Polar meters API

openapi: 3.0.1
info:
  title: Polar benefits meters API
  description: Polar is an open-source Merchant of Record (MoR) and monetization platform for developers. This document models the core organization-facing REST surface of the Polar API - products and prices, checkouts, customers, subscriptions, orders, benefits and license keys, usage meters and events, and webhooks. All requests are authenticated with a Bearer Organization Access Token. The canonical, machine-generated specification is published by Polar at https://api.polar.sh/openapi.json; this is a curated subset for the API Evangelist catalog.
  termsOfService: https://polar.sh/legal/terms
  contact:
    name: Polar Support
    email: support@polar.sh
    url: https://polar.sh/docs
  license:
    name: Apache-2.0
    url: https://github.com/polarsource/polar/blob/main/LICENSE
  version: 2026-04
servers:
- url: https://api.polar.sh/v1
  description: Production environment
- url: https://sandbox-api.polar.sh/v1
  description: Sandbox environment
security:
- oat: []
tags:
- name: meters
  description: Usage meters aggregating ingested events.
paths:
  /meters/:
    get:
      operationId: meters:list
      tags:
      - meters
      summary: List Meters
      responses:
        '200':
          description: A paginated list of meters.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ListResourceMeter'
    post:
      operationId: meters:create
      tags:
      - meters
      summary: Create Meter
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/MeterCreate'
      responses:
        '201':
          description: The created meter.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Meter'
  /meters/{id}:
    get:
      operationId: meters:get
      tags:
      - meters
      summary: Get Meter
      parameters:
      - $ref: '#/components/parameters/IdPath'
      responses:
        '200':
          description: The requested meter.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Meter'
components:
  schemas:
    ListResourceMeter:
      type: object
      properties:
        items:
          type: array
          items:
            $ref: '#/components/schemas/Meter'
        pagination:
          $ref: '#/components/schemas/Pagination'
    Meter:
      type: object
      properties:
        id:
          type: string
          format: uuid
        created_at:
          type: string
          format: date-time
        name:
          type: string
        aggregation:
          type: object
          additionalProperties: true
          description: How matching events are aggregated (e.g. count or sum over a property).
        filter:
          type: object
          additionalProperties: true
          description: Clauses selecting which events this meter counts.
        organization_id:
          type: string
          format: uuid
    MeterCreate:
      type: object
      required:
      - name
      - filter
      - aggregation
      properties:
        name:
          type: string
        filter:
          type: object
          additionalProperties: true
        aggregation:
          type: object
          additionalProperties: true
    Pagination:
      type: object
      properties:
        total_count:
          type: integer
        max_page:
          type: integer
  parameters:
    IdPath:
      name: id
      in: path
      required: true
      schema:
        type: string
        format: uuid
  securitySchemes:
    oat:
      type: http
      scheme: bearer
      description: Organization Access Token used for backend, organization-scoped operations.
    pat:
      type: http
      scheme: bearer
      description: Personal Access Token scoped to a user.
    customer_session:
      type: http
      scheme: bearer
      description: Customer Session token used for customer portal endpoints.