2s Calendar API
The calendar API from 2s — 4 operation(s) for calendar.
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OpenAPI Specification
openapi: 3.2.0
info:
title: 2s — the (most) everything Calendar API
version: '1'
summary: The (most) everything API.
description: 'The (most) everything API for AI agents: 575+ pay-per-call endpoints on one origin.'
contact:
name: 2s
url: https://2s.io
email: alley@2s.io
x-logo:
url: https://2s.io/icon-512.png
altText: 2s
x-guidance: 'Pay-per-call REST API for AI agents — hundreds of endpoints returning ground-truth data (US public records, company & legal identifiers, finance/SEC, crypto/web3, security & CVEs, medical codes, weather & geocoding, agriculture, energy, maritime, music, and more). Every endpoint is paid per call in USDC via x402 (Base or Solana) — no API key, no signup. Call any endpoint with no auth to get a 402 PaymentRequirements envelope, sign it (EIP-3009 on Base, partial SPL transfer on Solana), and retry with the PAYMENT-SIGNATURE header. Add ?trial=1 for one free real call per endpoint per hour to test before paying. To discover the right endpoint: GET https://2s.io/api/directory for the full catalog, or GET https://2s.io/api/search/endpoints?q=<natural-language task> for a ranked match. Per-call price is on each operation as x-payment-info (from $0.001). Batch up to 50 calls behind one payment via POST https://2s.io/api/batch/run.'
servers:
- url: https://2s.io
tags:
- name: Calendar
paths:
/api/calendar/business-days:
get:
tags:
- Calendar
summary: Holiday-aware business-day calculator for 200+ countries
description: 'Holiday-aware business-day calculator for 200+ countries. Three modes: pass start + addDays (signed integer) to shift a date by N business days; pass start + end to count business days between two dates (exclusive of start, inclusive of end); pass start alone to check one date (is it a business day, which holiday, next/previous business day). Query: country (ISO 3166-1 alpha-2), start (YYYY-MM-DD), optional region (subdivision code), addDays XOR end, optional weekend (comma-separated days, default sat,sun — e.g. fri,sat for the Gulf), optional types (holiday types treated as closures, default public,bank). Skipped holidays are itemized in the response. Use for payment terms, SLA deadlines, and delivery-date math.'
operationId: calendar_business-days
deprecated: false
security:
- x402Payment: []
responses:
'200':
description: 'Normalized envelope: items = [one calculation result], shape depends on mode (check | add | between); total = 1.'
content:
application/json:
schema:
type: object
required:
- data
- meta
properties:
data:
type: object
properties:
ok:
type: boolean
enum:
- true
items:
type: array
items:
type: object
properties:
mode:
type: string
description: check | add | between — which calculation ran, inferred from the params.
country:
type: string
description: Resolved ISO country code.
region:
type: string
nullable: true
description: Resolved subdivision code, or null.
start:
type: string
description: Echoed anchor date.
addDays:
type: integer
description: 'add mode: the requested shift.'
result:
type: string
description: 'add mode: the resulting business date, YYYY-MM-DD.'
calendarDaysSpanned:
type: integer
description: 'add mode: calendar days between start and result.'
holidaysSkipped:
type: array
items:
type: object
properties:
date:
type: string
name:
type: string
required:
- date
- name
additionalProperties: false
description: 'add mode: weekday holidays skipped along the way.'
end:
type: string
description: 'between mode: echoed end date.'
businessDays:
type: integer
description: 'between mode: business days after start through end.'
calendarDays:
type: integer
description: 'between mode: calendar days between start and end.'
holidaysInRange:
type: array
items:
type: object
properties:
date:
type: string
name:
type: string
required:
- date
- name
additionalProperties: false
description: 'between mode: weekday holidays inside the range.'
isBusinessDay:
type: boolean
description: 'check mode: true when start is neither weekend nor closure holiday.'
isWeekend:
type: boolean
description: 'check mode: start falls on a configured weekend day.'
isHoliday:
type: boolean
description: 'check mode: start is a closure holiday.'
holidayNames:
type: array
items:
type: string
description: 'check mode: names of holidays on start, if any.'
nextBusinessDay:
type: string
description: 'check mode: first business day after start.'
previousBusinessDay:
type: string
description: 'check mode: last business day before start.'
required:
- mode
- country
- region
- start
additionalProperties: false
total:
type: integer
nullable: true
description: Total matching rows upstream; null when unknown.
