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

# List meters

> List all meters for the authenticated merchant. Meters define fee models for API request billing.



## OpenAPI

````yaml /openapi.json get /meters
openapi: 3.0.0
info:
  title: Lava API
  description: >-
    Lava API enables businesses to implement usage-based billing for AI
    services. This API allows tracking, managing, and billing for third-party AI
    API usage through a forwarding system.
  version: 1.0.0
  contact:
    name: Lava support
    url: https://www.lava.so/contact
servers:
  - url: https://api.lava.so/v1/
    description: Lava API v1
security: []
tags:
  - name: Authentication
  - name: Core Endpoints
  - name: Models
  - name: Services
  - name: Requests
  - name: Wallet
  - name: Payment Methods
  - name: Spend Keys
  - name: Usage
  - name: Checkout Sessions
  - name: Customers
  - name: Plans
  - name: Subscriptions
  - name: Meters
  - name: Webhooks
  - name: Secret Keys
  - name: Credit Bundles
  - name: Gateway Settings
  - name: Skills
  - name: News Data
  - name: Search
  - name: Enrich
paths:
  /meters:
    get:
      tags:
        - Meters
      summary: List meters
      description: >-
        List all meters for the authenticated merchant. Meters define fee models
        for API request billing.
      parameters:
        - name: cursor
          in: query
          schema:
            type: string
          description: Pagination cursor from a previous response
        - name: limit
          in: query
          schema:
            type: integer
            default: 10
            minimum: 1
            maximum: 100
          description: Maximum number of results to return (1-100)
      responses:
        '200':
          description: List of meters
          content:
            application/json:
              schema:
                type: object
                properties:
                  data:
                    type: array
                    items:
                      $ref: '#/components/schemas/Meter'
                  has_more:
                    type: boolean
                  next_cursor:
                    type: string
        '401':
          description: Unauthorized
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
      security:
        - Auth: []
components:
  schemas:
    Meter:
      type: object
      properties:
        meter_id:
          type: string
          description: Unique identifier for the meter
        meter_slug:
          type: string
          description: Slug identifier for the meter used in forward token authentication
        name:
          type: string
          description: Display name of the meter
        rate_type:
          type: string
          enum:
            - fixed
            - percentage
          description: >-
            Fee model: 'fixed' (credits per usage unit) or 'percentage'
            (percentage of provider base cost)
        tiers:
          type: array
          items:
            type: object
            properties:
              start:
                type: integer
                description: Start of this tier in the specified unit type
              rate:
                type: string
                description: >-
                  For rate_type fixed: credits per usage unit (high precision
                  decimal string). For rate_type percentage: percentage of
                  provider base cost (e.g. 120 for 120%).
              type:
                type: string
                enum:
                  - tokens_1m
                  - characters_1m
                  - minutes
                  - requests
                description: Unit type for this tier
            required:
              - start
              - rate
              - type
          description: Pricing tiers for the meter
        created_at:
          type: string
          format: date-time
          description: When the meter was created
      required:
        - meter_id
        - meter_slug
        - name
        - rate_type
        - tiers
        - created_at
    Error:
      type: object
      properties:
        error:
          type: object
          properties:
            message:
              type: string
              description: Human-readable error message describing what went wrong
              example: Invalid authentication credentials
            code:
              type: string
              description: Machine-readable error code describing what went wrong
              example: forward_token_json_invalid
            status:
              type: integer
              description: HTTP status code of the error
              example: 400
            issues:
              type: array
              items:
                type: object
                properties:
                  path:
                    type: array
                    items:
                      type: string
                    description: Path to the field that caused the validation error
                  message:
                    type: string
                    description: Error message describing the validation issue
                required:
                  - path
                  - message
              description: >-
                Optional array of specific validation issues with their paths
                and messages
              example:
                - path:
                    - model
                  message: 'Missing required field: model'
                - path:
                    - messages
                    - '0'
                    - content
                  message: Invalid message content format
          required:
            - message
            - code
            - status
      required:
        - error
  securitySchemes:
    Auth:
      type: http
      scheme: bearer
      description: >-
        Bearer token authentication used for standard API calls. Format: 'Bearer
        YOUR_API_KEY'

````