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.'