openapi: 3.0.3
info:
  title: TestRail API (v2) Cases Milestones API
  description: 'TestRail is a web-based test case management and QA platform. This document models the TestRail HTTP API v2, which lets teams manage projects, suites, sections, test cases, test runs, test plans, individual tests, results, milestones, configurations, and users.


    TestRail runs on a per-customer instance: TestRail Cloud is hosted at https://{instance}.testrail.io (older Cloud instances use .testrail.com), and TestRail Server / Enterprise is self-hosted on your own host. There is no single shared public endpoint.


    URL style: every call is routed through TestRail''s `index.php` front controller, so the effective base is `https://{instance}.testrail.io/index.php?/api/v2` and a method looks like `GET /index.php?/api/v2/get_run/1`. The `?/api/v2/...` is a rewritten query string that TestRail treats as the API path. In this document the servers entry carries the `index.php?/api/v2` prefix and each path is the method name plus its id/parent segment.


    Authentication is HTTP Basic: the username is your TestRail email and the password is your account password or an API key generated under My Settings. The API must be enabled by an administrator under Administration > Site Settings > API. All payloads are JSON.


    Bulk GET endpoints (get_cases, get_runs, get_results, etc.) return up to 250 records per page and accept `limit` (1-250) and `offset` for pagination.'
  version: '2.0'
  contact:
    name: TestRail (IDERA)
    url: https://www.testrail.com
  x-transport-note: The real request URL embeds the API version in a query string via index.php, e.g. https://example.testrail.io/index.php?/api/v2/get_run/1 - this is intentional and specific to TestRail, not a normal REST path.
servers:
- url: https://{instance}.testrail.io/index.php?/api/v2
  description: TestRail Cloud (per-instance host; replace {instance} with your subdomain)
  variables:
    instance:
      default: example
      description: Your TestRail Cloud subdomain.
- url: https://{host}/index.php?/api/v2
  description: TestRail Server / Enterprise (self-hosted; replace {host} with your install host)
  variables:
    host:
      default: testrail.example.com
      description: Hostname of your self-hosted TestRail installation.
security:
- basicAuth: []
tags:
- name: Milestones
  description: Releases and deadlines that runs and plans report toward.
paths:
  /get_milestones/{project_id}:
    get:
      operationId: getMilestones
      tags:
      - Milestones
      summary: Get milestones
      description: Returns a list of milestones for a project.
      parameters:
      - $ref: '#/components/parameters/ProjectId'
      - $ref: '#/components/parameters/Limit'
      - $ref: '#/components/parameters/Offset'
      responses:
        '200':
          description: A list of milestones.
  /get_milestone/{milestone_id}:
    get:
      operationId: getMilestone
      tags:
      - Milestones
      summary: Get milestone
      description: Returns an existing milestone.
      parameters:
      - $ref: '#/components/parameters/MilestoneId'
      responses:
        '200':
          description: The requested milestone.
  /add_milestone/{project_id}:
    post:
      operationId: addMilestone
      tags:
      - Milestones
      summary: Add milestone
      description: Creates a new milestone in a project.
      parameters:
      - $ref: '#/components/parameters/ProjectId'
      requestBody:
        $ref: '#/components/requestBodies/GenericJson'
      responses:
        '200':
          description: The created milestone.
  /update_milestone/{milestone_id}:
    post:
      operationId: updateMilestone
      tags:
      - Milestones
      summary: Update milestone
      description: Updates an existing milestone (for example to mark it completed).
      parameters:
      - $ref: '#/components/parameters/MilestoneId'
      requestBody:
        $ref: '#/components/requestBodies/GenericJson'
      responses:
        '200':
          description: The updated milestone.
  /delete_milestone/{milestone_id}:
    post:
      operationId: deleteMilestone
      tags:
      - Milestones
      summary: Delete milestone
      description: Deletes an existing milestone.
      parameters:
      - $ref: '#/components/parameters/MilestoneId'
      responses:
        '200':
          description: Deletion confirmation.
components:
  parameters:
    Limit:
      name: limit
      in: query
      required: false
      description: Number of records to return (1-250; bulk endpoints default and cap at 250).
      schema:
        type: integer
        minimum: 1
        maximum: 250
        default: 250
    Offset:
      name: offset
      in: query
      required: false
      description: Number of records to skip for pagination on bulk endpoints.
      schema:
        type: integer
        minimum: 0
    ProjectId:
      name: project_id
      in: path
      required: true
      description: The ID of the project.
      schema:
        type: integer
    MilestoneId:
      name: milestone_id
      in: path
      required: true
      description: The ID of the milestone.
      schema:
        type: integer
  requestBodies:
    GenericJson:
      required: true
      description: JSON request body. Field names follow the TestRail API reference for the specific method (see the method's support.testrail.com article).
      content:
        application/json:
          schema:
            type: object
            additionalProperties: true
  securitySchemes:
    basicAuth:
      type: http
      scheme: basic
      description: HTTP Basic authentication. Username is your TestRail email; password is your account password or an API key generated under My Settings. The API must be enabled by an admin under Administration > Site Settings > API.