openapi: 3.0.3
info:
  title: TestRail API (v2) Cases Projects 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: Projects
  description: Top-level containers owning suites, cases, runs, plans, and milestones.
paths:
  /get_projects:
    get:
      operationId: getProjects
      tags:
      - Projects
      summary: Get projects
      description: Returns the list of available projects.
      parameters:
      - $ref: '#/components/parameters/Limit'
      - $ref: '#/components/parameters/Offset'
      responses:
        '200':
          description: A list of projects.
        '401':
          $ref: '#/components/responses/Unauthorized'
  /get_project/{project_id}:
    get:
      operationId: getProject
      tags:
      - Projects
      summary: Get project
      description: Returns an existing project by ID.
      parameters:
      - $ref: '#/components/parameters/ProjectId'
      responses:
        '200':
          description: The requested project.
        '400':
          $ref: '#/components/responses/BadRequest'
  /add_project:
    post:
      operationId: addProject
      tags:
      - Projects
      summary: Add project
      description: Creates a new project (admin status required).
      requestBody:
        $ref: '#/components/requestBodies/GenericJson'
      responses:
        '200':
          description: The created project.
        '403':
          $ref: '#/components/responses/Forbidden'
  /update_project/{project_id}:
    post:
      operationId: updateProject
      tags:
      - Projects
      summary: Update project
      description: Updates an existing project.
      parameters:
      - $ref: '#/components/parameters/ProjectId'
      requestBody:
        $ref: '#/components/requestBodies/GenericJson'
      responses:
        '200':
          description: The updated project.
  /delete_project/{project_id}:
    post:
      operationId: deleteProject
      tags:
      - Projects
      summary: Delete project
      description: Deletes an existing project. This cannot be undone.
      parameters:
      - $ref: '#/components/parameters/ProjectId'
      responses:
        '200':
          description: Deletion confirmation.
components:
  responses:
    Forbidden:
      description: Authenticated user lacks permission (for example not an administrator).
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
    Unauthorized:
      description: Missing or invalid credentials (HTTP Basic).
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
    BadRequest:
      description: Invalid or unknown identifier or parameters.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
  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
  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
  schemas:
    Error:
      type: object
      properties:
        error:
          type: string
          description: Human-readable error message returned by TestRail.
  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.