# Complete uploads

URL: https://docs.hanzo.ai/docs/openapi/s3/post-s3-buckets-by-bucket-uploads-by-upload-complete

> Assembles a multipart upload into its object from every part the store holds, in order.

`POST /v1/s3/buckets/{bucket}/uploads/{upload}/complete`

> [S3 →](https://docs.hanzo.ai/docs/openapi/s3) · [All API references →](https://docs.hanzo.ai/docs/openapi) · [Get started →](https://docs.hanzo.ai/docs/guides)

|               |                                                                         |
| ------------- | ----------------------------------------------------------------------- |
| **Address**   | `https://api.hanzo.ai/v1/s3/buckets/{bucket}/uploads/{upload}/complete` |
| **Method**    | `POST`                                                                  |
| **Operation** | `post_s3_buckets_by_bucket_uploads_by_upload_complete`                  |
| **Auth**      | `Authorization: Bearer $HANZO_API_KEY`                                  |

Assembles a multipart upload into its object from every part the
store holds, in order. The parts must run 1, 2, 3 … with no gap; a gap is 409,
naming the first part missing, and the upload stays open to send it.

## Request

5 fields, body `application/json` (required).

| Field    | In   | Type   | Required | Description                                      |
| -------- | ---- | ------ | -------- | ------------------------------------------------ |
| `bucket` | path | string | yes      | Bucket is the bucket, from the path.             |
| `upload` | path | string | yes      | Upload is the upload's id, from the path.        |
| `bucket` | body | string | —        | Bucket is the bucket, from the path.             |
| `key`    | body | string | —        | Key is the object key the upload was started on. |
| `upload` | body | string | —        | Upload is the upload's id, from the path.        |

## Response

| Status    | Body            | Meaning |
| --------- | --------------- | ------- |
| `200`     | s3.uploadDone   | ok      |
| `default` | problem-details | refused |

`200` body — 4 fields.

| Field   | In   | Type            | Always | Description                                                 |
| ------- | ---- | --------------- | ------ | ----------------------------------------------------------- |
| `etag`  | body | string          | —      | ETag is the assembled object's tag, quotes stripped.        |
| `key`   | body | string          | —      | Key is the object's key.                                    |
| `parts` | body | integer (int64) | —      | Parts is how many parts it was assembled from.              |
| `size`  | body | integer (int64) | —      | Size is the object's length in bytes: the sum of its parts. |

Failure carries the platform error shape — see [Errors](https://docs.hanzo.ai/docs/errors).

## Examples

**CLI**

`hanzo` has no subcommand for this operation — the CLI serves only what cloud's live route table confirms. Use HTTP or an SDK.

**SDK**

**.ts**

```ts
import { Configuration, S3Api } from 'hanzoai';

const api = new S3Api(new Configuration({ accessToken: process.env.HANZO_API_KEY }));
const { data } = await api.postS3BucketsByBucketUploadsByUploadComplete({ bucket: 'bucket', upload: 'upload', bucket: "<bucket>", key: "<key>" });
```

**.py**

```python
from hanzoai.cloud import ApiClient, Configuration
from hanzoai.cloud.api import S3Api

client = ApiClient(Configuration(access_token=os.environ["HANZO_API_KEY"]))
result = S3Api(client).post_s3_buckets_by_bucket_uploads_by_upload_complete(bucket='bucket', upload='upload', bucket="<bucket>", key="<key>")
```

**.go**

```go
cfg := hanzoai.NewConfiguration()
cfg.AddDefaultHeader("Authorization", "Bearer "+os.Getenv("HANZO_API_KEY"))
client := hanzoai.NewAPIClient(cfg)

resp, _, err := client.S3API.PostS3BucketsByBucketUploadsByUploadComplete(context.Background()).Execute()
if err != nil {
	return err
}
```

**.rs**

```rust
use hanzo_client::apis::{configuration::Configuration, s3_api};

let mut cfg = Configuration::new();
cfg.bearer_access_token = std::env::var("HANZO_API_KEY").ok();

let result = s3_api::post_s3_buckets_by_bucket_uploads_by_upload_complete(&cfg, Default::default()).await?;
```

**.java**

```java
import ai.hanzo.cloud.ApiClient;
import ai.hanzo.cloud.api.S3Api;

ApiClient client = new ApiClient();
client.setBearerToken(System.getenv("HANZO_API_KEY"));

var result = new S3Api(client).postS3BucketsByBucketUploadsByUploadComplete();
```

**HTTP**

```bash
curl -X POST https://api.hanzo.ai/v1/s3/buckets/<bucket>/uploads/<upload>/complete \
  -H "Authorization: Bearer $HANZO_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
       "bucket": "<bucket>",
       "key": "<key>"
     }'
```

**MCP**

MCP reaches **s3** through the `s3` tool, which names its 6 operations with its own verbs — this one among them, under a name only MCP declares. `describe` explains any of them:

```bash
curl -X POST https://api.hanzo.ai/v1/mcp \
  -H "Content-Type: application/json" \
  -d '{
       "jsonrpc": "2.0",
       "id": 1,
       "method": "tools/call",
       "params": {
         "name": "describe",
         "arguments": {
           "op": "list_s3_buckets"
         }
       }
     }'
```

---

[S3 API](https://docs.hanzo.ai/docs/openapi/s3) · [All Hanzo APIs](https://docs.hanzo.ai/docs/openapi) · [Interactive reference](https://docs.hanzo.ai/docs/openapi/reference)