> ## 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. > Never use /api/company/v1 or /api/v1 paths, page/per_page params, or offset pagination — they are legacy. > 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). > Successful responses wrap the resource payload alongside a top-level integer status and a meta object. # Get merchant payment configuration > Root-admin-only. Returns VGS, Kount, 3DS acquirer, payout, and platform-fee settings for a merchant. Secret fields are obfuscated. ## OpenAPI ````yaml /api-reference/payment-v2026-04.yaml get /api/payment/v2026-04/merchants/{merchant_id}/configuration openapi: 3.1.0 info: title: Fluid Payment API version: v2026-04 description: >- Payment gateway and transaction management API. Supports API key authentication (fp_live_*/fp_test_*) and JWT bearer tokens. contact: email: support@fluid.app license: name: Proprietary identifier: LicenseRef-Proprietary servers: - url: https://api.fluid.app security: - bearer_auth: [] tags: - name: Gateways description: >- Manage payment gateways and run gateway-level transactions — purchase, authorize, and $0 verification. - name: Transactions description: >- Read transactions and run transaction lifecycle operations — capture, void, and credit/refund. - name: Merchant Configuration description: >- Root-admin-only access to a merchant's VGS, Kount, 3DS acquirer, payout, and platform-fee settings. paths: /api/payment/v2026-04/merchants/{merchant_id}/configuration: parameters: - name: merchant_id in: path required: true schema: type: integer description: Merchant ID or company ID (both are unique-indexed) get: tags: - Merchant Configuration summary: Get merchant payment configuration description: >- Root-admin-only. Returns VGS, Kount, 3DS acquirer, payout, and platform-fee settings for a merchant. Secret fields are obfuscated. operationId: showMerchantConfiguration responses: '200': description: Merchant payment configuration content: application/json: schema: $ref: '#/components/schemas/MerchantConfigurationResponse' '401': $ref: '#/components/responses/Unauthorized' '403': $ref: '#/components/responses/Forbidden' '404': $ref: '#/components/responses/NotFound' components: schemas: MerchantConfigurationResponse: type: object required: - data - meta properties: data: $ref: '#/components/schemas/MerchantConfiguration' meta: $ref: '#/components/schemas/Meta' MerchantConfiguration: type: object properties: vgs_client_id: type: - string - 'null' description: VGS client ID vgs_client_secret: type: - string - 'null' description: VGS client secret (obfuscated on read) vgs_environment: type: - string - 'null' enum: - live - sandbox - null description: VGS environment kount_enterprise: type: - boolean - 'null' example: false description: >- When true, this merchant uses its own Kount 360 account; credentials come from kount_api_key + kount_webhook_signing_key. When false, Fluid's master Kount account is used (env-aware) and kount_channel_prefix segments traffic. kount_api_key: type: - string - 'null' description: Kount API key (obfuscated on read) kount_environment: type: - string - 'null' enum: - sandbox - production - null description: Kount environment kount_client_id: type: - string - 'null' example: '150953359757648' description: >- Per-merchant Kount Client ID (MID). Required when kount_enterprise is true; used by the Kount Web SDK on the checkout page so DDC data lands in this merchant's Kount tenant. Plain text — public-by-design. kount_channel_prefix: type: - string - 'null' maxLength: 63 description: >- Bare Kount channel prefix for the merchant (e.g. "yoli" or "rain-international"); appended to source tokens at runtime to form channel values like "yoli-WEB". Root-admin write only. kount_webhook_signing_key: type: - string - 'null' example: MG9h********Tg== description: >- Obfuscated RSA public key the merchant gets from their Kount 360 portal. Used to verify decision webhooks for enterprise accounts. Returned masked. kount_accounts: type: array description: >- Complete persisted Kount account set. Contains up to one sandbox account and one production account; kount_environment selects which account routes checkout traffic. items: $ref: '#/components/schemas/KountAccount' network_tokens_enabled: type: - boolean - 'null' description: Whether network tokens are enabled vgs_cmp_vault_id: type: - string - 'null' description: VGS CMP vault ID for cross-vault proxy vgs_proxy_username: type: - string - 'null' description: VGS proxy username vgs_proxy_password: type: - string - 'null' description: VGS proxy password (obfuscated on read) network_3ds_setting: type: object description: Per-network 3DS acquirer settings properties: visa_acquirer_bin: type: string visa_acquirer_merchant_id: type: string mastercard_acquirer_bin: type: string mastercard_acquirer_merchant_id: type: string amex_acquirer_bin: type: string amex_acquirer_merchant_id: type: string amex_acquirer_requestor_id: type: string amex_acquirer_requestor_name: type: string discover_acquirer_bin: type: string discover_acquirer_merchant_id: type: string discover_acquirer_requestor_id: type: string discover_acquirer_requestor_name: