Let's Talk About AO3 Matching
Ao3 exchanges use OR matching within each matchable category — things like Fandom, Character, Relationship, and Additional Tag, and so on. Mods can choose which categories will be used for matching and how many matching items are required.
It does not combine tags across requests/offers — one request + one offer that share one tag in each category is often the minumum to make two signups "matchable."
What does this mean for requests?
If your request has a "load-bearing tag" — say you definitely want Mo Xuanyu/Wei Wuxian but are fine if that's in the context of a polyship — you should not add additional ship tags to your request. That's what the text box is for!
Relationships: Mo Xuanyu/Wei Wuxian, Lan Wangji/Mo Xuanyu, Lan Wangji/Wei Wuxian, Lan Wangji/Mo Xuanyu/Wei Wuxian Additional Details: I really really love MXY/WWX more than anything!
⬆️ This request could match on any of those four relationship tags — the creator may not have offered Mo Xuanyu ships at all!
Relationships: Mo Xuanyu/Wei Wuxian Additional Details: I really really love MXY/WWX more than anything! Happy to see this relationship as part of a polycule with Lan Wangji too.
⬆️ This request WILL match with a creator who offered Mo Xuanyu/Wei Wuxian, and they will know you're open to an OT3!
Same goes for the other categories of tag — if there's one you definitely want, you would NOT also include other tags you like as "flavor" for the load-bearing tag.
Additional Tags: Giant Robot Co-Pilots, Telepathic Bond, Only One Bed Additional Details: PACIFIC RIM AU YES PLEASE
⬆️ Your creator who offered Telepathic Bond and Only One Bed and has never seen Pacific Rim: 😰
Keeping the matching criteria in mind when writing your requests will help ensure that your assigned creator is excited to make something for that prompt you really want. Exchanges will differ slightly in terms of what categories and how many tags are used to match — you'll usually find this info in the Rules/FAQ, or when in doubt, contact the mods! Happy exchanging!











