generated: '2026-07-11' method: derived source: openapi/authorize-net-openapi.yml summary: types: - apiKey api_key_in: - header schemes: - name: merchantAuthentication type: apiKey in: header parameter: X-Anet-Merchant-Auth description: |- Authorize.Net does not use HTTP authentication. Instead, every request must include a `merchantAuthentication` object in the JSON/XML body containing the merchant's API Login ID (`name`) and `transactionKey`. This security scheme entry is a placeholder so OpenAPI tooling can model the requirement. sources: - openapi/authorize-net-openapi.yml