> ## Documentation Index
> Fetch the complete documentation index at: https://magicblock-42-dhruvja-docs-navigation-restructure.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Ensure Transfer Queue Crank

> After setup confirmation, verify that the validator-scoped transfer queue exists for a mint and force one crank attempt. Used to make sure queued private transfers make progress.



## OpenAPI

````yaml pages/ephemeral-spl-token/api-reference/openapi/transfer-queue-ensure-crank.openapi.json POST /v1/spl/transfer-queue/ensure-crank
openapi: 3.1.0
info:
  title: Private Payments API
  version: 0.1.0
  description: >-
    Verify the validator-scoped transfer queue for a mint and force one crank
    attempt.
servers:
  - url: https://payments.magicblock.app
    description: Mainnet - Private Payments API
security: []
paths:
  /v1/spl/transfer-queue/ensure-crank:
    post:
      summary: Ensure Transfer Queue Crank
      description: >-
        After setup confirmation, verify that the validator-scoped transfer
        queue exists for a mint and force one crank attempt. Used to make sure
        queued private transfers make progress.
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              properties:
                mint:
                  type: string
                  example: EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v
                cluster:
                  anyOf:
                    - type: string
                      enum:
                        - mainnet
                        - devnet
                    - type: string
                  example: mainnet
                  description: Optional. Cluster selector or custom http(s) RPC URL.
                validator:
                  type: string
                  example: MAS1Dt9qreoRMQ14YQuhg8UTZMMzDdKhmkZMECCzk57
                  description: >-
                    Optional. Defaults to the selected ephemeral RPC identity
                    resolved via `getIdentity`.
              required:
                - mint
              example:
                mint: EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v
                validator: MAS1Dt9qreoRMQ14YQuhg8UTZMMzDdKhmkZMECCzk57
      responses:
        '200':
          description: Forced transfer queue crank result
          content:
            application/json:
              schema:
                type: object
                properties:
                  mint:
                    type: string
                  validator:
                    type: string
                  transferQueue:
                    type: string
                  crankSignature:
                    type: string
                required:
                  - mint
                  - validator
                  - transferQueue
                  - crankSignature
        '400':
          description: Crank error
        '422':
          description: Validation error

````