> ## Documentation Index > Fetch the complete documentation index at: https://api-docs.voicecheap.ai/docs/llms.txt > Use this file to discover all available pages before exploring further. # Complete a thumbnail reference upload > Complete an owned image reference upload using the part numbers and ETags from PUT requests. Verifies the stored file size. Use the returned fileKey as the generation reference. Complete an owned image reference upload using the part numbers and ETags from PUT requests. Verifies the stored file size. Use the returned fileKey as the generation reference. ```http theme={null} POST https://api.voicecheap.ai/v1/actions/thumbnails_upload_complete ``` ## Authentication and permissions Send a VoiceCheap API key in this header. Authorization: Bearer with the same API key is also supported. OAuth access tokens are accepted only by MCP, not by this REST endpoint. Required permissions: `thumbnails:write`. An active paid subscription is required. Permissions do not change team roles, resource ownership, media credits, or plan limits. ## Parameters Optional at the transport boundary: the server injects an identifier before validation when omitted. Supply your own stable UUID v4 to recover safely from a lost response. Format: "uuid". Pattern: `^[0-9a-fA-F]{8}-[0-9a-fA-F]{4}-4[0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}$`. The uploadId returned by this domain’s upload\_initialize action. Format: "uuid". Pattern: `^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|ffffffff-ffff-ffff-ffff-ffffffffffff)$`. List of values. See the complete input schema for its item structure. Minimum items: 1. Maximum items: 2. The JSON Schema below preserves the exact field names, nested types, defaults, bounds, and accepted values exposed by discovery. Additional cross-field rules are listed in the operation notes. ```json theme={null} { "type": "object", "properties": { "requestId": { "description": "UUID v4 for this action. Reuse the same ID with identical arguments on retries.", "type": "string", "format": "uuid", "pattern": "^[0-9a-fA-F]{8}-[0-9a-fA-F]{4}-4[0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}$" }, "uploadId": { "type": "string", "format": "uuid", "pattern": "^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|ffffffff-ffff-ffff-ffff-ffffffffffff)$", "description": "The uploadId returned by this domain’s upload_initialize action." }, "parts": { "minItems": 1, "maxItems": 2, "type": "array", "items": { "type": "object", "properties": { "partNumber": { "type": "integer", "minimum": 1, "maximum": 2 }, "etag": { "type": "string", "minLength": 1, "maxLength": 256 } }, "required": ["partNumber", "etag"], "additionalProperties": false } } }, "required": ["uploadId", "parts"], "additionalProperties": false } ``` ## Idempotency Use a UUID v4 in requestId or the Idempotency-Key HTTP header for each mutation. Reuse the same identifier and identical arguments after a network failure. If both are supplied, they must match. Replaying a saved request does not repeat the operation or charge another monthly call. Failed or interrupted requests are not restarted automatically. Every mutation can return HTTP 202 when a retry finds the same request still running, even when its first execution is normally synchronous. If execution completed but resultStored is false, a retry returns HTTP 200 with saved request state instead of the original result. Retrieve the output through its domain history, result, or download action. ## Request examples Replace example resource identifiers and media keys with values returned for your account. Keep the request identifier stable when retrying the same mutation. ```bash cURL theme={null} curl --request POST 'https://api.voicecheap.ai/v1/actions/thumbnails_upload_complete' \ --header "x-api-key: $VOICECHEAP_API_KEY" \ --header 'Content-Type: application/json' \ --data '{"requestId":"ef5fe21c-c80c-4b96-b2ed-8d37bf2c667a","uploadId":"c547fb7f-f334-46a8-a8bb-80b5b343889a","parts":[{"partNumber":1,"etag":"\"d41d8cd98f00b204e9800998ecf8427e\""},{"partNumber":2,"etag":"\"0cc175b9c0f1b6a831c399e269772661\""}]}' ``` ```javascript JavaScript theme={null} const input = { requestId: 'ef5fe21c-c80c-4b96-b2ed-8d37bf2c667a', uploadId: 'c547fb7f-f334-46a8-a8bb-80b5b343889a', parts: [ { partNumber: 1, etag: '"d41d8cd98f00b204e9800998ecf8427e"', }, { partNumber: 2, etag: '"0cc175b9c0f1b6a831c399e269772661"', }, ], }; const response = await fetch('https://api.voicecheap.ai/v1/actions/thumbnails_upload_complete', { method: 