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

# Set a group counter

> Set a counter to an absolute value using replace (last-write-wins) semantics. To add to a counter atomically, use the increment endpoint.

Sets a counter value on a group directly. The counter is identified by its key in the URL path. If the counter does not exist, it is created. If it already exists, its value is overwritten with the provided amount.

This is an absolute set with last-write-wins semantics; to add to a counter atomically, use [increment counter](/api-reference/groups/increment-a-group-counter). You can optionally include `reset_after` (a duration string with `h`, `d`, or `w` units, like `"24h"` or `"30d"`) to configure auto-reset. Pass an empty string to clear an existing reset interval.

<Note>
  For usage patterns and examples, see the [State Management guide](/guides/state-management).
</Note>


## OpenAPI

````yaml PUT /v1/groups/{id}/state/counters/{key}
openapi: 3.0.3
info:
  contact:
    email: support@scrip.dev
    name: Scrip Support
    url: https://scrip.dev/support
  description: >-
    Universal Incentive Infrastructure API for managing loyalty programs,
    rewards, and participant balances.


    Scrip provides a complete backend for building incentive and loyalty
    programs. Core concepts:

    - **Programs**: Containers for incentive logic (e.g., "Q1 Sales Bonus",
    "Customer Loyalty")

    - **Assets**: The currency or points being tracked (e.g., "Bonus Points",
    "Cash Rewards")

    - **Participants**: Users who earn and spend assets (identified by
    external_id)

    - **Groups**: Collections of participants for team-based incentives

    - **Rules**: Automated reward logic triggered by events

    - **Events**: Actions that trigger rule evaluation (e.g., "purchase",
    "referral")


    Response formats:

    - **Collection endpoints** return: {"data": [...], "pagination":
    {"has_more": true, "next_cursor": "..."}}

    - **Single-resource endpoints** return the resource directly

    - **Errors** return: {"code": "...", "message": "...", "details": {...}} —
    `details` is an optional object, present on input errors only
  license:
    name: Proprietary
    url: https://scrip.dev/license
  termsOfService: https://scrip.dev/terms
  title: Scrip API
  version: '1.0'
servers:
  - url: https://api.scrip.dev
security: []
tags:
  - description: >-
      Manage incentive programs. Programs are the top-level container for all
      incentive logic.
    name: Programs
  - description: >-
      Manage asset types (currencies, points). Assets define what participants
      can earn and spend.
    name: Assets
  - description: >-
      Manage participants and their balances. Participants are identified by
      external_id from your system.
    name: Participants
  - description: Manage participant groups for team-based incentives.
    name: Groups
  - description: >-
      Manage automated reward rules. Rules define conditions and actions
      triggered by events.
    name: Rules
  - description: Ingest events that trigger rule evaluation and reward distribution.
    name: Events
  - description: Transfer assets between participants.
    name: Transfers
  - description: Access ledger summaries and program activity reports.
    name: Reporting
  - description: >-
      Redeem participant balances for rewards. Supports raw amount redemptions
      and catalog item redemptions.
    name: Redemptions
  - description: >-
      Manage the reward catalog. Create and manage redeemable items with
      inventory tracking.
    name: Rewards
  - description: >-
      Schedule and manage automated event dispatching. Automations generate
      events on cron schedules, at specific times, or by evaluating participant
      state.
    name: Automations
  - description: >-
      Manage tier types and levels within programs. Tiers define status
      hierarchies that participants progress through based on qualification
      rules.
    name: Tiers
  - description: Inspect double-entry ledger records for auditing and reconciliation.
    name: Journal Entries
  - description: >-
      Manage webhook endpoints and delivery logs. Webhooks notify your
      application of real-time events via HTTP POST with HMAC-SHA256 signatures.
    name: Webhooks
paths:
  /v1/groups/{id}/state/counters/{key}:
    put:
      tags:
        - Groups
      summary: Set a group counter
      description: >-
        Set a counter to an absolute value using replace (last-write-wins)
        semantics. To add to a counter atomically, use the increment endpoint.
      operationId: setGroupCounter
      parameters:
        - description: Group ID
          in: path
          name: id
          required: true
          schema:
            format: uuid
            type: string
        - description: Counter key
          in: path
          name: key
          required: true
          schema:
            type: string
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/handlers.SetCounterRequest'
        description: Counter value and optional reset_after
        required: true
        x-originalParamName: request
      responses:
        '200':
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/handlers.CounterResponse'
          description: Counter set
        '400':
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/handlers.ErrBadRequestResponse'
          description: 'Invalid parameters (code: bad_request)'
        '401':
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/handlers.ErrUnauthorizedResponse'
          description: 'Missing or invalid credentials (code: unauthorized)'
        '404':
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/handlers.ErrNotFoundResponse'
          description: 'Group not found (code: not_found)'
        '415':
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/handlers.ErrUnsupportedMediaTypeResponse'
          description: 'Content-Type must be application/json (code: unsupported_media_type)'
        '500':
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/handlers.ErrInternalResponse'
          description: 'Internal server error (code: internal_error)'
