Media
Start a media upload
**Protocols:** Meta Cloud API
**Required scope:** `messages:write`
Start a resumable upload. Pass file_name, file_length and file_type as query parameters; returns { id: "upload:<SESSION_ID>" } whose id is the path of the subsequent append call.
POST
Start a media upload
Authorizations
Polymorfa organization key (pmfa_ prefix) or project token (pmfa_pt_ prefix). Client tokens are not accepted by Graph operations.
Path Parameters
Specifies version for this path parameter.
Example:
"v21.0"
Identifier of the connected application.
Example:
"1234567890123456"
Query Parameters
Human-readable file name for this query parameter.
Example:
"header.jpg"
Specifies file length for this query parameter.
Example:
"152728"
IANA media type that matches the uploaded file.
Value constraints
Example:
"image/jpeg"
Response
Upload session created (Meta response, forwarded verbatim)
The response is of type unknown.