Holiday Calendar API
x402 Atlas provides real-time x402 analytics for autonomous APIs on Base. Track transactions, discover trends, and analyze the x402 ecosystem.
MediaLiveeip155:8453Exactvia cdp
Next-holidayPublic-holidaysOfficial-holidaysCountry-calendarRegional-holidays
Calls · 30d
3→ 0%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 30 snapshots so far.
$24.55
Verified settled volume
1,041 settlements proven x402 by their on-chain EIP-3009 marker.
$0.0050
Listed price
As published in the catalog. Always read the live 402 before paying.
3
Calls · 30d
Upstream's own call count for this endpoint, not ours.
2
Unique payers · 30d
Last called 2026-09-15 06:30Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0x8C128f1Ee62Bb5e47867CfbAe2ad89be325Df1b2The 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.
{
"hint": "This endpoint requires x402 payment. The price and payment options are in the PAYMENT-REQUIRED response header (x402 v2). Pay with an x402 client, then retry to receive the data.",
"llms": "https://holidays.use.x402atlas.com/llms.txt",
"error": "payment_required",
"price": "$0.005 per call",
"method": "GET",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"tier": "standard",
"version": "2",
"merchant": "x402Atlas"
},
"payTo": "0x8C128f1Ee62Bb5e47867CfbAe2ad89be325Df1b2",
"amount": "5000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
},
{
"asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
"extra": {
"name": "USD Coin",
"tier": "standard",
"version": "2",
"merchant": "x402Atlas"
},
"payTo": "0x8C128f1Ee62Bb5e47867CfbAe2ad89be325Df1b2",
"amount": "5000",
"scheme": "exact",
"network": "eip155:137",
"maxTimeoutSeconds": 300
},
{
"asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
"extra": {
"name": "USD Coin",
"tier": "standard",
"version": "2",
"merchant": "x402Atlas"
},
"payTo": "0x8C128f1Ee62Bb5e47867CfbAe2ad89be325Df1b2",
"amount": "5000",
"scheme": "exact",
"network": "eip155:42161",
"maxTimeoutSeconds": 300
}
],
"contact": {
"email": "support@x402atlas.com"
},
"openapi": "https://holidays.use.x402atlas.com/openapi.json",
"resource": {
"url": "https://holidays.use.x402atlas.com/next",
"tags": [
"next-holiday",
"public-holidays",
"official-holidays",
"country-calendar",
"regional-holidays",
"scheduling"
],
"mimeType": "application/json",
"description": "Next official public holiday after a date for a supported country or regional subdivision.",
"serviceName": "Holiday Calendar API"
},
"x402Version": 2,
"documentation": "https://holidays.use.x402atlas.com/docs"
}Accepts
The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.
0.005USDC≈ $0.005 USD
on Base · exact scheme
Pay 0.005 USDC on Base to 0x8C12…Df1b2. The signed payment is good for 5 minutes.
- Paid to
- 0x8C12…Df1b2
- USD Coin contract
- 0x8335…02913
- Payment window
- 5 minutes
- As published
- 5000 smallest units
5000units
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
- 0x8C12…Df1b2
- Token contract
- 0x3c49…c3359
- Payment window
- 5 minutes
5000units
on Arbitrum · 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
- 0x8C12…Df1b2
- Token contract
- 0xaf88…e5831
- Payment window
- 5 minutes
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"tier": "standard",
"version": "2",
"merchant": "x402Atlas"
},
"payTo": "0x8C128f1Ee62Bb5e47867CfbAe2ad89be325Df1b2",
"amount": "5000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
},
{
"asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
"extra": {
"name": "USD Coin",
"tier": "standard",
"version": "2",
"merchant": "x402Atlas"
},
"payTo": "0x8C128f1Ee62Bb5e47867CfbAe2ad89be325Df1b2",
"amount": "5000",
"scheme": "exact",
"network": "eip155:137",
"maxTimeoutSeconds": 300
},
{
"asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
"extra": {
"name": "USD Coin",
"tier": "standard",
"version": "2",
"merchant": "x402Atlas"
