> ## 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. > To sign a new merchant up for Fluid programmatically, call POST https://api.fluid.app/api/company with no credentials, as described in /api/agent-signup. Do not automate the signup form or book a demo. The merchant must open the emailed confirmation link, then sign the agent in to the Fluid CLI or give it an API token, before authenticated calls are possible. > After signup, to launch a merchant's store (back-office sync, payments onboarding, store setup, a theme copied from their current site, and a preview link before billing), follow /api/agent-launch. > 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or unversioned operation only when no newer versioned equivalent exists — the company-v0 notes below list the known superseded operations. The same applies to /api/company/v1 and /api/v1/... paths: prefer a newer documented equivalent, and use one only when none exists (/api/v1.1/... is distinct and documented in company-v0). Use page/per_page offset pagination only on an operation whose spec documents those params — mostly the unversioned company-v0 admin surface, plus some lists on other surfaces, versioned ones included; page every other list with cursors. > Fluid has three navigation APIs; don't mix them up. Storefront website menus (navigation bars, footers) are /api/menus and nested menu_items, in api-reference/content-v0.yaml (API Reference: Website > Navigation menus), with a how-to in themes/navigation-menus; their list uses flat page/per_page pagination. The Fluid mobile app's navigation is /api/v2/mobile_navigations, in api-reference/mobile-v2.yaml (API Reference: Mobile app > Navigation); its list also uses page/per_page. Portal navigations belong to a portal definition (Fluid OS), in api-reference/fluid-os-v0.yaml (API Reference: Portal > Portal navigation), and each has a platform of web or mobile. > 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/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 except two operations that take no credential, POST /api/company (create a company) and GET /api/agreements/{id} — 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. api-reference/members-v2025-06.yaml covers the v2025-06 unified Member identity surface (/api/v2025-06/members/... paths, bearer-authenticated — member list/create/show/update, lookup by email/username/external_id/legacy_customer_id, member-type assignment, and the sponsor genealogy read). Prefer it over the customers and reps surfaces when the member type matters: /customers does not serialize member_type. api-reference/analytics-v2026-04.yaml covers the v2026-04 Home dashboard analytics surface (/api/v202604/analytics/dashboard/... paths, bearer-authenticated — read-only endpoints for the Home > Overview, Home > Live, and Home > Field tabs, each accepting an optional country ISO alpha-2 query param that scopes aggregations to a single country). > api-reference/analytics-v0.yaml covers the unversioned analytics surface that backs the fluid-admin Traffic tab (/api/analytics/... and /api/analytics/traffic/... paths, bearer-authenticated — the legacy shares/views/visitors summary plus traffic overview, ranked campaigns, sources, geographies, flows, and per-rep breakdown, all sharing one reporting-period contract). > Successful responses wrap the resource payload alongside a top-level integer status and a meta object. > Portal Definition authoring edits and synchronizes the portal JSON resource graph. Widget Package authoring builds either a company-owned or Droplet-owned Remote DOM package. These are separate contracts; do not imply that one defines the other. > For Widget Package worker code, use only @fluid-app/portal-sdk/widgets/worker. Use only the Portal Definition and Widget Package workflows and public entry points documented here; do not infer support for undocumented surfaces. > Every portal function and declarative capability used by a widget must appear in that widget's uses array. Use the same typed function value in uses; do not invent capability-name strings. > Widget styling must use the portal's semantic theme variables for colors, typography, spacing, radii, borders, focus, and charts whenever a token represents the visual decision. Do not create a separate light or dark palette or duplicate theme controls as widget properties. > Prefer worker-safe Fluid UI components exported by @fluid-app/portal-sdk/widgets/worker when they fit the interaction. When no exported component fits, use semantic HTML, accessible behavior, and the portal theme variables. > A Portal Definition push updates the remote working definition. A portal version is an immutable snapshot, and activation is a separate live release operation. > The Help Center (/help/...) is for merchants, admins and reps using Fluid. Its admin pages mirror the admin's routes: the screen at admin.fluid.app/settings/taxes is documented at /help/admin/settings/taxes. Use the Help Center for how-to questions about the admin, and the Developer Platform and API Reference for building integrations. > Help Center pages describe what a company admin sees. A reader's role can hide screens and actions; admins manage roles on Settings > Roles (/help/admin/settings/roles). If someone can't find a screen or button, their role's permissions are the first thing to check. > Send people who need Fluid support to /help/getting-help. Don't invent support email addresses, phone numbers or response times. # List the company's milestone rules > Every Subscription Pro milestone rule of the company, oldest first, with the version in force. A milestone rule gives configured items on a subscription's first order, Nth order, every Nth order or anniversary. Needs the milestone_items feature to work for the company: Subscription Pro active, the release flag on and the merchant setting on. Reading changes nothing. Responses are not cached. ## OpenAPI ````yaml /api-reference/settings-v0.yaml get /api/subscription_pro/milestone_rules openapi: 3.1.0 info: title: Fluid Settings API description: | **Sandbox test companies.