Seller guide
Additional agreements (special terms)
How to record terms that apply only to this buyer on the certificate.
What are additional agreements?
This is where you write anything agreed only with this buyer, beyond the terms set on the listing (period, region, exclusivity, etc.). It appears on the certificate as "Additional agreements (special terms)" and becomes part of the contract. You can write up to 2,000 characters. The field name may look different depending on the right, such as "Confirmed appearance terms," but it's the same field.
Writing tips
- Be specific about what is allowed — state which material (links, quantity) is used where (platform, placement).
- Prior review — if something needs to be checked before posting, write down that process.
- Prohibitions — block unwanted edits, re-uploads, and resale in advance.
- Time-bound terms — write promises with a timeline, such as stock handling after expiry or how long posts stay up, with dates.
Examples by type
Here are common additional agreements for each right. You can also see the same examples with the Guide button to the right of the field label. When trading several rights together, refer to the example for each right.
Name/brand usage rights
e.g. Name display: limited to one Korean spelling of 'OOO' (logo and English spelling negotiated separately) e.g. Where used: product detail pages and packaging copy e.g. Quantity: 1 product (up to 3 SKUs), up to 2 ad creatives e.g. Trademark filing or business-name registration of the brand name is prohibited
Photo usage rights
e.g. Scope: shots A, B, C agreed in chat, 3 final photos e.g. Changed from 1 base photo to 3, ₩100,000 for 2 extra / product detail page for 3 months e.g. Retouching and cropping allowed; face compositing and AI training prohibited e.g. Ads requiring review (medical, financial, etc.) are checked before posting
Video usage rights
e.g. Scope: 1 video chosen by the buyer in chat, 00:10–00:30 e.g. Changed from brand repost to include paid brand ads, ₩50,000 extra e.g. Cut edits and subtitles allowed; edits that distort what was said are prohibited e.g. Re-uploading to third-party platforms is prohibited
Voice usage rights
e.g. Scope: agreed voice file A or final script, 1 clip, 30 seconds total or less e.g. New recording: script confirmation date, draft delivery date, agreed revisions e.g. Where used and edits are confirmed within the purchase terms e.g. Buyer AI generation: confirm the voice, service, access date, generation period, and allowed languages
Co-branding
e.g. Partner brand and campaign: agreed brand A, 1 fall co-campaign e.g. How both brands appear: 'Brand A × Brand B', final logo layout draft v2 e.g. Used in purchased regular SNS posts and website; final copy and drafts checked before release e.g. After the end, follow the contract terms. If kept for the record, mark it as an ended campaign
Merchandise rights
e.g. Materials and final draft: character file and keyring draft v2 agreed in chat e.g. 500 made in total: 390 for sale, 100 giveaways, 10 approval samples (no sales if non-sale only) e.g. Sales and distribution: agreed online stores and events; final draft and sample checked before mass production e.g. After the term ends: handle stock per the purchased clearance terms; no new production e.g. If there is a sales royalty, confirm the settlement basis and proof for units sold
Appearance rights
e.g. Date, time, and place or how to join: agreed date, Seoul event venue or online meeting link e.g. Activity and time: interview and photo shoot, once, within 60 minutes; confirm whether rehearsal is included e.g. Record what was actually agreed on travel and lodging, extensions, and extra costs e.g. Where and how long footage is used follows the purchase terms; confirm who shoots, delivers originals, and edits e.g. Confirm the terms for schedule changes or cancellations