Media - GreenTick

The assistant calls get_media_guidelines before it uploads a file. It does not generate a file. A header image for a new template comes only from generate_template. See Templates.

What you can upload

upload_media hosts a file you already have. purpose is one of:

Purpose	Allowed files
`template_header`	JPEG or PNG up to 5 MB, MP4 up to 16 MB, or PDF up to 100 MB. The sample must match the header type. Utility templates must not contain promotional copy.
`catalog`	JPEG or PNG up to 8 MB, or MP4 up to 100 MB. The URL can be up to 2048 characters.
`knowledge`	PDF, plain text, Markdown, or JSON up to 15 MB.

Pass a public https URL or one complete base64 value up to 5 MB, plus mimeType and filename when you have them. HTML, SVG, scripts, and executables are rejected. A partial or cut-off file is rejected. That failure blocks create_template and create_catalog_product until a complete file is uploaded. The rejected upload is not a media id.

Chat attachments

send_conversation_media sends an image, video, or PDF inside an open customer service window. Pass mediaUrl from upload_media, or a complete mediaBase64 value. The assistant does not generate that file. Details are on Inbox.