Request an upload URL

POST

/v1/data/{artifactId}/blobs/upload

curl --request POST \
  --url https://shareout.site/v1/data/example/blobs/upload \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '{ "filename": "example", "mimeType": "example", "size": 1 }'

• Production

Step 1 of an upload. Returns an uploadUrl; PUT the raw file bytes to it within 15 minutes. When direct is true (presigned storage URL, non-browser callers only), POST confirmUrl afterwards to record the blob; when false the PUT itself records it and returns the Blob (201). Limits: 50MB per file, 500MB and 1000 blobs per artifact.

Authorizations

• bearerAuth

Parameters

Path Parameters

artifactId

required

string

Artifact ID (e.g. art_abc123).

Request Body^required

Media typeapplication/json

object

filename

required

string

mimeType

required

Image/, video/, audio/*, application/pdf, text/plain, text/csv, text/markdown.

string

size

Bytes. Optional, enables early quota checks.

integer

Example^generated

{
  "filename": "example",
  "mimeType": "example",
  "size": 1
}

Responses

201

Upload URL issued

Media typeapplication/json

object

success

boolean

data

object

uploadUrl

string format: uri

confirmUrl

Present only when direct is true.

string

tokenId

string

direct

boolean

expiresAt

string format: date-time

maxSize

integer

Example^generated

{
  "success": true,
  "data": {
    "uploadUrl": "https://example.com",
    "confirmUrl": "example",
    "tokenId": "example",
    "direct": true,
    "expiresAt": "2026-04-15T12:00:00Z",
    "maxSize": 1
  }
}

400

Invalid request

Media typeapplication/json

object

success

required

boolean

error

required

Human-readable message.

string

code

required

Machine-readable error code.

string

request_id

Correlation id (also the X-Request-Id header). Quote it in support tickets.

string

reason

Finer cause under code. For UNAUTHORIZED: missing, invalid, revoked or expired.

string

hint

What to do next, in plain words.

string

suggestion

string

param

The request field at fault.

string

docs

Doc page for this error.

string

redirect_url

string

support

Present on 5xx — how to reach a human.

object

how

string

include

Array<string>

Example

{
  "success": false,
  "support": {
    "how": "POST /v1/support/tickets",
    "include": [
      "request_id"
    ]
  }
}

413

File too large or storage full

Media typeapplication/json

object

success

required

boolean

error

required

Human-readable message.

string

code

required

Machine-readable error code.

string

request_id

Correlation id (also the X-Request-Id header). Quote it in support tickets.

string

reason

Finer cause under code. For UNAUTHORIZED: missing, invalid, revoked or expired.

string

hint

What to do next, in plain words.

string

suggestion

string

param

The request field at fault.

string

docs

Doc page for this error.

string

redirect_url

string

support

Present on 5xx — how to reach a human.

object

how

string

include

Array<string>

Example

{
  "success": false,
  "support": {
    "how": "POST /v1/support/tickets",
    "include": [
      "request_id"
    ]
  }
}