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

# Update a feature

> Update an existing feature definition by its unique ID.



## OpenAPI

````yaml /openapi.yaml put /features/{id}
openapi: 3.0.3
info:
  title: ArcenPay API
  description: >
    The ArcenPay REST API powers subscription billing, entitlements, usage
    metering,

    payment links, checkout sessions, and autonomous agent payments across EVM
    (BOT Chain,

    Base, Arc, Sepolia) and Stellar.


    Every endpoint that accepts an API key supports the `Authorization: Bearer
    <key>` header.

    Key prefixes: `sk_…` (secret), `rk_…` (restricted), `pk_…` (publishable,
    read-only),

    `api_…` (legacy). Company-scoped customer endpoints accept an embed access
    token

    (`arc_tok_…` or a signed JWT from `identify()`). See the Authentication page
    for the

    full endpoint auth matrix.


    Manage catalog, environments, invoices, webhooks, feature flags, and agent
    configuration

    from the *dashboard* — those are not part of the developer-facing API
    reference.
  version: 1.0.0
servers:
  - url: https://api.arcenpay.com/api/v1
    description: Production
  - url: http://localhost:3300/api/v1
    description: Local development
security:
  - bearerAuth: []
tags:
  - name: Credentials
    description: >-
      API keys, secret/publishable/restricted credentials, and short-lived
      tokens.
  - name: Companies
    description: Customer organizations, identity synchronization, and feature overrides.
  - name: Users
    description: Customer end-users associated with company organizations.
  - name: Events
    description: Ingest customer usage events and identification signals.
  - name: Access control
    description: >-
      Real-time entitlement checks, feature flags, and metered credit
      consumption.
  - name: Subscriptions
    description: >-
      On-chain subscription activation, self-serve plan switching, proration,
      and cancellation.
  - name: Checkout sessions
    description: Hosted checkout session lifecycle and status lookup.
  - name: Payment links
    description: Crypto payment links and dynamic payment URLs.
  - name: Autonomous agents
    description: >-
      Agent permissions, budget checking, on-chain funding, and auto-topup
      dispatch.
  - name: Mandates
    description: Recurring billing authorizations and mandate lifecycle.
  - name: Coupons
    description: Discount code validation and proration quoting.
  - name: zkTLS proofs
    description: Zero-knowledge TLS proofs verification via Reclaim Protocol.
  - name: Public
    description: Unauthenticated payment link specifications and checkout sessions.
  - name: Escrow
    description: >-
      Autonomous commit-reveal escrow reservations, release settlement, and
      dispute handling.
  - name: Features
    description: Feature catalog definitions, feature types, and linked plan entitlements.
paths:
  /features/{id}:
    put:
      tags:
        - Features
      summary: Update a feature
      description: Update an existing feature definition by its unique ID.
      parameters:
        - name: id
          in: path
          required: true
          schema:
            type: string
          description: Unique ID of the feature
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              properties:
                name:
                  type: string
                  example: Advanced Analytics Export
                description:
                  type: string
                  nullable: true
                  example: Export reporting data to CSV, PDF, and Parquet
                featureType:
                  type: string
                  enum:
                    - boolean
                    - event
                    - trait
                  example: boolean
                eventKey:
                  type: string
                  nullable: true
                icon:
                  type: string
                  nullable: true
      responses:
        '200':
          description: Feature updated successfully
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Feature'
        '400':
          $ref: '#/components/responses/BadRequest'
        '404':
          $ref: '#/components/responses/NotFound'
      security:
        - bearerAuth: []
components:
  schemas:
    Feature:
      type: object
      properties:
        id:
          type: string
          example: cflag_01h9zabc123
        name:
          type: string
          example: Analytics Export
        featureKey:
          type: string
          example: analytics_export
        featureType:
          type: string
          enum:
            - boolean
            - event
            - trait
          example: boolean
        eventKey:
          type: string
          nullable: true
          example: export_generated
        icon:
          type: string
          nullable: true
          example: bar-chart-2
        description:
          type: string
          nullable: true
          example: Ability to export reporting data to CSV and PDF
        linkedPlans:
          type: array
          items:
            type: object
            properties:
              id:
                type: string
              name:
                type: string
              tier:
                type: string
        createdAt:
          type: string
          format: date-time
  responses:
    BadRequest:
      description: Malformed request body or missing parameters.
      content:
        application/json:
          schema:
            type: object
            properties:
              error:
                type: string
              details:
                type: object
    NotFound:
      description: The requested resource does not exist.
      content:
        application/json:
          schema:
            type: object
            properties:
              error:
                type: string
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer
      bearerFormat: sk_… / rk_… / pk_… / api_…

````