Day 6: Silly Tavern advanced customization

After Day 5, tune prompts and generation settings so replies match your taste—creative, factual, or balanced.

This article covers prompt types, parameters, UI tweaks, and extensions with 2026-oriented guidance. On day 6, make Silly Tavern feel truly yours.

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Prompt engineering

Prompt engineering shapes how you instruct the model—like choosing tone and rules for a collaborator.

Prompt layers in Silly Tavern

1. System prompt—global behavior rules
2. Character prompt—from the card
3. User messages—what you type

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System prompt

Sets baseline behavior.

Where to edit

1. Open Advanced Formatting (or equivalent in your build)
2. Find System Prompt
3. Enter instructions

Example

You are a helpful, knowledgeable assistant.
Answer user questions clearly and politely.
Respond in English unless the user writes in another language.

Tips

• Be specific; avoid vague “be good” lines
• Avoid contradictory rules
• Keep it concise—overlong system text can dilute focus

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Generation parameters | “Personality” of outputs

Parameter	Meaning	Typical range	Effect
Temperature	Randomness	0.7–1.0	Higher = more creative
Top-P	Nucleus sampling breadth	0.9–1.0	Higher = more diverse
Top-K	Candidate limit	40–100	Higher = less predictable
Repetition penalty	Anti-looping	1.1–1.2	Higher = fewer repeats
Max tokens	Reply length cap	200–500+	Raise for long replies

Presets (starting points)

Creative chat

• Temperature 0.9–1.0
• Top-P 0.95
• Top-K 80

Factual / tight

• Temperature 0.3–0.5
• Top-P 0.8
• Top-K 40

Balanced

• Temperature ~0.7
• Top-P 0.9
• Top-K 60

Exact labels vary by API preset UI—map these ideas to your backend’s sliders.

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UI customization

Theme

1. Settings
2. User Interface
3. Theme

Typography

• Font size
• Font family
• Line height

Layout

• Chat width
• Avatar size
• Message spacing

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Extensions

Silly Tavern supports extensions for extra behavior.

Popular ideas

1. Regex—text transforms
2. Summarize—thread compression
3. Character expressions—visual/emote hooks
4. Background—scene images

Install flow

1. Extensions panel
2. Install Extension
3. Provide URL or file per extension docs

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Summary

You explored advanced Silly Tavern customization—system prompts, sampling parameters, UI, and extensions. Day 7 covers mobile and MiniTavern for lighter setups.

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Reference links

• Silly Tavern official docs
• Prompting Guide
• MiniTavern official site

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About the author

花（Hana）

AI工具評価の専門家。東京・新宿三丁目周辺で活動し、最新のAIアプリケーションやツールを実際に使用してレビューを提供しています。

@xluuuu92030

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Published: March 16, 2026
Last updated: March 27, 2026

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Local models

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Day 7

MiniTavern APP