source:
$ref: '#/components/schemas/Source'
required:
- ok
- items
- total
- source
additionalProperties: false
meta:
$ref: '#/components/schemas/CallMeta'
'400':
$ref: '#/components/responses/BadRequest'
'402':
$ref: '#/components/responses/PaymentRequired'
'405':
$ref: '#/components/responses/MethodNotAllowed'
'500':
$ref: '#/components/responses/ServerError'
'502':
$ref: '#/components/responses/UpstreamError'
x-2s-id: calendar.business-days
x-2s-version: null
x-2s-price:
usd: 0.0025
x-2s-accepts:
- x402
x-2s-response-shape: normalized
x-payment-info:
price:
mode: fixed
currency: USD
amount: '0.002500'
protocols:
- x402: {}
parameters:
- name: country
in: query
required: true
description: ISO 3166-1 alpha-2 country code, e.g. US, DE, JP.
schema:
type: string
minLength: 2
maxLength: 2
- name: start
in: query
required: true
description: Anchor date, YYYY-MM-DD.
schema:
type: string
pattern: ^\d{4}-\d{2}-\d{2}$
- name: addDays
in: query
required: false
description: Signed number of business days to add to start (non-zero, ±3660). Mutually exclusive with end.
schema:
type: integer
minimum: -3660
maximum: 3660
- name: end
in: query
required: false
description: End date YYYY-MM-DD. Counts business days after start through end. Mutually exclusive with addDays.
schema:
type: string
pattern: ^\d{4}-\d{2}-\d{2}$
- name: region
in: query
required: false
description: Optional subdivision code — e.g. CA for US-California, BY for DE-Bavaria.
schema:
type: string
minLength: 1
maxLength: 10
- name: weekend
in: query
required: false
description: Optional comma-separated weekend days (mon..sun). Default "sat,sun"; use "fri,sat" for Gulf states.
schema:
type: string
maxLength: 30
- name: types
in: query
required: false
description: Optional comma-separated holiday types treated as business closures (public, bank, school, optional, observance). Default "public,bank".
schema:
type: string
maxLength: 60
- $ref: '#/components/parameters/TrialMode'
/api/calendar/earnings:
get:
tags:
- Calendar
summary: Earnings release calendar - which US-listed companies
description: Earnings release calendar — which US-listed companies report earnings in a date window, with expected and (once reported) actual EPS and revenue, and the time of day (before/after market). Pass a from/to window (YYYY-MM-DD; defaults to the next 14 days) and optionally a ticker to filter to one company. Agents cannot recall future earnings dates — this is the schedule. Data by Finnhub.
operationId: calendar_earnings
deprecated: false
security:
- x402Payment: []
responses:
'200':
description: 'Normalized: items = scheduled/reported earnings events in the window.'
content:
application/json:
schema:
type: object
required:
- data
- meta
properties:
data:
type: object
properties:
ok:
type: boolean
enum:
- true
items:
type: array
items:
type: object
properties:
date:
type: string
nullable: true
description: Report date (yyyy-mm-dd).
symbol:
type: string
nullable: true
year:
type: number
nullable: true
quarter:
type: number
nullable: true
epsEstimate:
type: number
nullable: true
epsActual:
type: number
nullable: true
revenueEstimate:
type: number
nullable: true
revenueActual:
type: number
nullable: true
hour:
type: string
nullable: true
description: bmo (before open), amc (after close), or dmh (during).
required:
- date
- symbol
- year
- quarter
- epsEstimate
- epsActual
- revenueEstimate
- revenueActual
- hour
additionalProperties: false
total:
type: integer
nullable: true
description: Total matching rows upstream; null when unknown.
source:
$ref: '#/components/schemas/Source'
meta:
type: object
properties:
from:
type: string
to:
type: string
symbol:
type: string
nullable: true
required:
- from
- to
- symbol
additionalProperties: false
required:
- ok
- items
- total
- source
additionalProperties: false
meta:
$ref: '#/components/schemas/CallMeta'
'400':
$ref: '#/components/responses/BadRequest'
'402':
$ref: '#/components/responses/PaymentRequired'
'405':
$ref: '#/components/responses/MethodNotAllowed'
'500':
$ref: '#/components/responses/ServerError'
'502':
$ref: '#/components/responses/UpstreamError'
x-2s-id: calendar.earnings
x-2s-version: null
x-2s-price:
usd: 0.0025
x-2s-accepts:
- x402
x-2s-response-shape: normalized
x-payment-info:
price:
mode: fixed
currency: USD
amount: '0.002500'
protocols:
- x402: {}
parameters:
- name: from
in: query
required: false
description: 'Start date YYYY-MM-DD (default: today).'
schema:
type: string
pattern: ^\d{4}-\d{2}-\d{2}$
- name: to
in: query
required: false
description: 'End date YYYY-MM-DD (default: 14 days out).'
schema:
type: string
pattern: ^\d{4}-\d{2}-\d{2}$
- name: ticker
in: query
required: false
description: Filter to a single US ticker.
