overlay: 1.0.0 info: title: API Evangelist enhancements for Mailchimp Marketing API version: 1.0.0 x-generated: '2026-06-20' x-method: generated extends: openapi/mailchimp-marketing-api-openapi.yml actions: - target: $.info update: x-apievangelist-provider: mailchimp x-apievangelist-api: mailchimp:mailchimp-marketing-api x-apievangelist-artifacts: authentication: authentication/mailchimp-authentication.yml errors: errors/mailchimp-problem-types.yml conventions: conventions/mailchimp-conventions.yml lifecycle: lifecycle/mailchimp-lifecycle.yml data-model: data-model/mailchimp-data-model.yml rate-limits: rate-limits/mailchimp-rate-limits.yml x-apievangelist-agentic-access: agentic-access/mailchimp-agentic-access.yml - target: $.info update: x-mailchimp-datacenter-note: >- The in the host (e.g. us19) is the datacenter suffix of your API key (the part after the dash) or the dc field from the OAuth metadata endpoint. Replace the openapi server host accordingly.