> This page is for Cash App Pay Partner API.

> For clean Markdown of any page, append .md to the page URL.
> For a complete documentation index, see https://developers.cash.app/llms.txt.
> For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://developers.cash.app/_mcp/server.

### Schema (`response.body`)

```yaml
openapi: 3.1.0
info:
  title: API
  version: 1.0.0
paths:
  /idempotency-key-schema-test:
    get:
      operationId: subpackageSchemas_get-idempotency-key-schema-test
      summary: Get IdempotencyKey Schema Test
      description: Hidden endpoint to document IdempotencyKey schema structure.
      tags:
        - subpackage_schemas
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                $ref: >-
                  #/components/schemas/schemas_GetIdempotencyKeySchemaTestSchemasResponse
tags:
  - name: subpackage_schemas
servers:
  - url: https://api.cash.app/network/v1
    description: Production
  - url: https://sandbox.api.cash.app/network/v1
    description: Sandbox
components:
  schemas:
    IdempotencyKey:
      type: string
      minLength: 1
      maxLength: 64
      description: >-
        A unique identifier which can be used by Cash App to de-duplicate
        retries of this request, making it idempotent. For more information, see
        [Idempotency](/cash-app-pay-partner-api/guides/technical-guides/api-fundamentals/idempotency).
      title: IdempotencyKey
    schemas_GetIdempotencyKeySchemaTestSchemasResponse:
      type: object
      properties:
        idempotency_key:
          $ref: '#/components/schemas/IdempotencyKey'
      required:
        - idempotency_key
      title: GetIdempotencyKeySchemaTestSchemasResponse

```

**`Example`**

```json Example
e345c3fb-1caa-46fd-b0d3-aa6c7b00ab19
```