      security:
        - ApiKeyAuth: []
        - BearerAuth: []
components:
  schemas:
    handlers.SetCounterRequest:
      additionalProperties: false
      properties:
        reset_after:
          description: >-
            Auto-reset duration (e.g. "24h", "720h"). Empty string removes
            auto-reset. Omit to leave unchanged
          example: 720h
          type: string
        value:
          description: Counter value as a string for precision
          example: '42'
          minLength: 1
          type: string
      required:
        - value
      type: object
    handlers.CounterResponse:
      properties:
        key:
          description: Counter key
          example: purchases
          type: string
        last_reset_at:
          description: When the counter was last reset
          example: '2024-01-15T10:30:00Z'
          format: date-time
          type: string
        reset_after:
          description: Auto-reset duration, if configured
          example: 720h
          type: string
        value:
          description: Counter value as a string for precision
          example: '42'
          type: string
      type: object
    handlers.ErrBadRequestResponse:
      additionalProperties: false
      properties:
        code:
          description: Code is the machine-readable error code
          example: bad_request
          type: string
        details:
          allOf:
            - $ref: '#/components/schemas/handlers.ErrorDetails'
          description: >-
            Details provides optional structured error context (field errors,
            etc.)
        message:
          description: Message is the human-readable error description
          example: Invalid request parameters
          type: string
      type: object
    handlers.ErrUnauthorizedResponse:
      properties:
        code:
          description: Code is the machine-readable error code
          example: unauthorized
          type: string
        details:
          allOf:
            - $ref: '#/components/schemas/handlers.ErrorDetails'
          description: Details provides optional structured error context
        message:
          description: Message is the human-readable error description
          example: Missing or invalid credentials
          type: string
      type: object
    handlers.ErrNotFoundResponse:
      properties:
        code:
          description: Code is the machine-readable error code
          example: not_found
          type: string
        details:
          allOf:
            - $ref: '#/components/schemas/handlers.ErrorDetails'
          description: Details provides optional structured error context
        message:
          description: Message is the human-readable error description
          example: Resource not found
          type: string
      type: object
    handlers.ErrUnsupportedMediaTypeResponse:
      properties:
        code:
          description: Code is the machine-readable error code
          example: unsupported_media_type
          type: string
        details:
          allOf:
            - $ref: '#/components/schemas/handlers.ErrorDetails'
          description: Details provides optional structured error context
        message:
          description: Message is the human-readable error description
          example: Content-Type must be application/json
          type: string
      type: object
    handlers.ErrInternalResponse:
      properties:
        code:
          description: Code is the machine-readable error code
          example: internal_error
          type: string
        message:
          description: Message is the human-readable error description
          example: An internal error occurred
          type: string
      type: object
    handlers.ErrorDetails:
      description: >-
        Optional structured details about the error. Always a JSON object: a
        `fields` array for validation errors, or flat
        field/reason/expected/received properties for other input errors.
      properties:
        expected:
          description: Expected value or format (non-validation input errors)
          example: uuid
          type: string
        field:
          description: Field name that caused the error (non-validation input errors)
          example: asset_id
          type: string
        fields:
          description: >-
            Fields lists each offending input field on validation_error
            responses.
          items:
            $ref: '#/components/schemas/handlers.ErrorFieldDetail'
          type: array
        reason:
          description: Machine-readable reason code (non-validation input errors)
          example: invalid
          type: string
        received:
          description: Value that was received (non-validation input errors)
          example: not-a-uuid
          type: string
      type: object
    handlers.ErrorFieldDetail:
      description: >-
        A single field-level error: which input field failed, why, and (where
        known) the expected and received values.
      properties:
        expected:
          description: >-
            Expected value or format. Usually a string; for "one of" constraints
            it

            is an array of the allowed values.
        field:
          description: Field name that caused the error
          example: amount
          type: string
        message:
          description: Human-readable explanation (validation errors only)
          example: This field is required
          type: string
        reason:
          description: Machine-readable reason code
          example: required
          type: string
        received:
          description: Value that was received
          example: '-10.00'
          type: string
      type: object
  securitySchemes:
    ApiKeyAuth:
      description: API key passed in the X-API-Key header.
      in: header
      name: X-API-Key
      type: apiKey
    BearerAuth:
      description: Bearer token passed in the Authorization header (e.g. "Bearer sk_...").
      in: header
      name: Authorization
      type: apiKey

````