> ## Documentation Index > Fetch the complete documentation index at: https://docs.gostudio.ai/llms.txt > Use this file to discover all available pages before exploring further. # Poll job status > Looks up a watermark removal job by its `job_id`. `output_urls` and `credits_deducted` appear once `status` is `completed`; `error` appears when it is `failed`. You do not need this to complete a normal generation — `POST /api/v2/apps/watermark-remover` already waits for the result. Use it to re-fetch the outputs of an earlier job, or to check on one submitted by a request whose connection dropped. Allowed callers: `user`. An internal service token passes the auth gate but carries no user context, so every lookup returns `404`. ## OpenAPI ````yaml /openapi.yaml get /api/v2/apps/watermark-remover/{jobId} openapi: 3.0.3 info: title: GoStudio Watermark Remover API version: 2.0.0 description: > The Watermark Remover endpoints of the GoStudio v2 REST API. Every response uses a standard envelope: successes return `{ status, data }`; errors return `{ status, error: { type, code, dev, message } }`. Every endpoint here takes a **Supabase user JWT** as a Bearer token. An `internal` service token is accepted by the auth layer but carries no user identity, so it cannot be used to generate or look up a job. The one exception is the provider callback, which is authenticated by signature rather than by a caller token. servers: - url: https://www.gostudio.ai description: Production security: - bearerAuth: [] tags: - name: Watermark Remover description: AI watermark removal — orchestration, model metadata, and job polling. - name: Webhooks description: Endpoints called by external services, not by your application. paths: /api/v2/apps/watermark-remover/{jobId}: get: tags: - Watermark Remover summary: Poll job status description: > Looks up a watermark removal job by its `job_id`. `output_urls` and `credits_deducted` appear once `status` is `completed`; `error` appears when it is `failed`. You do not need this to complete a normal generation — `POST /api/v2/apps/watermark-remover` already waits for the result. Use it to re-fetch the outputs of an earlier job, or to check on one submitted by a request whose connection dropped. Allowed callers: `user`. An internal service token passes the auth gate but carries no user context, so every lookup returns `404`. operationId: getWatermarkJob parameters: - name: jobId in: path required: true description: The `job_id` returned when the generation was submitted. schema: type: integer example: 12345 responses: '200': description: Job status returned successfully. content: application/json: schema: type: object properties: status: type: integer example: 200 data: $ref: '#/components/schemas/WatermarkPollResult' '400': $ref: '#/components/responses/BadRequest' '401': $ref: '#/components/responses/Unauthorized' '403': $ref: '#/components/responses/Forbidden' '404': description: Job not found, or not owned by the authenticated user. content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' example: status: 404 error: type: not_found_error code: job_not_found dev: 40404 message: Job not found. '429': $ref: '#/components/responses/RateLimited' '500': $ref: '#/components/responses/ServerError' '503': $ref: '#/components/responses/ServiceUnavailable' components: schemas: WatermarkPollResult: type: object properties: job_id: type: integer status: type: string enum: - pending - processing - completed - failed - abandoned model_id: type: string output_urls: type: array description: Present once the job has completed. items: type: string format: uri credits_deducted: type: number description: Present once the job has completed. error: type: string description: Present only when the job failed. created_at: type: string format: date-time updated_at: type: string format: date-time ErrorResponse: type: object properties: status: type: integer example: 400 error: type: object properties: type: type: string example: validation_error code: type: string example: invalid_input dev: type: integer example: 40001 message: type: string example: Some information is invalid. responses: BadRequest: description: The request was malformed or failed validation. content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' example: status: 400 error: type: validation_error code: invalid_input dev: 40001 message: Some information is invalid. Unauthorized: description: Missing or invalid Authorization Bearer token. content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' example: status: 401 error: type: authentication_error code: unauthorized dev: 40100 message: Missing or invalid Authorization Bearer token. Forbidden: description: Caller type not allowed for this endpoint. content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' example: status: 403 error: type: permission_error code: forbidden dev: 40300 message: You don't have permission for this action. RateLimited: description: Too many requests. content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' example: status: 429 error: type: rate_limit_error code: rate_limited dev: 42900 message: You're doing that too often. Please wait a moment. ServerError: description: Unexpected server error. content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' example: status: 500 error: type: system_error code: internal_error dev: 50000 message: Something went wrong on our end. ServiceUnavailable: description: > A dependency is temporarily unavailable. Auth-dependent endpoints return `service_unavailable` (dev 50300) when the auth provider is down; generation endpoints return `model_unavailable` (dev 50301) when the model provider is. Both are safe to retry with backoff. content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' example: status: 503 error: type: system_error code: service_unavailable dev: 50300 message: Auth service is temporarily unavailable. securitySchemes: bearerAuth: type: http scheme: bearer bearerFormat: JWT description: > Supabase user JWT (or an internal service token). Send as `Authorization: Bearer `. ````