Auctionet Auction Domain Knowledge

This codebase is a Chrome extension for Auctionet — Sweden's leading online auction platform with 3.65M+ historical auction results across 60+ auction houses. The extension augments the admin cataloging interface with AI assistance.

Swedish Auction Cataloging Conventions

Title Structure (by category)

• Furniture: BYRÅ, gustaviansk, sent 1700-tal. — NEVER include wood type in title
• Small items: VAS, majolika, nyrenässans, Gustafsberg, sent 1800-tal. — never "MAJOLIKAVAS", always separate material
• Services: MATSERVIS, 89 delar, porslin, "Maria Björnbär", Rosenthal.
• Rugs: MATTA, orientalisk, semiantik, ca 320 x 230 cm. — dimensions ALWAYS in title
• Silver: BÄGARE, 2 st, silver, CG Hallberg, Stockholm, 1942, ca 450 gram. — weight last in title
• Art: OIDENTIFIERAD KONSTNÄR, Rådjur, skulptur, brons, otydligt signerad, 18/1900-tal.
• Art (known artist): Artist name goes in the dedicated artist field (auto-prepended to title in UPPERCASE). Title contains: motif description, technique, signed/dated info.

Key Rules

• Object type in UPPERCASE at start of title
• Artist names: Förnamn Efternamn in the artist field, displayed UPPERCASE
• "Oidentifierad konstnär" for signed but unidentified artists
• Measurements: Höjd 84, bredd 47 cm or 45 x 78 cm for art (height first, without frame)
• Never use abbreviations — full words for Google SEO ("nysilver" not "NS", "Josef Frank" not "Frank")
• No subjective words: "fin", "vacker", "värdefull", "stor" are forbidden
• Condition terms: avoid vague "bruksslitage" / "bruksskick" — specify actual damage type
• Art titles in quotes ONLY if given by the artist themselves
• "Ej examinerad ur ram" — standard phrase for framed art not examined out of frame
• Never say "Ej funktionstestad" — implies we test items
• Avoid "Ingen anmärkning" — leads to complaints

Condition Field Quality Problem

31.7% of Auctionet listings use vague condition language. The extension's quality analyzer flags these and suggests specific alternatives:

• Furniture: Smärre ytslitage, Repor, Märken, Fläckar, Ringmärken
• Glass/Ceramics: Smärre nagg, Ytslitage, Hårspricka
• Textiles: Slitage fransar, Fläckar, Färgförändringar

Auctionet Platform Specifics

• Items are published by Auctionet staff after cataloging by auction houses
• Auction duration: ~10 days (configurable)
• Minimum reserve: 400 SEK
• Standard reserve: 60–80% of estimate
• Items re-listed automatically up to 3 times before manual intervention
• Transport cataloging: box size, number of parts, fragility rating
• Droit de suite (Följerätt) applies to identified and unidentified artists

Anti-Hallucination Rules

The extension enforces strict rules to prevent AI-invented information:

• NEVER fabricate artist dates, materials, or dimensions
• NEVER add historical context not explicitly in source data
• NEVER replace specific condition terms with vaguer ones
• Temperature kept low (0.15) for corrections, not creative rewriting
• Category-specific extra caution for: weapons/militaria, jewelry, historical items, watches

Swedish Auction Terminology

Auctionet API

• Public API: https://auctionet.com/api/v2/items.json
• Search: https://auctionet.com/sv/search
• Artists: https://auctionet.com/sv/artists
• Image CDN: https://images.auctionet.com/