upfront repairs",
"hoa_monthly": "optional",
"monthly_rent": "expected monthly rent",
"vacancy_percent": "optional, default 5",
"insurance_annual": "optional yearly insurance, default 0.5% of price",
"management_percent": "optional, default 0",
"down_payment_percent": "down payment in percent",
"property_tax_percent": "optional yearly tax as percent of price, default 1.1",
"closing_costs_percent": "optional, default 3",
"interest_rate_percent": "mortgage rate in percent",
"maintenance_percent_of_rent": "optional, default 8"
},
"serviceName": "Saylor Innovations Data Desk",
"instructions": "STANDARD PATH (works with stock x402 clients): send payload.transaction — a base64 partially-signed Solana transaction — and we route verify/settle through an x402 facilitator that sponsors the fee and submits it. Include the chosen accepts entry as \"accepted\" so we can match terms. ALTERNATIVE PATH (no facilitator): Pick ONE entry from accepts and use the reference and session from THAT entry — each asset has its own. USDC or USDT: send an SPL transfer of the exact amount. Native SOL (asset=So11111111111111111111111111111111111111112, extra.native=true): send that many lamports with a system transfer. Either way include extra.reference as a read-only account (Solana Pay style), then retry with PAYMENT-SIGNATURE: base64({x402Version:2, payload:{session, reference}}). If your client cannot attach a reference, send payload.signature instead (USDC only). SOL amounts are quoted live and expire in 120s; stablecoins do not move. The facilitator path verifies and settles in this request. Only the alternative self-submitted Solana path needs retries while the transfer is indexed (typically 3-4 attempts over 10-20s). On that path, a 402 saying \"payment not found on-chain yet\" means keep retrying.",
"outputSchema": {
"type": "object",
"required": [
"cap_rate_percent",
"monthly_cash_flow"
],
"properties": {
"dscr": {
"type": [
"number",
"null"
],
"description": "NOI divided by debt service; lenders usually want 1.25 or more"
},
"note": {
"type": "string",
"description": "Plain-language caveat about how to read and use the result"
},
"price": {
"type": "number",
"description": "Purchase price used"
},
"source": {
"type": "string",
"description": "Where the data or formula comes from"
},
"verdict": {
"type": "string",
"description": "Plain-language summary of cash flow and coverage"
},
"loan_amount": {
"type": "number",
"description": "Mortgage principal after the down payment"
},
"cash_invested": {
"type": "number",
"description": "Down payment plus closing costs and rehab"
},
"annual_cash_flow": {
"type": "number",
"description": "NOI minus debt service"
},
"cap_rate_percent": {
"type": "number",
"description": "NOI divided by price, in percent"
},
"gross_annual_rent": {
"type": "number",
"description": "Rent at full occupancy for a year"
},
"monthly_cash_flow": {
"type": "number",
"description": "Annual cash flow divided by twelve"
},
"annual_debt_service": {
"type": "number",
"description": "Twelve mortgage payments"
},
"net_operating_income": {
"type": "number",
"description": "Income minus operating expenses, before debt service"
},
"one_percent_rule_met": {
"type": "boolean",
"description": "True when monthly rent is at least 1% of the price"
},
"expense_ratio_percent": {
"type": "number",
"description": "Operating expenses as a percent of effective income"
},
"gross_rent_multiplier": {
"type": [
"number",
"null"
],
"description": "Price divided by gross annual rent"
},
"effective_gross_income": {
"type": "number",
"description": "Annual rent after vacancy"
},
"monthly_mortgage_payment": {
"type": "number",
"description": "Principal and interest payment"
},
"annual_operating_expenses": {
"type": "number",
"description": "Tax, insurance, maintenance, management and HOA for a year"
},
"breakeven_occupancy_percent": {
"type": [
"number",
"null"
],
"description": "Occupancy needed to cover expenses and debt service"
},
"cash_on_cash_return_percent": {
"type": [
"number",
"null"
],
"description": "Annual cash flow divided by cash invested, in percent"
}
}
},
"noPathTemplate": true,
"settlementModes": [
"facilitator-transaction",
"self-submitted-reference"
],
"typicalLatencyMs": 700
},
"x402Version": 2
}Accepts
The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.
