Saylor Innovations Data Desk
Capital gain from a crypto sale by lot using FIFO, LIFO or HIFO, with cost basis, proceeds and the short-term and long-term split per lot.
DataUnknowneip155:8453Exactvia facilitator:payAI
Crypto capital gains calculatorFifo vs hifo cost basisShort vs long term crypto gainWhich lots are sold firstCost basis for a partial sale
Calls · 30d
1
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 9 snapshots so far.
$15.76
Verified settled volume
1,657 settlements proven x402 by their on-chain EIP-3009 marker.
$0.010
Listed price
As published in the catalog. Always read the live 402 before paying.
—
Calls · 30d
Upstream's own call count for this endpoint, not ours.
—
Unique payers · 30d
Never called
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0xA2A8dF0f7CaaBEa4e120a2568118f141569fc8aaThe 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.
Accepts
The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.
0.01USDC≈ $0.01 USD
on Base · exact scheme
Pay 0.01 USDC on Base to 0xA2A8…fc8aa. The signed payment is good for 2 minutes.
- Paid to
- 0xA2A8…fc8aa
- USD Coin contract
- 0x8335…02913
- Payment window
- 2 minutes
- As published
- 10000 smallest units
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"memo": "saylor:datadesk:crypto-capital-g",
"name": "USD Coin",
"version": "2",
"facilitatorOnly": true,
"assetTransferMethod": "eip3009"
},
"payTo": "0xA2A8dF0f7CaaBEa4e120a2568118f141569fc8aa",
"amount": "10000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 120
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"lots": "[{\"date\":\"2024-01-10\",\"qty\":1,\"price\":42000},{\"date\":\"2025-03-05\",\"qty\":1,\"price\":85000}]",
"method": "hifo",
"sell_qty": "1.5",
"sell_date": "2025-10-17",
"sell_price": "95000"
}
},
"output": {
"type": "json",
"example": {
"note": "Educational lot matching only, not tax advice. Rules differ by country and by tax year, and some jurisdictions require average cost or specific identification.",
"method": "hifo",
"source": "FIFO, LIFO and highest-cost-first lot matching on the supplied purchases",
"proceeds": 142500,
"lots_used": [
{
"lot": 2,
"gain": 10000,
"term": "short",
"bought": "2025-03-05",
"proceeds": 95000,
"quantity": 1,
"cost_basis": 85000,
"holding_days": 226
},
{
"lot": 1,
"gain": 26500,
"term": "long",
"bought": "2024-01-10",
"proceeds": 47500,
"quantity": 0.5,
"cost_basis": 21000,
"holding_days": 646
}
],
"sell_date": "2025-10-17",
"cost_basis": 106000,
"sell_price": 95000,
"total_gain": 36500,
"sell_quantity": 1.5,
"long_term_gain": 26500,
"short_term_gain": 10000,
"average_cost_per_unit": 70666.66666667,
"long_term_threshold_days": 365
}
}
},
"schema": {
"type": "object",
"$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": [
"lots",
"sell_date",
"sell_price",
"sell_qty"
],
"properties": {
"lots": {
"type": "string",
"description": "JSON array of purchases: [{\"date\":\"YYYY-MM-DD\",\"qty\":1,\"price\":40000,\"fee\":0}]"
},
"method": {
"type": "string",
"description": "optional fifo, lifo or hifo, default fifo"
},
"sell_qty": {
"type": "string",
"description": "quantity sold"
},
"sell_date": {
"type": "string",
"description": "sale date YYYY-MM-DD"
},
"sell_price": {
"type": "string",
"description": "sale price per unit"
}
}
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string",
"const": "json"
},
"example": {
"type": "object",
"required": [
"total_gain",
"lots_used"
],
"properties": {
"note": {
"type": "string",
"description": "Plain-language caveat about how to read and use the result"
},
"method": {
"type": "string",
"description": "Lot matching method used"
},
"source": {
"type": "string",
"description": "Where the data or formula comes from"
},
"proceeds": {
"type": "number",
"description": "Sale proceeds after the selling fee"
},
"lots_used": {
"type": "array",
"items": {
"type": "object",
"properties": {
"lot": {
"type": [
"number",
"null"
],
"description": "Position of the lot in the supplied list"
},
"gain": {
"type": [
"number",
"null"
],
"description": "Gain or loss on it"
},
"term": {
"type": [
"string",
"null"
],
"description": "short or long"
},
"bought": {
"type": [
"string",
"null"
],
"description": "Purchase date"
},
"proceeds": {
"type": [
"number",
"null"
],
"description": "Sale proceeds attributed to it"
},
"quantity": {
"type": [
"number",
"null"
],
"description": "Quantity taken from the lot"
},
"cost_basis": {
"type": [
"number",
"null"
],
"description": "Cost of that quantity including fees"
},
"holding_days": {
"type": [
"number",
"null"
],
"description": "Days held"
}
}
},
"description": "The purchase lots matched to the sale"
},
"sell_date": {
"type": "string",
"description": "Sale date"
},
"cost_basis": {
"type": "number",
"description": "Cost of the matched lots including fees"
},
"sell_price": {
"type": "number",
"description": "Sale price per unit"
},
"total_gain": {
"type": "number",
"description": "Proceeds minus cost basis"
},
"sell_quantity": {
"type": "number",
"description": "Quantity sold"
},
"long_term_gain": {
"type": "number",
"description": "Gain on lots held longer than the threshold"
},
"short_term_gain": {
"type": "number",
"description": "Gain on lots held no longer than the threshold"
},
"average_cost_per_unit": {
"type": "number",
"description": "Cost basis divided by quantity sold"
},
"long_term_threshold_days": {
"type": "number",
"description": "Days after which a gain counts as long-term"
}
}
}
}
}
}
}
}
}Provenance
- Seen in the source catalog
- 2026-10-26 02:59Z
- Last indexed by Roundhouse
- 2026-10-26 20:15Z
- Last enriched (probe, favicon, geo)
- —
- x402 version
- 2
- Max timeout
- 120s
- Liveness probe
- Not probed
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. 9 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 Saylor Innovations Data Desk 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=Saylor%20Innovations%20Data%20Desk' 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/tax/crypto-gains, 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.