> ## 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. # Mark a participant task as complete > Records a `TripTaskCompletion` for the authenticated participant. If the task `requires_approval`, the row is saved with `status=completed` (pending leader review); otherwise it auto-promotes to `status=approved`. Tasks gated by an unsatisfied dependency return 422; already-approved tasks return 400. Trip stat caches are invalidated on save. ## OpenAPI ````yaml post /frontend/participant/trips/{client_id}/{trip_id}/tasks/{task_id}/complete/{session_id} 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/participant/trips/{client_id}/{trip_id}/tasks/{task_id}/complete/{session_id}: post: tags: - Trips summary: Mark a participant task as complete description: >- Records a `TripTaskCompletion` for the authenticated participant. If the task `requires_approval`, the row is saved with `status=completed` (pending leader review); otherwise it auto-promotes to `status=approved`. Tasks gated by an unsatisfied dependency return 422; already-approved tasks return 400. Trip stat caches are invalidated on save. operationId: f5d7bbd08b40609b4f921ccf4032fb20 parameters: - name: client_id in: path required: true schema: type: integer format: int64 example: 207 - name: trip_id in: path required: true schema: type: integer format: int64 example: 512 - name: task_id in: path required: true schema: type: integer format: int64 example: 8801 - name: session_id in: path required: true schema: type: string requestBody: required: false content: application/json: schema: properties: upload_id: description: >- Upload referencing a document the participant submitted as proof. Required (validator closure rejects null) when the task has `requires_document=true`. Validator rule: `nullable|integer` + closure that fails if `requires_document` and missing. type: integer format: int64 example: 4421 nullable: true type: object responses: '200': description: Completion recorded. content: application/json: schema: properties: status: type: string example: success message: description: >- `Task completed successfully` or `Task marked as complete. Waiting for approval.` depending on the task's approval flag. type: string data: description: >- Returns the saved TripTaskCompletion with its eager-loaded upload. type: object type: object '400': description: Task already completed and approved. content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' '401': description: No active donor session. content: application/json: schema: $ref: '#/components/schemas/UnauthorizedResponse' '403': description: Donor is not an active participant. content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' '404': description: Task not found in this trip. content: application/json: schema: $ref: '#/components/schemas/NotFoundResponse' '422': description: >- Either validation failed (e.g. missing required document upload) or the task is gated by an unsatisfied prerequisite. content: application/json: schema: $ref: '#/components/schemas/ValidationErrorResponse' security: - sessionIdAuth: [] components: schemas: ErrorResponse: title: ErrorResponse description: >- Generic error envelope used by most controllers. Most error responses pair a human-readable `message` with `status: error`. Some endpoints additionally include `errors` (validator errors), `error` (legacy single-error string), `code`, or domain-specific context fields. required: - message properties: message: description: Human-readable error message. type: string example: Something went wrong. Please try again. status: description: >- Always the literal string `error` for failures. Some endpoints omit this field. type: string example: error error: description: Legacy single error code/string used by older endpoints. type: string example: invalid_request nullable: true code: description: >- Optional application-level error code (not all endpoints populate this). type: string example: DONOR_NOT_FOUND nullable: true type: object UnauthorizedResponse: title: UnauthorizedResponse description: >- Returned with HTTP 401 when the request lacks a valid Passport bearer token, a valid `X-HYS-API-Key`, or a valid session. The body is the simple `{message, status}` envelope emitted by `AuthenticateApiOrKey`. required: - message - status properties: message: description: >- Always the literal string `Unauthorized` from the `auth.api_or_key` middleware. Login endpoints return `Invalid Credentials` instead. type: string example: Unauthorized status: type: string example: error type: object NotFoundResponse: title: NotFoundResponse description: >- Returned with HTTP 404 when a resource lookup misses (typically because the id doesn't exist OR is scoped to a different `client_id`). Note: many endpoints intentionally collapse 'not found' and 'forbidden' into a single 404 to avoid leaking which records exist in another tenant. required: - message properties: message: description: >- Human-readable message. Often a more specific string like `Donor not found` or `Trip not found`. type: string example: Not Found status: type: string example: error type: object 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 securitySchemes: sessionIdAuth: type: apiKey description: >- Legacy session-id header retained for backwards compatibility with older first-party clients. New integrations should prefer bearerAuth or apiKeyAuth. name: session_id in: header ```` This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.