type: string payouts_settings: type: object description: Payout collection settings properties: payout_collection_enabled: type: boolean description: Whether automatic payout collection is enabled for the merchant. payout_collection_schedule: type: string enum: - hourly_4 - daily - weekly description: > Cadence at which payouts are collected: `hourly_4` (every 4 hours), `daily`, or `weekly`. minimum_payout_amount: type: number description: Minimum balance required before a payout is collected. last_payout_collection_at: type: string format: date-time description: Timestamp of the most recent payout collection (ISO 8601). platform_fee_rate: type: number description: Fluid platform fee rate (percentage) example: 2.9 platform_fee_fixed: type: number description: Fluid platform fee fixed amount (USD) example: 0.3 Meta: type: object required: - request_id - timestamp properties: request_id: type: - string - 'null' description: | Unique identifier for this request, echoed on every response for log correlation and support; `null` when none was assigned. timestamp: type: string format: date-time description: ISO 8601 timestamp (UTC) of when the response was generated. UnauthorizedResponse: type: object required: - message - meta properties: message: type: string description: Human-readable reason the credentials were rejected. status: type: string description: Error status string, when present. meta: $ref: '#/components/schemas/Meta' ForbiddenResponse: description: | Authenticated but not authorized. Two body shapes occur: - a bare `message` when the credential lacks the required role/tier (e.g. a non-admin JWT calling an admin endpoint) - a `status` + `message` envelope from payment API endpoint gates anyOf: - type: object required: - message - meta properties: message: type: string meta: $ref: '#/components/schemas/Meta' - type: object required: - status - message - meta properties: status: type: string enum: - error message: type: string meta: $ref: '#/components/schemas/Meta' ErrorResponse: oneOf: - type: object required: - status - message - meta properties: status: type: string enum: - error description: Always `error` for this envelope. message: type: string description: Human-readable description of what went wrong. meta: $ref: '#/components/schemas/Meta' - type: object required: - error_message - errors - meta properties: error_message: type: string description: Human-readable summary of the failure. errors: $ref: '#/components/schemas/ErrorBag' meta: $ref: '#/components/schemas/Meta' KountAccount: type: object description: >- One Kount account configuration. Sandbox and production are persisted as separate accounts; the active environment is mirrored by MerchantConfiguration.kount_environment. required: - environment - enterprise properties: environment: type: string enum: - sandbox - production description: Kount account environment. enterprise: type: boolean description: >- When true, this account uses merchant-owned Kount 360 credentials. When false, it uses Fluid's portfolio credentials with a channel prefix. channel_prefix: type: - string - 'null' maxLength: 63 description: Portfolio account channel prefix. Required when enterprise is false. api_key: type: - string - 'null' description: >- Enterprise Kount API key. Obfuscated on read; omit or send obfuscated value to preserve the stored secret. client_id: type: - string - 'null' example: '150953359757648' description: >- Enterprise Kount Client ID (MID). Plain text and public-by-design for the checkout DDC script. webhook_signing_key: type: - string - 'null' description: >- Enterprise webhook signing key. Obfuscated on read; omit or send obfuscated value to preserve the stored secret. ErrorBag: description: >- Validation errors keyed by field, a list of errors, a single error message, or null when no structured error details are available. anyOf: - type: string - type: array items: $ref: '#/components/schemas/ErrorValue' - type: object additionalProperties: $ref: '#/components/schemas/ErrorValue' - type: 'null' ErrorValue: description: A validation or API error value. anyOf: - type: string - type: array items: type: string - type: object additionalProperties: $ref: '#/components/schemas/JsonValue' JsonValue: description: >- Any valid JSON value for provider, integration, theme, metadata, or other dynamic payloads whose keys are not fixed by the API contract. anyOf: - type: string - type: number - type: boolean - type: 'null' - type: array items: $ref: '#/components/schemas/JsonValue' - type: object additionalProperties: $ref: '#/components/schemas/JsonValue' responses: Unauthorized: description: Missing or invalid credentials. content: application/json: schema: $ref: '#/components/schemas/UnauthorizedResponse' Forbidden: description: Authenticated but not authorized for this action. content: application/json: schema: $ref: '#/components/schemas/ForbiddenResponse' NotFound: description: The requested resource was not found. content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' securitySchemes: bearer_auth: type: http scheme: bearer description: API key (fp_live_*/fp_test_*) or JWT bearer token ````