schema:
type: string
minLength: 1
maxLength: 12
pattern: ^[A-Za-z][A-Za-z0-9.\-]{0,11}$
- $ref: '#/components/parameters/TrialMode'
/api/calendar/holidays:
get:
tags:
- Calendar
summary: List the official holidays for a country and year, with
description: 'List the official holidays for a country and year, with exact observed dates including substitute days (e.g. a Saturday July 4th observed on Friday). Query: country (ISO 3166-1 alpha-2, 200+ supported), year, optional region (subdivision code like CA for US-California or BY for DE-Bavaria), optional types filter (public, bank, school, optional, observance — comma-separated), optional lang (ISO 639-1) for localized names. Returns one item per holiday: { date (YYYY-MM-DD), name, type, substitute, rule }. Dates are computed from maintained per-country rules — including movable feasts and lunar-calendar holidays — so they stay correct year over year. Use for scheduling, delivery estimates, payment terms, and SLA math.'
operationId: calendar_holidays
deprecated: false
security:
- x402Payment: []
responses:
'200':
description: 'Normalized envelope: items = holidays for the requested country/region/year, sorted by date; total = count.'
content:
application/json:
schema:
type: object
required:
- data
- meta
properties:
data:
type: object
properties:
ok:
type: boolean
enum:
- true
items:
type: array
items:
type: object
properties:
date:
type: string
description: Observed date, YYYY-MM-DD.
name:
type: string
description: Holiday name (localized when lang is passed and a translation exists).
type:
type: string
description: public | bank | school | optional | observance.
substitute:
type: boolean
description: True when this entry is a substitute/observed day for a holiday falling on a weekend.
rule:
type: string
nullable: true
description: The rule the date was computed from, e.g. "3rd monday in January".
required:
- date
- name
- type
- substitute
- rule
additionalProperties: false
total:
type: integer
nullable: true
description: Total matching rows upstream; null when unknown.
source:
$ref: '#/components/schemas/Source'
required:
- ok
- items
- total
- source
additionalProperties: false
meta:
$ref: '#/components/schemas/CallMeta'
'400':
$ref: '#/components/responses/BadRequest'
'402':
$ref: '#/components/responses/PaymentRequired'
'405':
$ref: '#/components/responses/MethodNotAllowed'
'500':
$ref: '#/components/responses/ServerError'
'502':
$ref: '#/components/responses/UpstreamError'
x-2s-id: calendar.holidays
x-2s-version: null
x-2s-price:
usd: 0.0025
x-2s-accepts:
- x402
x-2s-response-shape: normalized
x-payment-info:
price:
mode: fixed
currency: USD
amount: '0.002500'
protocols:
- x402: {}
parameters:
- name: country
in: query
required: true
description: ISO 3166-1 alpha-2 country code, e.g. US, DE, JP. 200+ countries supported.
schema:
type: string
minLength: 2
maxLength: 2
- name: year
in: query
required: true
description: Calendar year (1950-2100).
schema:
type: integer
minimum: 1950
maximum: 2100
- name: region
in: query
required: false
description: Optional subdivision code — e.g. CA for US-California, BY for DE-Bavaria, ON for CA-Ontario.
schema:
type: string
minLength: 1
maxLength: 10
- name: types
in: query
required: false
description: 'Optional comma-separated holiday-type filter: public, bank, school, optional, observance. Default: all types.'
schema:
type: string
maxLength: 60
- name: lang
in: query
required: false
description: Optional ISO 639-1 language code for localized holiday names, e.g. en, de, fr.
schema:
type: string
minLength: 2
maxLength: 5
- $ref: '#/components/parameters/TrialMode'
/api/calendar/ipo:
get:
tags:
- Calendar
summary: IPO calendar - companies going public (or recently public)
description: IPO calendar — companies going public (or recently public) in a date window, with the expected date, symbol, name, exchange, price range, number of shares, total offering value, and status (expected/priced/filed/withdrawn). Pass a from/to window (YYYY-MM-DD; defaults to a ±30-day span around today). Data by Finnhub.
operationId: calendar_ipo
deprecated: false
security:
- x402Payment: []
responses:
'200':
description: 'Normalized: items = IPO events in the window.'
content:
application/json:
schema:
type: object
required:
- data
- meta
properties:
data:
type: object
properties:
ok:
type: boolean
enum:
- true
items:
type: array
items:
type: object
properties:
date:
type: string
nullable: true
symbol:
type: string
nullable: true
name:
type: string
nullable: true
exchange:
type: string
nullable: true
status:
type: string
nullable: true
price:
type: string
nullable: true
numberOfShares:
type: number
nullable: true
totalSharesValue:
type: number
nullable: true
required:
- date
- symbol
- name
- exchange
- status
- price
- numberOfShares
- totalSharesValue
additionalProperties: false
total:
type: integer
nullable: true
description: Total matching rows upstream; null when unknown.
