> ## Documentation Index
> Fetch the complete documentation index at: https://docs.fincept.in/llms.txt
> Use this file to discover all available pages before exploring further.

# List Conventions

> Retrieve a list of all supported day count conventions. Day count conventions define how to calculate the fraction of a year between two dates, which is critical for interest accrual calculations. Different markets and instruments use different conventions. [Tier: FREE, Credits: 0]



## OpenAPI

````yaml api-specs/scheduling.json get /quantlib/scheduling/daycount/conventions
openapi: 3.1.0
info:
  title: FinceptQuantLib API - Scheduling
  description: Scheduling module endpoints for FinceptQuantLib API
  version: 3.0.0
  contact:
    name: Fincept API Support
    url: https://fincept.in
servers:
  - url: https://api.fincept.in
    description: Fincept API Production Server
security:
  - APIKeyHeader: []
tags:
  - name: quantlib-scheduling
    description: API endpoints for scheduling operations
paths:
  /quantlib/scheduling/daycount/conventions:
    get:
      tags:
        - quantlib-scheduling
      summary: List Conventions
      description: >-
        Retrieve a list of all supported day count conventions. Day count
        conventions define how to calculate the fraction of a year between two
        dates, which is critical for interest accrual calculations. Different
        markets and instruments use different conventions. [Tier: FREE, Credits:
        0]
      operationId: list_conventions_quantlib_scheduling_daycount_conventions_get
      responses:
        '200':
          description: Successful Response
          content:
            application/json:
              schema:
                type: object
                properties:
                  success:
                    type: boolean
                    example: true
                  data:
                    type: array
                    items:
                      type: string
                    description: List of supported day count convention names
                    example:
                      - ACT/360
                      - ACT/365
                      - ACT/365 Actual
                      - ACT/ACT ISDA
                      - 30/360
                      - 30E/360
                      - 30E/360 ISDA
                      - 30/360 European
                      - Business/252
              example:
                success: true
                data:
                  - ACT/360
                  - ACT/365
                  - ACT/365 Actual
                  - ACT/ACT ISDA
                  - 30/360
                  - 30E/360
                  - 30E/360 ISDA
                  - 30/360 European
                  - Business/252
        '401':
          $ref: '#/components/responses/UnauthorizedError'
        '402':
          $ref: '#/components/responses/InsufficientTierError'
      security:
        - APIKeyHeader: []
components:
  responses:
    UnauthorizedError:
      description: Authentication information is missing or invalid
      content:
        application/json:
          schema:
            type: object
            properties:
              detail:
                type: string
                example: Invalid API key
    InsufficientTierError:
      description: API tier insufficient for this endpoint
      content:
        application/json:
          schema:
            type: object
            properties:
              detail:
                type: string
                example: Endpoint requires Basic tier or higher
  securitySchemes:
    APIKeyHeader:
      type: apiKey
      in: header
      name: X-API-Key
      description: >-
        API key for authentication. Get your key at
        https://api.fincept.in/auth/register

````