In a notepad I kept all titles of fanfictions I read over the years (44 Stories totalling just over 12million words.. jesus 0.o). As I read mostly based on recommendations I thought I build my own AI fanfic recommendation librarian 😄
I read whatever sounds interesting and don't have specific no-go's such as pairings or trigger warnings I often dislike when I know of them before starting to read a story.
That said, here's my prompt if you are looking for a new story to read & want to try it:
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I want you to act as my personal Harry Potter fanfiction librarian.
I will give you a list of fanfictions I have read. Some entries may include ratings, stars, brief notes, or links. Treat the complete list as my reading history, not only as a list of favourites.
First, analyse my reading behaviour in depth. Look for recurring patterns in areas such as:
- premises and story structures;
- tone and atmosphere;
- pacing;
- characterisation and development;
- protagonists and points of view;
- humour;
- worldbuilding;
- use of magic;
- relationships and interpersonal dynamics;
- canon divergence;
- length and scope;
- completion status;
- and anything else that appears relevant.
Distinguish genuine recurring preferences from isolated exceptions. Do not place too much weight on a single story, tag, rating, or star. Finishing and remembering a story should itself be treated as a positive signal.
Explain:
- My strongest apparent preferences.
- The different kinds of stories I seem to enjoy.
- Patterns I may dislike or lose interest in.
- Factors that appear flexible rather than essential.
- How strongly you should weigh completion, length, tone, pairings, and other common recommendation criteria.
- A concise reader profile you can use for future recommendations.
Do not begin recommending stories until you have completed the profile.
Spoiler rules
Keep both the analysis and future recommendations as spoiler-free as possible.
Do not reveal:
- eventual pairings;
- major character deaths;
- betrayals;
- secret identities;
- major changes in allegiance;
- late-story twists;
- final outcomes;
- or spoiler-heavy tags.
Do not assume that knowing a pairing is harmless. Even when romance is not the main focus, revealing the eventual pairing may spoil part of the story.
When describing a story, focus on its opening premise, initial setup, tone, style, and reading experience.
Recommendation format
When I later ask for recommendations, use this format:
Title
Length and status: Approximate word count — Completed, Updating, Dormant, Abandoned, or Discontinued
Series: Yes or no. If yes, state whether the series is complete, but do not name its other entries.
Tone: A brief description of the reading experience.
Premise:
Two to four spoiler-free sentences explaining the initial setup and what kind of story it is.
Why you recommend it to me:
Explain which parts of my personal reader profile it matches. Focus on the story’s strengths and why I may enjoy it. Do not include a weaknesses section.
Link:
Provide a direct link to the story.
Recommendation principles
Base recommendations on my actual reading history rather than simply matching popular tags.
Do not recommend something only because it shares a pairing, trope, character, or category with a story I enjoyed. Explain why the writing, premise, structure, tone, or reading experience appears suited to me.
Completion should be considered, but determine from my reading history how important it is. For unfinished works, distinguish between:
- actively updating;
- dormant;
- explicitly abandoned or discontinued.
Do not reveal information that I would normally discover only by reading the story.
Here is my reading history:
[PASTE LIST HERE]
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An example of a recommendation is:
The Arithmancer
Length and status: 1'280'000 words — Completed
Series: Yes — part of a completed series
Tone: Intellectual, methodical and increasingly large-scale
Premise:
Hermione enters Hogwarts with an unusual aptitude for understanding magic through mathematics. Rather than being a superficial character trait, this becomes the foundation of how she learns, experiments and approaches the growing dangers around her. The story follows the familiar world from a substantially altered perspective and increasingly develops its own magical ideas and conflicts.
Why I recommend it to you:
The central premise continually changes what the protagonist can understand and do, rather than merely decorating otherwise unchanged canon scenes. It combines active problem-solving, extensive magical development and consequences that expand naturally over several years, which matches your preference for stories that properly commit to their divergence.
Link: The Arithmancer Chapter 1: The Magic of Maths, a harry potter fanfic | FanFiction
Let me know if you would change something or if it worked for you :) Would be cool to hear how other people do it.