ChronoSure
Resolve a local time to an exact UTC instant with explicit DST ambiguity handling, business-day arithmetic, public-holiday status, and working-hour overlap across timezones. Detects ambiguous and nonexistent local times instead of silently shifting them. Declares its IANA tzdb release and per-jurisdiction holiday provenance.
SearchLiveeip155:8453Exactvia cdp
TimezoneBusiness-daysHolidaysDstScheduling
Calls · 30d
42↑ 3.3%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 30 snapshots so far.
$7.10
Verified settled volume
514 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.
42
Calls · 30d
Upstream's own call count for this endpoint, not ours.
8
Unique payers · 30d
Last called 2026-09-24 07:39Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0x9876af0F6D8Ed5155Cd02d1ca56D128601612690The 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≈ $0.01 USD
on Base · exact scheme
Pay 0.01 USDC on Base to 0x9876…12690. The signed payment is good for 1 minute.
- Paid to
- 0x9876…12690
- USD Coin contract
- 0x8335…02913
- Payment window
- 1 minute
- As published
- 10000 smallest units
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x9876af0F6D8Ed5155Cd02d1ca56D128601612690",
"amount": "10000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 60
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"body": {
"timezone": "America/New_York",
"local_time": "2026-11-01T01:30:00",
"ambiguity_policy": "reject"
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"ok": true,
"result": {
"offset": "-04:00",
"overlap": {
"windows": [
{
"end": "2026-06-15T16:00:00Z",
"start": "2026-06-15T13:00:00Z"
}
],
"has_overlap": true
},
"coverage": {
"years": [
2026,
2027
],
"calendar": "US-NY",
"provenance": "US OPM (public domain)"
},
"timezone": "America/New_York",
"ambiguity": "unique",
"candidates": [],
"is_holiday": false,
"is_weekend": false,
"comparisons": [
{
"offset": "+01:00",
"timezone": "Europe/London",
"local_time": "2026-06-15T14:30:00"
}
],
"utc_instant": "2026-06-15T13:30:00Z",
"is_working_day": true,
"business_days_result": null,
"next_valid_working_instant": "2026-06-15T13:30:00Z"
},
"verdict": "resolved",
"evidence": [],
"warnings": [],
"confidence": 1,
"risk_codes": [],
"request_hash": "sha256:7c1e...b904",
"data_versions": {
"tzdb": "2026c",
"holidays": "2026.08.03",
"temporal_source": "polyfill"
},
"policy_version": "2026-08-03.1"
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method",
"bodyType",
"body"
],
"properties": {
"body": {
"type": "object",
"oneOf": [
{
"required": [
"local_time"
]
},
{
"required": [
"instant"
]
}
],
"title": "BusinessTimeRequest",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"timezone"
],
"properties": {
"instant": {
"type": "string",
"examples": [
"2026-11-01T05:30:00Z"
],
"description": "An absolute ISO 8601 instant ending in Z or an explicit offset. Alternative to local_time; send exactly one of the two."
},
"timezone": {
"type": "string",
"examples": [
"America/New_York",
"Pacific/Chatham",
"Antarctica/Troll"
],
"minLength": 1,
"description": "IANA timezone identifier, resolved against tzdb 2026c."
},
"local_time": {
"type": "string",
"pattern": "^\\d{4}-\\d{2}-\\d{2}[T ]\\d{2}:\\d{2}(:\\d{2})?$",
"examples": [
"2026-11-01T01:30:00"
],
"description": "ISO local date and time with NO offset and no Z suffix. This is the field whose meaning can be ambiguous, which is the point of the endpoint."
},
"compare_with": {
"type": "array",
"items": {
"type": "string"
},
"examples": [
[
"Europe/London",
"Asia/Jerusalem"
]
],
"maxItems": 5,
"description": "Other IANA zones to report the same instant in, and to intersect working hours with."
},
"working_hours": {
"type": "object",
"required": [
"start",
"end"
],
"properties": {
"end": {
"type": "string",
"pattern": "^([01]\\d|2[0-3]):[0-5]\\d$"
},
"start": {
"type": "string",
"pattern": "^([01]\\d|2[0-3]):[0-5]\\d$"
}
},
"description": "Local business hours, defaulting to 09:00-17:00. end < start means the window crosses midnight.",
"additionalProperties": false
},
"ambiguity_policy": {
"enum": [
"earlier",
"later",
"compatible",
"reject"
],
"type": "string",
"default": "reject",
"description": "How to read a local time that occurs twice or not at all. Matches Temporal's disambiguation vocabulary. The default, reject, returns verdict \"unknown\" with both candidate instants rather than silently picking one."
},
"holiday_calendar": {
"enum": [
"AU-NSW",
"CA-BC",
"CA-ON",
"DE",
"FR",
"GB-ENG",
"GB-NIR",
"GB-SCT",
"IE",
"IL",
"IN",
"JP",
"NL",
"NZ",
"US",
"US-CA",
"US-NY"
],
"type": "string",
"description": "Jurisdiction whose public holidays and weekend definition apply. An unlisted value is rejected with UNSUPPORTED; this service never falls back to an empty holiday list."
},
"add_business_days": {
"type": "integer",
"maximum": 365,
"minimum": -365,
"description": "Move this many working days from the resolved date, skipping the calendar's weekend days and its public holidays. Zero returns the date unchanged."
}
},
"additionalProperties": false
},
"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",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"ok",
"verdict",
"result",
"request_hash",
"data_versions"
],
"properties": {
"ok": {
"type": "boolean"
},
"result": {
"type": "object",
"properties": {
"offset": {
"type": [
"string",
"null"
]
},
"overlap": {
"type": [
"object",
"null"
]
},
"coverage": {
"type": "object"
},
"timezone": {
"type": "string"
},
"ambiguity": {
"enum": [
"unique",
"ambiguous",
"nonexistent"
],
"type": "string"
},
"candidates": {
"type": "array",
"items": {
"type": "object"
},
"description": "Both candidate instants when the local time is ambiguous or nonexistent."
},
"is_holiday": {
"type": "boolean"
},
"is_weekend": {
"type": "boolean"
},
"comparisons": {
"type": "array",
"items": {
"type": "object"
}
},
"utc_instant": {
"type": [
"string",
"null"
],
"format": "date-time"
},
"is_working_day": {
"type": "boolean"
},
"business_days_result": {
"type": [
"object",
"null"
]
},
"next_valid_working_instant": {
"type": [
"string",
"null"
]
}
}
},
"verdict": {
"enum": [
"resolved",
"unknown"
],
"type": "string",
"description": "unknown when the local time is ambiguous or nonexistent under a reject policy."
},
"evidence": {
"type": "array",
"items": {
"type": "object"
}
},
"warnings": {
"type": "array",
"items": {
"type": "string"
}
},
"risk_codes": {
"type": "array",
"items": {
"type": "string"
}
},
"request_hash": {
"type": "string"
},
"data_versions": {
"type": "object",
"description": "Declares the pinned IANA tzdb release, holiday dataset, and Temporal source."
},
"policy_version": {
"type": "string"
}
}
}
}
}
}
}
}
}Provenance
- Seen in the source catalog
- 2026-09-25 07:38Z
- Last indexed by Roundhouse
- 2026-09-25 10:50Z
- Last enriched (probe, favicon, geo)
- 2026-09-20 12:45Z
- x402 version
- 2
- Max timeout
- 60s
- Liveness probe
- HTTP 404
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. 30 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 ChronoSure 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=ChronoSure' 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://chrono.schemasure.com/v1/business-time, 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.