A remote MCP server cannot read a path on your machine. MagicPost therefore
uses a signed two-step upload:
prepare_post_media_upload prepares a short-lived upload request.
Claude Code reads and uploads the local file over HTTPS.
complete_post_media_upload validates and attaches it to the draft.
Ask Claude Code:
Create a LinkedIn post from this text, attach
/absolute/path/to/product.png, and schedule it for tomorrow at 09:00
Europe/Paris.
Claude Code should create the draft, prepare the upload, send the local bytes,
complete the attachment, and then schedule the post. It should surface any
same-day or exact-slot warning before forcing the schedule.
Local paths only work through the prepare/complete workflow. Do not pass a
path as media_file to attach_media_to_post; that tool expects a temporary
file reference supplied by a compatible chat host.
