> 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:
  /category-schema-test:
    get:
      operationId: subpackageSchemas_get-category-schema-test
      summary: Get Category Schema Test
      description: Hidden endpoint to document Category schema structure.
      tags:
        - subpackage_schemas
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                $ref: >-
                  #/components/schemas/schemas_GetCategorySchemaTestSchemasResponse
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:
    Category:
      type: string
      pattern: '[0-9]'
      minLength: 4
      maxLength: 4
      description: >-
        The merchant category code associated with the entity. Values are from
        the [ISO-18245 specification](https://www.iso.org/standard/33365.html).
      title: Category
    schemas_GetCategorySchemaTestSchemasResponse:
      type: object
      properties:
        category:
          $ref: '#/components/schemas/Category'
      required:
        - category
      title: GetCategorySchemaTestSchemasResponse

```

**`Example`**

```json Example
5432
```