'POST', headers: { 'x-api-key': process.env.VOICECHEAP_API_KEY, 'Content-Type': 'application/json', }, body: JSON.stringify(input), }); const body = await response.json(); if (!response.ok) throw new Error(body.code + ': ' + body.message); console.log(body); ``` ```python Python theme={null} import os import requests response = requests.post( "https://api.voicecheap.ai/v1/actions/thumbnails_upload_complete", headers={"x-api-key": os.environ["VOICECHEAP_API_KEY"]}, json={"requestId": "ef5fe21c-c80c-4b96-b2ed-8d37bf2c667a", "uploadId": "c547fb7f-f334-46a8-a8bb-80b5b343889a", "parts": [{"partNumber": 1, "etag": "\"d41d8cd98f00b204e9800998ecf8427e\""}, {"partNumber": 2, "etag": "\"0cc175b9c0f1b6a831c399e269772661\""}]}, timeout=120, ) body = response.json() if not response.ok: raise RuntimeError(f"{body.get('code')}: {body.get('message')}") print(body) ``` ## Response A successful first execution returns HTTP 200 with the operation result under data. A replay may return saved request state instead. The example shows one supported response, not every optional field. The completed owned reference key and its read URL, returned only after the stored byte length exactly matches the declared file size. Use fileKey, not readUrl, in generation arguments. ```json HTTP 200 theme={null} { "data": { "fileKey": "uploads/example-user/2502829e-3fde-4aad-b3c7-ce0f779fa2e6-reference.png", "readUrl": "https://media.example.com/uploads/example-user/2502829e-3fde-4aad-b3c7-ce0f779fa2e6-reference.png" }, "requestId": "ef5fe21c-c80c-4b96-b2ed-8d37bf2c667a" } ``` ```json HTTP 202 replay_running theme={null} { "data": { "requestId": "ef5fe21c-c80c-4b96-b2ed-8d37bf2c667a", "operation": "thumbnails_upload_complete", "createdAt": 1792144800000, "updatedAt": 1792144820000, "status": "running", "pollAfterSeconds": 5 }, "requestId": "ef5fe21c-c80c-4b96-b2ed-8d37bf2c667a" } ``` ```json HTTP 200 replay_completed_without_result theme={null} { "data": { "requestId": "ef5fe21c-c80c-4b96-b2ed-8d37bf2c667a", "operation": "thumbnails_upload_complete", "createdAt": 1792144800000, "updatedAt": 1792144820000, "status": "completed", "resultStored": false, "message": "The action completed. Retrieve its output from the corresponding history or resource action." }, "requestId": "ef5fe21c-c80c-4b96-b2ed-8d37bf2c667a" } ``` ## Result fields | Field | Description | | - | - | | `data.fileKey` | Completed owned object key to use as a generation reference. | | `data.readUrl` | Read URL for the uploaded reference object. Generation actions accept fileKey, not this URL. | ## Recover and poll this request Use the same identifier even after a lost connection. If resultStored is false, retrieve the output through the corresponding history, result, or download action. Never start a second generation merely to check progress. ```bash theme={null} curl --request POST 'https://api.voicecheap.ai/v1/actions/action_request_get' \ --header "x-api-key: $VOICECHEAP_API_KEY" \ --header 'Content-Type: application/json' \ --data '{"requestId":"ef5fe21c-c80c-4b96-b2ed-8d37bf2c667a","operation":"thumbnails_upload_complete"}' ``` ```json HTTP 200 theme={null} { "data": { "requestId": "ef5fe21c-c80c-4b96-b2ed-8d37bf2c667a", "operation": "thumbnails_upload_complete", "status": "completed", "createdAt": 1792144800000, "updatedAt": 1792144820000, "resultStored": true, "result": { "fileKey": "uploads/example-user/2502829e-3fde-4aad-b3c7-ce0f779fa2e6-reference.png", "readUrl": "https://media.example.com/uploads/example-user/2502829e-3fde-4aad-b3c7-ce0f779fa2e6-reference.png" } } } ``` ## Operation notes * Requires thumbnails:write; no additional upload scope is needed. * uploadId is the UUID from initialize. parts contains exactly the 1–2 parts required by the session. Each part has an integer partNumber from 1 to 2 and an etag string of 1–256 characters taken from its successful PUT response. * All part numbers must be present and unique. Parts are sorted before completion; ETags are normalized to quoted values. You may preserve the ETag quotes returned by storage. * The completed object’s actual byte length is checked against fileSize and the 8 MiB cap. A missing, mismatched, or oversized length causes the object and active session to be removed and returns UPLOAD\_SIZE\_MISMATCH. * Pass fileKey as an entry in referenceImageKeys in thumbnails\_generate. Completed reference files can be reused for subsequent image or thumbnail generations owned by the same user; generation does not consume