source:
$ref: '#/components/schemas/Source'
meta:
type: object
properties:
from:
type: string
to:
type: string
required:
- from
- to
additionalProperties: false
required:
- ok
- items
- total
- source
additionalProperties: false
meta:
$ref: '#/components/schemas/CallMeta'
'400':
$ref: '#/components/responses/BadRequest'
'402':
$ref: '#/components/responses/PaymentRequired'
'405':
$ref: '#/components/responses/MethodNotAllowed'
'500':
$ref: '#/components/responses/ServerError'
'502':
$ref: '#/components/responses/UpstreamError'
x-2s-id: calendar.ipo
x-2s-version: null
x-2s-price:
usd: 0.0025
x-2s-accepts:
- x402
x-2s-response-shape: normalized
x-payment-info:
price:
mode: fixed
currency: USD
amount: '0.002500'
protocols:
- x402: {}
parameters:
- name: from
in: query
required: false
description: 'Start date YYYY-MM-DD (default: 15 days ago).'
schema:
type: string
pattern: ^\d{4}-\d{2}-\d{2}$
- name: to
in: query
required: false
description: 'End date YYYY-MM-DD (default: 30 days out).'
schema:
type: string
pattern: ^\d{4}-\d{2}-\d{2}$
- $ref: '#/components/parameters/TrialMode'
components:
schemas:
Source:
type: object
description: 'Provenance of the data: upstream provider, source URL, and license.'
properties:
provider:
type: string
description: Upstream data provider.
url:
type: string
description: Source URL or documentation link.
license:
type: string
description: License / usage terms for the data.
CallMeta:
type: object
description: Per-call meta envelope — endpoint id, cost, caller kind, settlement details.
X402PaymentRequiredV2:
type: object
description: x402 v2 PaymentRequired envelope. Pick any entry from accepts[], sign for that rail, retry with the PAYMENT-SIGNATURE header.
required:
- x402Version
- accepts
properties:
x402Version:
type: integer
const: 2
error:
type: string
description: Human-readable reason payment is required.
resource:
type: string
description: The resource URL being purchased.
accepts:
type: array
description: Payment requirement options, one per supported network (Base USDC, Solana USDC).
items:
type: object
required:
- scheme
- network
- amount
- asset
- payTo
- maxTimeoutSeconds
properties:
scheme:
type: string
enum:
- exact
network:
type: string
description: CAIP-2 network id, e.g. "eip155:8453" (Base) or "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp".
amount:
type: string
description: Price in atomic asset units (USDC has 6 decimals).
asset:
type: string
description: Asset contract address / mint.
payTo:
type: string
description: Treasury address to pay.
maxTimeoutSeconds:
type: integer
extra:
type: object
description: 'Rail-specific extras (EVM: EIP-712 domain name/version; Solana: feePayer).'
additionalProperties: true
extensions:
type: object
description: Optional discovery metadata (e.g. bazaar input/output schemas).
additionalProperties: true
responses:
PaymentRequired:
description: Payment required. Body contains the x402 PaymentRequirements envelope with a multi-network accepts array; the per-call price is in accepts[].amount (and on the operation as x-2s-price). Sign for whichever rail you hold USDC on (EIP-3009 for Base, partial SPL transfer for Solana) and retry with the PAYMENT-SIGNATURE header (X-PAYMENT also accepted for v1 clients).
content:
application/json:
schema:
$ref: '#/components/schemas/X402PaymentRequiredV2'
UpstreamError:
description: Upstream provider error.
MethodNotAllowed:
description: Method not allowed — see `Allow` header for the supported method.
ServerError:
description: Internal server error.
BadRequest:
description: Bad request — invalid parameters.
parameters:
TrialMode:
name: trial
in: query
required: false
description: 'Try before you buy. Set to 1 for one free real call per endpoint per hour — no wallet or payment needed — to verify the endpoint before paying. Equivalent to sending the "X-2s-Trial: 1" request header. Works on every endpoint.'
schema:
type: integer
enum:
- 1
securitySchemes:
x402Payment:
type: apiKey
in: header
name: PAYMENT-SIGNATURE
description: 'x402 protocol v2: base64-encoded PaymentPayload. Call any paid endpoint without auth to receive a 402 with a multi-network PaymentRequirements envelope. Sign for either rail: EIP-3009 transferWithAuthorization (Base USDC) OR a partial SPL token transfer (Solana USDC). Retry with PAYMENT-SIGNATURE header. X-PAYMENT is also accepted for v1 buyer clients. See https://x402.org.'