> ## Documentation Index > Fetch the complete documentation index at: https://api-docs.helpyousponsor.com/llms.txt > Use this file to discover all available pages before exploring further. # Restore a saved entity to checkout > Adds a previously selected entity back into the Redis-backed public checkout cart from query/body parameters. The endpoint validates the required ids, amount, frequency, and sponsorship amount, creates a replacement frontend session when the supplied one is expired, and stores the entity amount and default frequency in Redis. Public checkout uses this legacy route when restoring cart state. ## OpenAPI ````yaml get /frontend/save_entity openapi: 3.0.0 info: title: Gratona API description: >- REST API for the Gratona fundraising platform, including donor, donation, sponsorship, program, event, and integration workflows. Endpoints are organized by tag. Most endpoints require either a Passport bearer token or an issued API key — see the Security Schemes section. contact: name: Gratona Engineering url: https://gratona.com email: devs@gratona.com version: 1.0.0 servers: - url: https://api.gratona.com/v1 description: Server Version 1.0.0 security: [] tags: - name: Auth description: >- Login, signup, logout, password reset, and email verification for admin users and donors. - name: Donors description: >- Donor records: CRUD, profile fields, household linkage, search, filters, merge, and duplicate detection. - name: Donations description: >- Individual donation records, recurring commitments, soft credits, refunds, designations, and exports. - name: Sponsorships description: >- Donor-to-entity sponsorship relationships, lifecycle transitions, and sponsorship-specific filters. - name: Entities description: >- Recipient records (children, families, projects, animals, etc.), their status, and entity-level fields. - name: Programs description: >- Program / campaign configuration: hierarchy, settings, and program-level metadata. - name: Forms description: >- Custom form builder (HysForm), form fields, standardized donor fields, and field migrations. - name: Trips description: >- Mission-trip management: trips, participants, budgets, tasks, e-signatures, fundraising milestones, and background checks. - name: Communications description: >- Email templates, SMS, newsletters, donor email manager, and per-donor notes. - name: Payments description: >- Payment-gateway management (Stripe, PayPal, Flutterwave, QuickBooks). Excludes inbound webhooks — see the Webhooks tag. - name: Reports description: Dashboards, analytics, scheduled reports, and exports. - name: Admin description: >- Client-account administration: users, groups/permissions, settings, integrations, and account lifecycle. - name: Donor Portal description: >- Endpoints consumed by the donor-facing portal (donor login, dashboard, donation history, messages). - name: Recipient Portal description: Endpoints consumed by the recipient-facing portal. - name: Public description: >- Unauthenticated public endpoints: donor signup, public trip pages, peer-to-peer campaigns, public checkout. - name: Webhooks description: >- Inbound webhooks from third parties (Stripe, PayPal, Flutterwave, Checkr, DropboxSign). Annotated minimally for reference; payload shapes are owned by the upstream provider. - name: Client description: Client - name: Email Settings description: Email Settings - name: Admin Dashboard description: Admin Dashboard - name: Historical Archived Updates description: Historical Archived Updates - name: Team & access description: Team & access - name: Files description: Files - name: Wrapped description: Wrapped - name: Donor SignUp description: Donor SignUp - name: Frontend description: Frontend - name: User description: User paths: /frontend/save_entity: get: tags: - Public summary: Restore a saved entity to checkout description: >- Adds a previously selected entity back into the Redis-backed public checkout cart from query/body parameters. The endpoint validates the required ids, amount, frequency, and sponsorship amount, creates a replacement frontend session when the supplied one is expired, and stores the entity amount and default frequency in Redis. Public checkout uses this legacy route when restoring cart state. operationId: getSaveEntity parameters: - name: client_id in: query description: >- Client id that owns the checkout session and entity. Validator rule: `required`. required: true schema: type: integer example: 207 - name: program_id in: query description: 'Program id for the selected entity. Validator rule: `required`.' required: true schema: type: integer example: 11 - name: entity_id in: query description: >- Entity id to add back to `saved_entity_id` in Redis. Validator rule: `required`. required: true schema: type: integer example: 4711 - name: session_id in: query description: >- Redis frontend session id for the checkout cart. Validator rule: `required`; a replacement session is created if it is expired. required: true schema: type: string example: 7f2c8f8d64b8a1d4a9e2 - name: amount in: query description: >- Raw amount entered by the donor. Validator rule: `required`; the controller trims and strips non-numeric characters before storing it as `sponsorship_amount`. required: true schema: type: string example: $35.00 - name: frequency in: query description: >- Frequency value carried by the legacy route. Validator rule: `required`; used for the saved entity frequency and amount-policy selection. required: true schema: type: integer example: 1 - name: sponsorship_amount in: query description: >- Sponsorship amount to store in Redis when `amount` is empty. Validator rule: `required`. required: true schema: type: string example: '35.00' responses: '200': description: Entity was restored to the checkout cart. content: application/json: schema: properties: message: type: string example: >- Jane Student has been added back to your order! type: object '404': description: >- The client-owned recipient is unavailable or outside the allowed program scope. '422': description: Required query parameters were missing. content: application/json: schema: $ref: '#/components/schemas/ValidationErrorResponse' security: [] components: schemas: ValidationErrorResponse: title: ValidationErrorResponse description: >- Returned with HTTP 422 when `Validator::make($data, $rules)` fails. The `errors` map is keyed by the failing field name; each value is an array of human-readable error messages for that field. Most controllers also include a top-level `status: error`. required: - errors properties: errors: description: >- Map of field name to array of validator error messages. Example: `{email: [The email field is required.], amount: [The amount must be a number.]}`. type: object additionalProperties: type: array items: type: string status: description: Always the literal string `error`. type: string example: error message: description: >- Optional summary message — present on some endpoints, absent on others. type: string example: The given data was invalid. nullable: true type: object ```` This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.