POST /tenders is the programmatic twin of forwarding an LV / RFQ email to anfragen@lv.mercura.ai: send the same files you would attach to the mail and Mercura runs the identical intake pipeline — same parsers, same matching, same landing states. Accepted files: GAEB (.d81/.d83/.d94/.p81/.p83/.p93/.p94/.x81/.x83/.x93/.x94/.onlv), .xlsx, .csv, .docx, .txt, .pdf, images, and .eml. Max 50 MB per file, 100 MB total, 20 files. Mercura picks the file that drives parsing (GAEB before spreadsheet/CSV/DOCX/TXT before PDF before image); at least one file must be parsable.
Use the optional context field to pass anything that helps Mercura process the tender — the original email body, delivery notes, or guidance for article matching. An unresolvable customer_id / customer_email is not an error: the tender is created without a customer, exactly like an email from an unknown sender.