Timezones + Date Math
Keyronne: things I
SearchLiveeip155:8453Exactvia cdp
DatetimeTimezoneDate-mathIso8601Unix
Settlements · 30d
56↓ 38%
No per-endpoint history for this service yet, so this is payments indexed to its PROVIDER's wallet over 30 days.
$2.52
Verified settled volume
915 settlements proven x402 by their on-chain EIP-3009 marker.
$0.0010
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.
1
Unique payers · 30d
Last called 2026-07-15 08:39Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0xB86F95EF5FA904318Ea9Df3b59AdCe099b478fC4The 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.
{
"error": "PAYMENT-SIGNATURE header is required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xB86F95EF5FA904318Ea9Df3b59AdCe099b478fC4",
"amount": "1000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 60
}
],
"resource": {
"url": "https://keyronne.com/api/datetime",
"tags": [
"datetime",
"timezone",
"date-math",
"iso8601",
"unix"
],
"mimeType": "application/json",
"description": "The timezone conversions and date arithmetic LLMs get wrong, done exactly. Convert any ISO timestamp or Unix time into one or many IANA timezones (with UTC offset and weekday), add or subtract durations, and diff two instants into days/hours/minutes plus a humanized string. Omit \"datetime\" to get the current time. Uses the IANA timezone database. POST a JSON body like: {\"datetime\":\"2026-07-08T14:30:00Z\",\"timezone\":\"America/New_York\"}",
"serviceName": "Timezones + Date Math"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"datetime": "2026-07-08T14:30:00Z",
"timezone": "America/New_York"
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"result": {
"iso": "2026-07-08T14:30:00.000Z",
"local": "2026-07-08T10:30:00",
"weekday": "Wed",
"timeZone": "America/New_York",
"utcOffset": "-04:00",
"unixSeconds": 1783535400
}
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"properties": {
"body": {
"type": "object",
"properties": {
"add": {
"type": "object",
"properties": {
"unit": {
"enum": [
"ms",
"seconds",
"minutes",
"hours",
"days",
"weeks"
],
"type": "string"
},
"amount": {
"type": "number"
}
},
"description": "Add a duration (negative amount subtracts)."
},
"until": {
"description": "Another datetime; returns the difference from \"datetime\" to this."
},
"datetime": {
"description": "ISO 8601 string or Unix timestamp (seconds or millis). Defaults to now."
},
"timezone": {
"type": "string",
"description": "IANA timezone for the result, e.g. \"Asia/Tokyo\". Default UTC."
},
"timezones": {
"type": "array",
"items": {
"type": "string"
},
"description": "Convert into several zones at once."
}
}
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"bodyType": {
"enum": [
"json"
],
"type": "string"
}
}
},
"output": {
"type": "object",
"properties": {
"result": {
"description": "Zoned time (object), or an array when \"timezones\" is used."
},
"applied": {
"type": "object",
"description": "Present when \"add\" is given."
},
"difference": {
"type": "object",
"description": "Present when \"until\" is given."
}
}
}
}
}
}
},
"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.
0.001USDC≈ $0.001 USD
on Base · exact scheme
Pay 0.001 USDC on Base to 0xB86F…78fC4. The signed payment is good for 1 minute.
- Paid to
- 0xB86F…78fC4
- USD Coin contract
- 0x8335…02913
- Payment window
- 1 minute
- As published
- 1000 smallest units
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xB86F95EF5FA904318Ea9Df3b59AdCe099b478fC4",
"amount": "1000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 60
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"body": {
"datetime": "2026-07-08T14:30:00Z",
"timezone": "America/New_York"
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"result": {
"iso": "2026-07-08T14:30:00.000Z",
"local": "2026-07-08T10:30:00",
"weekday": "Wed",
"timeZone": "America/New_York",
"utcOffset": "-04:00",
"unixSeconds": 1783535400
}
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"properties": {
"body": {
"type": "object",
"properties": {
"add": {
"type": "object",
"properties": {
"unit": {
"enum": [
"ms",
"seconds",
"minutes",
"hours",
"days",
"weeks"
],
"type": "string"
},
"amount": {
"type": "number"
}
},
"description": "Add a duration (negative amount subtracts)."
},
"until": {
"description": "Another datetime; returns the difference from \"datetime\" to this."
},
"datetime": {
"description": "ISO 8601 string or Unix timestamp (seconds or millis). Defaults to now."
},
"timezone": {
"type": "string",
"description": "IANA timezone for the result, e.g. \"Asia/Tokyo\". Default UTC."
},
"timezones": {
"type": "array",
"items": {
"type": "string"
},
"description": "Convert into several zones at once."
}
}
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"bodyType": {
"enum": [
"json"
],
"type": "string"
}
}
},
"output": {
"type": "object",
"properties": {
"result": {
"description": "Zoned time (object), or an array when \"timezones\" is used."
},
"applied": {
"type": "object",
"description": "Present when \"add\" is given."
},
"difference": {
"type": "object",
"description": "Present when \"until\" is given."
}
}
}
}
}
}
}Provenance
- Seen in the source catalog
- 2026-07-15 08:39Z
- Last indexed by Roundhouse
- 2026-08-10 08:20Z
- Last enriched (probe, favicon, geo)
- 2026-09-14 10:45Z
- x402 version
- 2
- Max timeout
- 60s
- 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
No per-endpoint history for this service yet, so this is payments indexed to its PROVIDER's wallet over 30 days. Verified volume counts only settlements with an on-chain EIP-3009 marker.
Show the promptHide the prompt
Using Roundhouse, look up the x402 service Timezones + Date Math 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=Timezones%20%2B%20Date%20Math' 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://keyronne.com/api/datetime, 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. Mint a personal key for $0.01 at GET https://api.roundhouseai.io/v0/test/x402, or use an organization key from https://roundhouseai.io/dashboard/team. If you do not have Roundhouse tools or skills installed, read https://roundhouseai.io/skill.md first — it is the whole procedure.