Pay 0.01 USDC on Base to 0xA2A8…fc8aa. The signed payment is good for 2 minutes.
- Paid to
- 0xA2A8…fc8aa
- USD Coin contract
- 0x8335…02913
- Payment window
- 2 minutes
- As published
- 10000 smallest units
- Returns
- application/json
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
- 0xA2A8…fc8aa
- Token contract
- 0x3c49…c3359
- Payment window
- 2 minutes
- Returns
- application/json
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
- 0xA2A8…fc8aa
- Token contract
- 0xaf88…e5831
- Payment window
- 2 minutes
- Returns
- application/json
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
- 7LSjfr…Xacy7
- Token contract
- EPjFWd…TDt1v
- Payment window
- 2 minutes
- Returns
- application/json
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
- 7LSjfr…Xacy7
- Token contract
- Es9vMF…nwNYB
- Payment window
- 2 minutes
- Returns
- application/json
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
- 7LSjfr…Xacy7
- Token contract
- So1111…11112
- Payment window
- 2 minutes
- Returns
- application/json
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"payTo": "0xA2A8dF0f7CaaBEa4e120a2568118f141569fc8aa",
"scheme": "exact",
"network": "eip155:8453",
"mimeType": "application/json",
"resource": "https://saylorinnovations.com/api/realestate/rental-analysis",
"description": "",
"maxAmountRequired": "10000",
"maxTimeoutSeconds": 120
},
{
"asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
"payTo": "0xA2A8dF0f7CaaBEa4e120a2568118f141569fc8aa",
"scheme": "exact",
"network": "eip155:137",
"mimeType": "application/json",
"resource": "https://saylorinnovations.com/api/realestate/rental-analysis",
"description": "",
"maxAmountRequired": "10000",
"maxTimeoutSeconds": 120
},
{
"asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
"payTo": "0xA2A8dF0f7CaaBEa4e120a2568118f141569fc8aa",
"scheme": "exact",
"network": "eip155:42161",
"mimeType": "application/json",
"resource": "https://saylorinnovations.com/api/realestate/rental-analysis",
"description": "",
"maxAmountRequired": "10000",
"maxTimeoutSeconds": 120
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"mimeType": "application/json",
"resource": "https://saylorinnovations.com/api/realestate/rental-analysis",
"description": "",
"maxAmountRequired": "10000",
"maxTimeoutSeconds": 120
},
{
"asset": "Es9vMFrzaCERmJfrF4H2FYD4KCoNkY11McCe8BenwNYB",
"payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"mimeType": "application/json",
"resource": "https://saylorinnovations.com/api/realestate/rental-analysis",
"description": "",
"maxAmountRequired": "10000",
"maxTimeoutSeconds": 120
},
{
"asset": "So11111111111111111111111111111111111111112",
"payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"mimeType": "application/json",
"resource": "https://saylorinnovations.com/api/realestate/rental-analysis",
"description": "",
"maxAmountRequired": "90434",
"maxTimeoutSeconds": 120
}
]Provenance
- Seen in the source catalog
- 2026-10-20 14:50Z
- Last indexed by Roundhouse
- 2026-10-24 01:45Z
- Last enriched (probe, favicon, geo)
- 2026-10-24 02:16Z
- x402 version
- 1
- Max timeout
- 120s
- 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. 8 snapshots so far. Verified volume counts only settlements with an on-chain EIP-3009 marker.
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Using Roundhouse, look up the x402 service saylorinnovations.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=saylorinnovations.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://saylorinnovations.com/api/realestate/rental-analysis, 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.