bankday-dev

bankday-dev Business Day API

The Business Day API from bankday-dev — 1 operation(s) for business day.

Documentation GitHub OpenAPI

Operations 1

GET /v1/business-day Is a date a business day? #

Specifications

⚙

OpenAPI

https://artifacts.apis.io/bankday-dev/openapi/bankday-dev-business-day-api-openapi.yml

Work with this as data

Every API here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for apis

7 MCP tools reach this

find_apisBrowse and filter every API in the catalog.
get_api_artifactsOne API's artifacts, grouped by type.
get_openapiThe primary OpenAPI for this API.
find_similar_apisAPIs that look like this one.
apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
resolveTurn a domain, URL or GitHub org into the provider it belongs to.
find_cohortsEvery scored population of providers in the catalog.

All 92 tools →

Call it yourself

curl for this page

This API

curl "https://apis.io/api/v1/apis/bankday-dev:bankday-dev-business-day-api"

All apis

curl "https://apis.io/api/v1/apis?limit=25"

Discovery needs no key. Ratings and market analysis are Pro.

Get an API key

Free tier, no form to fill in. Signing in shares your email address with us — we store it to create your key and to recognise you if you sign in with another provider. See our Privacy Policy and Terms.

GitHub Google LinkedIn

A second provider on the same verified email joins the account you already have.

OpenAPI Specification

openapi: 3.2.0
info:
  title: Bankday Business Day API
  version: 1.0.0
  description: Business days, holidays and settlement dates for payment rails, exchanges and countries.
  contact:
    url: https://bankday.dev
servers:
- url: https://bankday.dev
security:
- bearer: []
tags:
- name: Business Day
paths:
  /v1/business-day:
    get:
      operationId: business_day
      summary: Is a date a business day?
      description: 'Returns whether date is a business day on the calendar, why not (weekend or the holiday name, per calendar), and the next and previous business days. On shortened trading sessions (e.g. NYSE 1:00 p.m. closes) the response also includes early_closes with the local close time. Alias: /v1/is-business-day.'
      parameters:
      - name: calendar
        in: query
        required: true
        description: Calendar id, or up to 10 comma-separated ids for a joint calendar (e.g. us-fed,eu-target2). Aliases such as nyse, ach, sepa, bacs are accepted.
        schema:
          type: string
      - name: date
        in: query
        required: true
        description: YYYY-MM-DD
        schema:
          type: string
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                type: object
              example:
                calendar: us-fed
                date: '2026-10-12'
                weekday: Monday
                business_day: false
                closures:
                - calendar: us-fed
                  reason: holiday
                  name: Columbus Day
                next_business_day: '2026-10-13'
                previous_business_day: '2026-10-09'
        '400':
          $ref: '#/components/responses/Error'
        '401':
          $ref: '#/components/responses/Error'
        '404':
          $ref: '#/components/responses/Error'
        '422':
          $ref: '#/components/responses/Error'
        '429':
          $ref: '#/components/responses/Error'
      tags:
      - Business Day
components:
  responses:
    Error:
      description: Error
      content:
        application/json:
          schema:
            type: object
            properties:
              error:
                type: object
                properties:
                  code:
                    type: string
                  message:
                    type: string
  securitySchemes:
    bearer:
      type: http
      scheme: bearer