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

> ## Agent Instructions
> Prefer the qBraid CLI for programmatic platform actions: pip install 'qbraid-cli>=0.12', then run `qbraid configure` once with an API key from https://account.qbraid.com/account/api-keys.
> When writing Python, prefer the qBraid SDK: `from qbraid.runtime import QbraidProvider` wraps devices, job submission (`device.run()`), and batch groups (`GroupJobSession`).
> Always install the latest packages (pip install -U qbraid qbraid-cli); do not pin versions from memory. qbraid-cli below 0.12.0 is incompatible with the current API.
> Device IDs use the QRN format vendor:provider:type:name (e.g. qbraid:qbraid:sim:qir-sv, rigetti:rigetti:qpu:cepheus-1-108q). Legacy underscore IDs are deprecated.
> The REST API base URL is https://api-v2.qbraid.com/api/v1, authenticated with an X-API-Key header.
> For endpoints without a dedicated wrapper, use `QbraidSessionV1` from `qbraid_core` — an authenticated session (`.get()`/`.post()`) that sets the X-API-Key header. Full spec: https://docs.qbraid.com/openapi-v2.json
> Free simulators cost no credits; QPU and GPU jobs consume credits. Surface the estimated cost to the user before submitting a paid job.
> For account signup, API keys, credits, and end-to-end action recipes, see https://qbraid.com/llms.txt.

# Get Simulator Usage Series


## OpenAPI

````yaml get /usage/simulator/series
openapi: 3.1.0
info:
  title: qBraid Runtime API
  description: Public REST API for qBraid's quantum platform. Submit and manage quantum jobs, organize them into batch groups, and browse available devices and their calibration data. Authenticate every request with an API key (`X-API-KEY`).
  version: "2"
servers:
  - url: https://api-v2.qbraid.com/api/v1
    description: Live Server
security:
  - ApiKeyAuth: []
paths:
  /usage/simulator/series:
    get:
      tags:
        - Account
      operationId: getSimulatorUsageSeries
      summary: Get simulator usage time series
      description: Return per-day counts of COMPLETED jobs for a single simulator (usage-over-time), scoped to the caller.
      parameters:
        - name: deviceQrn
          in: query
          required: true
          schema:
            type: string
            minLength: 1
            maxLength: 200
          description: Simulator device QRN.
        - name: days
          in: query
          required: false
          schema:
            type: integer
            minimum: 0
            maximum: 365
            default: 30
          description: Look-back window in days; 0 = all time.
        - name: timezone
          in: query
          required: false
          schema:
            type: string
            maxLength: 50
          description: IANA timezone for day bucketing (default UTC).
      responses:
        "200":
          description: Success.
          content:
            application/json:
              schema:
                $ref: "#/components/schemas/SimulatorUsageSeriesResponse"
        "400":
          description: Invalid query params.
          content:
            application/json:
              schema:
                $ref: "#/components/schemas/ErrorResponse"
        "401":
          description: Authentication / org context required.
          content:
            application/json:
              schema:
                $ref: "#/components/schemas/ErrorResponse"
        "404":
          description: Organization user not found.
          content:
            application/json:
              schema:
                $ref: "#/components/schemas/ErrorResponse"
components:
  schemas:
    ErrorResponse:
      type: object
      required:
        - success
        - message
        - error
      description: Standard error envelope returned for 4xx/5xx responses.
      properties:
        success:
          type: boolean
          example: false
        message:
          type: string
          description: Human-readable error message.
        error:
          type: object
          required:
            - message
            - code
          properties:
            message:
              type: string
            code:
              description: Machine-readable error code (string) or HTTP status (integer).
              oneOf:
                - type: string
                - type: integer
          additionalProperties: true
    SimulatorUsageSeriesResponse:
      type: object
      required:
        - success
        - data
      properties:
        success:
          type: boolean
          example: true
        data:
          type: array
          items:
            type: object
            required:
              - date
              - jobs
            properties:
              date:
                type: string
                description: YYYY-MM-DD.
              jobs:
                type: integer
  securitySchemes:
    ApiKeyAuth:
      type: apiKey
      in: header
      name: X-API-KEY
      description: Authenticate requests using an API key linked to your qBraid account. Obtain your key by registering or logging in at [account.qbraid.com](https://account.qbraid.com).
````