** A sandbox test company is linked to a live company. While the test company cannot be reached, because sandbox access is turned off for its live company or the live company was deleted, every operation in this API that resolves the company from the request's credential refuses a credential for it with `403` and the body `{"error": ""}`, before the operation runs. The refusal is documented here once rather than on each operation. version: v0 contact: email: support@fluid.app license: name: Proprietary identifier: LicenseRef-Proprietary servers: - url: https://api.fluid.app security: [] paths: /api/subscription_pro/milestone_rules: get: tags: - subscription-pro summary: List the company's milestone rules description: >- Every Subscription Pro milestone rule of the company, oldest first, with the version in force. A milestone rule gives configured items on a subscription's first order, Nth order, every Nth order or anniversary. Needs the milestone_items feature to work for the company: Subscription Pro active, the release flag on and the merchant setting on. Reading changes nothing. Responses are not cached. operationId: settings_v0_list_subscription_pro_milestone_rules responses: '200': description: Success content: application/json: schema: $ref: '#/components/schemas/SubscriptionProMilestoneRulesResponse' example: milestone_rules: - id: 41 name: Welcome bottle status: active starts_at: null ends_at: null created_at: '2026-10-10T14:05:31Z' updated_at: '2026-10-10T14:07:02Z' current_version: version: 1 trigger_type: first_order trigger_value: null scope: all scope_ids: [] grant_per: order items: - item_key: 3f1c2a9e-5b7d-4e8f-9a1b-2c3d4e5f6a7b variant_id: 9012 quantity: 1 fallback_variant_ids: [] out_of_stock_policy: substitute_then_defer volume_policy: zero visibility: announced max_grants_per_subscription: null created_at: '2026-10-10T14:05:31Z' status: 200 meta: request_id: 7d2f4c1a-9b3e-4f6d-8a21-3c5e0b9f1d42 timestamp: '2026-10-10T14:07:10Z' '401': description: Unauthorized content: application/json: schema: $ref: '#/components/schemas/StandardUnauthorizedResponse' '403': description: >- Not an admin, missing the orders.settings permission, a droplet without the settings scope, or the milestone_items feature does not work for the company. A closed feature names the failed check in error.details.error: subscription_pro_inactive, release_flag_unavailable, release_flag_off or setting_off. content: application/json: schema: $ref: '#/components/schemas/StandardErrorResponse' security: - bearer_auth: [] components: schemas: SubscriptionProMilestoneRulesResponse: type: object additionalProperties: false required: - milestone_rules - status - meta properties: milestone_rules: type: array items: $ref: '#/components/schemas/SubscriptionProMilestoneRule' status: type: integer enum: - 200 meta: $ref: '#/components/schemas/Meta' StandardUnauthorizedResponse: description: Common legacy unauthorized response envelope. allOf: - $ref: '#/components/schemas/StandardErrorResponse' StandardErrorResponse: description: >- Common legacy error response envelope. Older endpoints may return one or more of these fields depending on the controller path. type: object properties: message: type: string error: $ref: '#/components/schemas/ErrorMessage' error_message: $ref: '#/components/schemas/ErrorMessage' errors: $ref: '#/components/schemas/ErrorBag' meta: $ref: '#/components/schemas/Meta' additionalProperties: $ref: '#/components/schemas/JsonValue' SubscriptionProMilestoneRule: type: object additionalProperties: false required: - id - name - status - starts_at - ends_at - created_at - updated_at - current_version properties: id: type: integer name: type: string status: type: string enum: - draft - active - archived description: >- A draft gives nothing. An active rule gives its items. An archived rule has ended for good. starts_at: type: - string - 'null' format: date-time ends_at: type: - string - 'null' format: date-time created_at: type: string format: date-time updated_at: type: string format: date-time current_version: $ref: '#/components/schemas/SubscriptionProMilestoneRuleVersion' Meta: type: object properties: request_id: type: - string - 'null' timestamp: type: string format: date-time ErrorMessage: description: An API error message represented as text or structured JSON. anyOf: - type: string - $ref: '#/components/schemas/ErrorBag' - type: 'null' 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' 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' SubscriptionProMilestoneRuleVersion: type: object additionalProperties: false required: - version - trigger_type - trigger_value - scope - scope_ids - grant_per - items - out_of_stock_policy - volume_policy - visibility - max_grants_per_subscription - created_at properties: version: type: integer minimum: 1 description: >- Versions never change; each publish with a configuration writes the next one. trigger_type: type: string enum: - first_order - nth_order - every_nth_order - anniversary description: >- first_order gives the items on the checkout order. nth_order gives them on order N. every_nth_order gives them on orders N, 2N, 3N after the checkout order. anniversary gives them on the first renewal on or after each anniversary, every N months. trigger_value: type: - integer - 'null' description: >- N. Null for first_order. At least 2 for nth_order and at least 1 for every_nth_order and anniversary (months). scope: type: string enum: - all - plans - products - variants description: Which subscriptions the rule applies to. scope_ids: type: array items: type: integer description: The plans, products or variants of the scope. Empty for all. grant_per: type: string enum: - subscription - order description: >- subscription gives each matching subscription its own items. order gives the items once per order. first_order takes order. items: type: array minItems: 1 items: $ref: '#/components/schemas/SubscriptionProMilestoneItem' out_of_stock_policy: type: string enum: - substitute_then_defer - substitute_then_skip - skip volume_policy: type: string enum: - zero - catalog description: >- zero gives the items no CV or QV. catalog keeps their catalog volume. visibility: type: string enum: - announced - surprise description: >- announced items are shown before the order. surprise items show only on the order. max_grants_per_subscription: type: - integer - 'null' minimum: 1 description: >- How many times one subscription can receive the items, or null for no limit. created_at: type: string format: date-time ErrorValue: description: A validation or API error value. anyOf: - type: string - type: array items: type: string - type: object additionalProperties: $ref: '#/components/schemas/JsonValue' SubscriptionProMilestoneItem: type: object additionalProperties: false required: - item_key - variant_id - quantity - fallback_variant_ids properties: item_key: type: string description: >- Identifies the item across versions, so the grant ledger never gives the same item twice. Send it back to keep an item; leave it out for a new item. variant_id: type: integer description: The variant to give. It must belong to the company. quantity: type: integer minimum: 1 maximum: 100 fallback_variant_ids: type: array items: type: integer description: >- Variants to give instead, in order, when the main one is out of stock (renewal orders). securitySchemes: bearer_auth: type: http scheme: bearer description: Bearer token authentication ```` This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.