},
"payTo": "0x8C128f1Ee62Bb5e47867CfbAe2ad89be325Df1b2",
"amount": "5000",
"scheme": "exact",
"network": "eip155:42161",
"maxTimeoutSeconds": 300
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"after": "2026-02-01",
"country": "DE",
"language": "EN",
"subdivision": "DE-BE"
}
},
"output": {
"type": "json",
"example": {
"after": "2026-02-01",
"country": "DE",
"holiday": {
"name": "International Women's Day",
"type": "Public",
"end_date": "2026-03-08",
"nationwide": false,
"start_date": "2026-03-08",
"subdivisions": [
"DE-BE"
],
"regional_scope": "Regional",
"temporal_scope": "FullDay"
},
"language": "EN",
"queried_at": "2026-07-27T12:00:00Z",
"subdivision": "DE-BE"
}
}
},
"tags": [
"next-holiday",
"public-holidays",
"official-holidays",
"country-calendar",
"regional-holidays",
"scheduling"
],
"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": [
"country",
"after"
],
"properties": {
"after": {
"type": "string",
"format": "date",
"description": "Find the first holiday strictly after this ISO date"
},
"country": {
"enum": [
"AD",
"AL",
"AT",
"BE",
"BG",
"BR",
"BY",
"CH",
"CZ",
"DE",
"EE",
"ES",
"FR",
"HR",
"HU",
"IE",
"IT",
"LI",
"LT",
"LU",
"LV",
"MC",
"MD",
"MT",
"MX",
"NL",
"PL",
"PT",
"RO",
"RS",
"SE",
"SI",
"SK",
"SM",
"VA",
"ZA"
],
"type": "string",
"description": "Supported ISO 3166-1 alpha-2 country code: AD Andorra; AL Albania; AT Austria; BE Belgium; BG Bulgaria; BR Brazil; BY Belarus; CH Switzerland; CZ Czechia; DE Germany; EE Estonia; ES Spain; FR France; HR Croatia; HU Hungary; IE Ireland; IT Italy; LI Liechtenstein; LT Lithuania; LU Luxembourg; LV Latvia; MC Monaco; MD Moldova; MT Malta; MX Mexico; NL Netherlands; PL Poland; PT Portugal; RO Romania; RS Serbia; SE Sweden; SI Slovenia; SK Slovakia; SM San Marino; VA Vatican City; ZA South Africa."
},
"language": {
"type": "string",
"pattern": "^[A-Z]{2}$",
"description": "Optional two-letter ISO 639-1 result language. Defaults to English when available."
},
"subdivision": {
"type": "string",
"pattern": "^[A-Z]{2}-.+$",
"maxLength": 20,
"description": "Optional regional subdivision code beginning with the selected country code, for example DE-BE."
}
}
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"required": [
"country",
"after",
"queried_at"
],
"properties": {
"note": {
"type": "string"
},
"after": {
"type": "string",
"format": "date"
},
"country": {
"type": "string"
},
"holiday": {
"type": "object",
"required": [
"name",
"start_date",
"end_date",
"type",
"nationwide",
"subdivisions"
],
"properties": {
"name": {
"type": "string",
"description": "Holiday name in the requested language when available"
},
"type": {
"enum": [
"Public",
"Bank",
"Optional",
"School",
"BackToSchool",
"EndOfLessons"
],
"type": "string"
},
"end_date": {
"type": "string",
"format": "date"
},
"nationwide": {
"type": "boolean"
},
"start_date": {
"type": "string",
"format": "date"
},
"subdivisions": {
"type": "array",
"items": {
"type": "string"
}
},
"regional_scope": {
"enum": [
"National",
"Regional",
"Local"
],
"type": "string"
},
"temporal_scope": {
"enum": [
"FullDay",
"HalfDay"
],
"type": "string"
}
}
},
"language": {
"type": "string"
},
"queried_at": {
"type": "string",
"format": "date-time"
},
"subdivision": {
"type": "string"
}
}
}
}
}
}
},
"category": "calendar"
}
}Provenance
- Seen in the source catalog
- 2026-09-15 06:30Z
- Last indexed by Roundhouse
- 2026-09-24 10:40Z
- Last enriched (probe, favicon, geo)
- 2026-09-12 01:16Z
- x402 version
- 2
- Max timeout
- 300s
- 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. 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 Holiday Calendar API 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=Holiday%20Calendar%20API' 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://holidays.use.x402atlas.com/next, 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.