Date calculator | Vextorium
Date facts (weekday, ISO week, quarter, day of year, leap year), exact difference between two dates in years, months, days, weeks and Mon-Fri working days, and adding or subtracting days, months or years (end-of-month safe).
SearchLiveeip155:8453Exactvia cdp
DateCalendarIso-weekDurationScheduling
Calls · 30d
5↑ 42%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 29 snapshots so far.
$13.51
Verified settled volume
3,580 settlements proven x402 by their on-chain EIP-3009 marker.
$0.0030
Listed price
As published in the catalog. Always read the live 402 before paying.
5
Calls · 30d
Upstream's own call count for this endpoint, not ours.
4
Unique payers · 30d
Last called 2026-10-20 17:52Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0xb9f06D2734B7E9D7b21B64C4D8b95bd774b71aCfThe 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.
0.003USDC≈ $0.003 USD
on Base · exact scheme
Pay 0.003 USDC on Base to 0xb9f0…71aCf. The signed payment is good for 5 minutes.
- Paid to
- 0xb9f0…71aCf
- USD Coin contract
- 0x8335…02913
- Payment window
- 5 minutes
- As published
- 3000 smallest units
3000units
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
- HcjfmZ…t3pz2
- Token contract
- EPjFWd…TDt1v
- Payment window
- 5 minutes
3000units
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
- 0xb9f0…71aCf
- Token contract
- 0x3c49…c3359
- Payment window
- 5 minutes
3000units
on Optimism · 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
- 0xb9f0…71aCf
- Token contract
- 0x0b2C…7Ff85
- Payment window
- 168 hours
3000units
on eip155:5042 · 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
- 0xb9f0…71aCf
- Token contract
- 0x3600…00000
- Payment window
- 168 hours
0.003units
on xrpl:0 · 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
- rEac5r…2pNCp
- Token contract
- 524C55…00000
- Payment window
- 5 minutes
2310units
on xrpl:0 · 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
- rEac5r…2pNCp
- Token contract
- XRP
- Payment window
- 5 minutes
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xb9f06D2734B7E9D7b21B64C4D8b95bd774b71aCf",
"amount": "3000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "GVJJ7rdGiXr5xaYbRwRbjfaJL7fmwRygFi1H6aGqDveb"
},
"payTo": "HcjfmZLgWRZzwj4deEiS7pewc4KBYSw39mW5nTyt3pz2",
"amount": "3000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 300
},
{
"asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xb9f06D2734B7E9D7b21B64C4D8b95bd774b71aCf",
"amount": "3000",
"scheme": "exact",
"network": "eip155:137",
"maxTimeoutSeconds": 300
},
{
"asset": "0x0b2C639c533813f4Aa9D7837CAf62653d097Ff85",
"extra": {
"name": "GatewayWalletBatched",
"assets": [
{
"symbol": "USDC",
"address": "0x0b2c639c533813f4aa9d7837caf62653d097ff85",
"decimals": 6,
"authorizationVersions": [
"1",
"2"
]
}
],
"version": "1",
"verifyingContract": "0x77777777dcc4d5a8b6e418fd04d8997ef11000ee",
"minValiditySeconds": 604800
},
"payTo": "0xb9f06D2734B7E9D7b21B64C4D8b95bd774b71aCf",
"amount": "3000",
"scheme": "exact",
"network": "eip155:10",
"maxTimeoutSeconds": 604900
},
{
"asset": "0x3600000000000000000000000000000000000000",
"extra": {
"name": "GatewayWalletBatched",
"assets": [
{
"symbol": "USDC",
"address": "0x3600000000000000000000000000000000000000",
"decimals": 6,
"authorizationVersions": [
"1",
"2"
]
}
],
"version": "1",
"verifyingContract": "0x77777777dcc4d5a8b6e418fd04d8997ef11000ee",
"minValiditySeconds": 604800
},
"payTo": "0xb9f06D2734B7E9D7b21B64C4D8b95bd774b71aCf",
"amount": "3000",
"scheme": "exact",
"network": "eip155:5042",
"maxTimeoutSeconds": 604900
},
{
"asset": "524C555344000000000000000000000000000000",
"extra": {