the reference. * Only an upload belonging to the connected user can be signed, completed, or aborted. These aliases accept only JPG, PNG, and WebP sessions of at most 8 MiB, even if the session was created through a different upload family. * The production upload session expires after 24 hours. Signed part URLs expire after one hour. Completion and abort remove the active session; sign-parts and complete then return Upload not found. Neither response includes an expiresAt field. * Use a UUID v4 requestId, or the HTTP Idempotency-Key header, and reuse it with identical inputs when retrying. The integration layer records each mutation and returns its recorded state or result without rerunning it. A failed or interrupted request is not automatically retried. * Completion closes the multipart session. Retry completion with the original requestId to retrieve its recorded result; a new completion request for that closed uploadId returns Upload not found. No reference-retention expiry is returned by this action. ## Usage Each successful invocation consumes one monthly API/MCP call. Media credits and the operation's own generation allowances also apply. ## Errors | HTTP status | Code | Meaning or recovery | | - | - | - | | 400 | `BAD_REQUEST` | The completion list has missing, duplicate, or invalid part numbers. | | 400 | `CREDENTIAL_IN_QUERY` | Credentials were supplied in an access\_token or api\_key query parameter. Send credentials in headers. | | 400 | `IDEMPOTENCY_CONFLICT` | The Idempotency-Key header and requestId body field must match. | | 400 | `INVALID_REQUEST_ID` | requestId or Idempotency-Key is not a UUID v4. | | 400 | `UPLOAD_SIZE_MISMATCH` | The completed object’s stored size is unavailable, differs from fileSize, or exceeds 8 MiB; the object and session are removed. | | 400 | `UPLOAD_TYPE_NOT_ALLOWED` | The upload session is not a supported image type or exceeds 8 MiB. | | 400 | `VALIDATION_ERROR` | An argument is missing, has an unsupported value, exceeds its limit, or is not part of the strict input schema. | | 401 | `API_KEY_EXPIRED` | The API key has expired. | | 401 | `INVALID_API_KEY` | Provide a valid, unexpired API key. | | 401 | `INVALID_CREDENTIAL` | The Authorization header is malformed or conflicts with x-api-key. | | 401 | `MISSING_CREDENTIAL` | No usable header credential was supplied, or it exceeded 4096 characters. | | 401 | `UNAUTHORIZED` | The upload session belongs to a different user. | | 401 | `USER_NOT_FOUND` | The credential's account no longer exists. | | 403 | `ACCOUNT_UNAVAILABLE` | The acting or billing account is unavailable or being deleted. | | 403 | `AMBIGUOUS_TEAM_API_KEY` | The credential's user belongs to more than one team, so the billing context is ambiguous. | | 403 | `INSUFFICIENT_SCOPE` | Grant every required permission or choose another credential. | | 403 | `INTEGRATION_PLAN_UNSUPPORTED` | The account's integration limits could not be verified. | | 403 | `SUBSCRIPTION_REQUIRED` | Use an active paid subscription. | | 403 | `TEAM_OWNER_NOT_FOUND` | The effective team owner account could not be found. | | 404 | `NOT_FOUND` | The upload session is unknown, expired, already completed, or aborted. | | 409 | `CONCURRENT_ACTION_LIMIT_REACHED` | This account already has 10 integration actions running. Poll an existing request before starting another. | | 409 | `IDEMPOTENCY_CONFLICT` | The request identifier was already used with different arguments; a header/body identifier mismatch returns HTTP 400 with the same code. | | 429 | `INTEGRATION_MONTHLY_LIMIT_REACHED` | Wait for the monthly reset or change plan. | | 429 | `INTEGRATION_RATE_LIMIT_REACHED` | Wait for Retry-After when present and use backoff. | | 500 | `INTERNAL_ERROR` | Check saved request state and resource history before deciding to retry a mutation. | | 503 | `ACTION_RESULT_UNAVAILABLE` | The action ran but its result could not be saved. Inspect saved request state and resource history before starting a new generation. | | 503 | `INTERNAL_ERROR` | The active upload session could not be read. Inspect the request state before another completion attempt. | | 503 | `SERVER_RESTARTING` | The server is restarting. Retry shortly and keep the same request identifier for a mutation. | ```json theme={null} { "code": "INSUFFICIENT_SCOPE", "message": "This credential does not permit the requested action.", "status": 403, "details": { "requiredScopes": ["thumbnails:write"] } } ``` This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.