> ## Documentation Index > Fetch the complete documentation index at: https://docs.fluid.app/llms.txt > Use this file to discover all available pages before exploring further. > ## Agent Instructions > For new direct REST integrations, use the v2026-04 surfaces. The @fluid-app FairShare SDK continues to use its own published public-v2025-06 contract. > Authenticate with the header Authorization: Bearer ; public storefront read endpoints require no auth. > Lists use cursor pagination via the page[cursor] and page[limit] query params; follow meta.pagination.next_cursor until it is null. > When the same operation exists on more than one surface, use the newest: dated API versions are newer than unversioned ones, and later dates win (v2026-04 > v2025-06 > unversioned v0/v1.1). Fall back to a legacy or unversioned operation only when no newer versioned equivalent exists — the company-v0 notes below list the known superseded operations. /api/company/v1 and /api/v1/... paths are documented in no spec here and must never be used (/api/v1.1/... is distinct and documented in company-v0). Use page/per_page offset pagination only where a spec documents it — in practice the unversioned company-v0 admin surface; every versioned surface uses cursor pagination. > The OpenAPI specs under api-reference/ are the authoritative contracts; prefer them over prose when in doubt. api-reference/storefront-v2026-04.yaml covers the v2026-04 storefront surface (/api/v202604/... paths); api-reference/auth-v0.yaml covers the unversioned auth surface (/api/... paths — authentication, MFA, social auth, and token exchange); api-reference/checkout-v2026-04.yaml covers the v2026-04 checkout surface (/api/checkout/v2026-04/... paths — carts, cart auth, discounts, items, subscriptions, orders, enrollments, and store config); api-reference/public-v2025-06.yaml covers the Public SDK surface used by the @fluid-app FairShare SDK, including its parallel cart lifecycle, browser integrations, versioned payment callbacks, unversioned public utilities, and the cart price-override operation; api-reference/payment-v2026-04.yaml covers the v2026-04 payment gateway admin surface (/api/payment/v2026-04/... paths, bearer-authenticated — gateway CRUD, gateway purchase/authorize/$0-verify, transaction list/show and capture/void/credit, and merchant payment configuration); api-reference/payments-v2026-04.yaml covers the v2026-04 cart payment surface (/api/payments/v2026-04/carts/{cart_token}/... paths, authenticated by the cart token in the path with no bearer — payment-method selection, VGS card tokenization, 3D Secure verification, and PayPal/Braintree/Klarna/Apple Pay flows); api-reference/commerce-v2026-04.yaml covers the v2026-04 commerce order-editing surface (/api/v202604/orders/{order_id}/edits paths, bearer-authenticated — post-checkout order edits that atomically insert items and add adjustments/discounts, with an optional dry-run preview); api-reference/webhooks-v0.yaml covers the unversioned webhooks surface (/api/... paths — webhook registration, delivery payloads, callback registrations, company events, and webhook/callback schemas); api-reference/company-v0.yaml covers the legacy unversioned company admin surface (/api/... paths, bearer-authenticated — company settings and management, customers, users, roles, subscription plans, subscription bundles, subscriptions, media, pages, catch-ups, inventory levels, domains, agreements, and admin order actions). company-v0 caveats: it is the legacy v0 admin contract and its lists use flat page/per_page offset pagination, which is expected there despite the general cursor-pagination rule; where an operation exists in both company-v0 and a versioned spec, prefer the versioned spec — the subscriptions lifecycle (list/create/show/update, cancel, pause, reactivate, resume, retry, skip, failed-cycle-waiver, discounts) and subscription bundles are superseded by checkout-v2026-04, and company pages/media CRUD plus the public pages, categories, products, and media list endpoints are superseded by storefront-v2026-04. Subscription plan management (/api/subscription_plans, resource-wrapped {"subscription_plan": {...}} bodies) exists only in company-v0. > Successful responses wrap the resource payload alongside a top-level integer status and a meta object. # Create a company payment provider ## OpenAPI ````yaml /api-reference/company-v0.yaml post /api/companies/{id}/payments_status openapi: 3.1.0 info: title: Fluid Company API version: v0 contact: email: support@fluid.app license: name: Proprietary identifier: LicenseRef-Proprietary servers: - url: https://api.fluid.app - url: https://{company}.fluid.app description: Production server with company subdomain variables: company: default: myco description: Company subdomain security: [] paths: /api/companies/{id}/payments_status: post: tags: - companies summary: Create a company payment provider operationId: commerce_v0_companies_payments_status_post parameters: - name: id in: path required: true schema: type: string responses: '201': description: Provider introduced content: application/json: schema: $ref: '#/components/schemas/CompanyPaymentProviderResponse' '401': description: Unauthorized content: application/json: schema: $ref: '#/components/schemas/UnauthorizedResponse' security: - bearer_auth: [] components: schemas: CompanyPaymentProviderResponse: type: object properties: meta: type: object properties: request_id: type: string timestamp: type: string format: date-time required: - request_id - timestamp additionalProperties: false provider: type: object properties: active: type: boolean adapter_class: type: string aggregator_name: type: string apple_pay_enabled: type: boolean brand_color: type: 'null' countries: type: array items: type: - object - 'null' properties: id: type: integer iso: type: string name: type: string status: type: string required: - id - iso - name - status additionalProperties: false description: type: 'null' display_name: type: string icon_url: type: string id: type: integer integration_class: type: string is_aggregator: type: boolean moto_only: type: boolean onboarding_status: type: string onboarding_time_estimate: type: 'null' payment_account_id: type: integer payment_account_name: type: string payment_account_uuid: type: string processing_fee: type: object properties: basis_points: type: integer fixed_cents: type: integer required: - basis_points - fixed_cents additionalProperties: false provider_type: type: string recurring_only: type: boolean sandbox: type: boolean success_rate: type: string test: type: boolean required: - active - adapter_class - aggregator_name - apple_pay_enabled - brand_color - countries - description - display_name - icon_url - id - integration_class - is_aggregator - moto_only - onboarding_status - onboarding_time_estimate - payment_account_id - payment_account_name - payment_account_uuid - processing_fee - provider_type - recurring_only - sandbox - success_rate - test additionalProperties: false required: - meta - provider additionalProperties: false UnauthorizedResponse: type: object properties: message: type: string required: - message securitySchemes: bearer_auth: type: http scheme: bearer description: Bearer token authentication ````