"issuer": "rMxCKbEDwqr76QuheSUMdEGf4B9xJ8m5De",
"invoiceId": "81A15D25ED164CE8BD9C2B1881D4F701",
"sourceTag": 804681468,
"areFeesSponsored": false
},
"payTo": "rEac5rTEr7y81iEyrMTrHCRbnktSE2pNCp",
"amount": "0.003",
"scheme": "exact",
"network": "xrpl:0",
"maxTimeoutSeconds": 300
},
{
"asset": "XRP",
"extra": {
"invoiceId": "41FACE821EC349E68A316CF9686D8D69",
"sourceTag": 804681468,
"areFeesSponsored": false
},
"payTo": "rEac5rTEr7y81iEyrMTrHCRbnktSE2pNCp",
"amount": "2310",
"scheme": "exact",
"network": "xrpl:0",
"maxTimeoutSeconds": 300
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"body": {
"date": "2024-02-29",
"until": "2026-10-02",
"add_months": 12
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"date": {
"date": "2024-02-29",
"leap": true,
"quarter": 1,
"weekday": "Thursday",
"weekend": false,
"week_iso": 9,
"year_iso": 2024,
"day_of_year": 60,
"days_in_month": 29
},
"result": {
"date": "2025-02-28",
"leap": false,
"quarter": 1,
"weekday": "Friday",
"weekend": false,
"week_iso": 9,
"year_iso": 2025,
"day_of_year": 59,
"days_in_month": 28
},
"difference": {
"days": 4,
"until": "2026-10-02",
"weeks": 135.14,
"years": 2,
"months": 7,
"total_days": 946,
"weekdays_mon_fri": 676
}
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method",
"bodyType",
"body"
],
"properties": {
"body": {
"required": [
"date"
],
"properties": {
"date": {
"type": "string",
"description": "Date YYYY-MM-DD"
},
"until": {
"type": "string",
"description": "Second date for the difference (optional)"
},
"add_days": {
"type": "integer"
},
"add_years": {
"type": "integer"
},
"add_months": {
"type": "integer"
}
}
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": [
"object",
"null"
],
"properties": {
"date": {
"type": [
"object",
"null"
],
"properties": {
"date": {
"type": [
"string",
"null"
]
},
"leap": {
"type": [
"boolean",
"null"
]
},
"quarter": {
"type": [
"number",
"null"
]
},
"weekday": {
"type": [
"string",
"null"
]
},
"weekend": {
"type": [
"boolean",
"null"
]
},
"week_iso": {
"type": [
"number",
"null"
]
},
"year_iso": {
"type": [
"number",
"null"
]
},
"day_of_year": {
"type": [
"number",
"null"
]
},
"days_in_month": {
"type": [
"number",
"null"
]
}
}
},
"result": {
"type": [
"object",
"null"
],
"properties": {
"date": {
"type": [
"string",
"null"
]
},
"leap": {
"type": [
"boolean",
"null"
]
},
"quarter": {
"type": [
"number",
"null"
]
},
"weekday": {
"type": [
"string",
"null"
]
},
"weekend": {
"type": [
"boolean",
"null"
]
},
"week_iso": {
"type": [
"number",
"null"
]
},
"year_iso": {
"type": [
"number",
"null"
]
},
"day_of_year": {
"type": [
"number",
"null"
]
},
"days_in_month": {
"type": [
"number",
"null"
]
}
}
},
"difference": {
"type": [
"object",
"null"
],
"properties": {
"days": {
"type": [
"number",
"null"
]
},
"until": {
"type": [
"string",
"null"
]
},
"weeks": {
"type": [
"number",
"null"
]
},
"years": {
"type": [
"number",
"null"
]
},
"months": {
"type": [
"number",
"null"
]
},
"total_days": {
"type": [
"number",
"null"
]
},
"weekdays_mon_fri": {
"type": [
"number",
"null"
]
}
}
}
}
}
}
}
}
}
}
}Provenance
- Seen in the source catalog
- 2026-10-20 17:52Z
- Last indexed by Roundhouse
- 2026-10-26 22:40Z
- Last enriched (probe, favicon, geo)
- 2026-10-03 21:45Z
- x402 version
- 2
- Max timeout
- 300s
- Liveness probe
- HTTP 200
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. 29 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 Date calculator | Vextorium 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=Date%20calculator%20%7C%20Vextorium' 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://api.vextorium.com/v1/date-calculator, 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.