tools:
  - name: send-email
    description: Send an email using Resend
    inputSchema:
      type: object
      $schema: http://json-schema.org/draft-07/schema#
      required:
        - to
        - subject
        - content
      properties:
        to:
          type: string
          format: email
          description: Recipient email address
        content:
          type: string
          description: Plain text email content
        subject:
          type: string
          description: Email subject line
      additionalProperties: false