What is setting-writer?

A writing assistant for designing the world and background of a story. It develops places, time periods, weather, culture, social systems, atmosphere, and sensory details.

Use it to create a world document from a story concept. It can plan locations, time and place, seasons, weather, culture, social structures, sensory details, symbols, and setting consistency.

Stories can feel vague when their world lacks consistent places, rules, history, or atmosphere. This assistant helps connect the setting to the plot, characters, genre, and emotional tone.

How tiny-flowlab/novel-studio-copilot-cli configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to tiny-flowlab/novel-studio-copilot-cli. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file

curl -O https://raw.githubusercontent.com/tiny-flowlab/novel-studio-copilot-cli/main/.github/agents/setting-writer.agent.md

Clone the repo

git clone --depth 1 https://github.com/tiny-flowlab/novel-studio-copilot-cli

Made for: Claude Code.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

README.md

[![agentmods](https://agentmods.dev/badge/agents/tiny-flowlab/novel-studio-copilot-cli/setting-writer/github.svg)](https://agentmods.dev/agents/tiny-flowlab/novel-studio-copilot-cli/setting-writer)

Your own site

<a href="https://agentmods.dev/agents/tiny-flowlab/novel-studio-copilot-cli/setting-writer"><img src="https://agentmods.dev/badge/agents/tiny-flowlab/novel-studio-copilot-cli/setting-writer/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

Your own site · 80×15

<a href="https://agentmods.dev/agents/tiny-flowlab/novel-studio-copilot-cli/setting-writer"><img src="https://agentmods.dev/badge/agents/tiny-flowlab/novel-studio-copilot-cli/setting-writer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 0 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.

When invoked 2,530 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin original No closer match found in the catalogue.

Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

Model	Per session	Once invoked
Fable 5.1	$0.00000	$0.02530
Opus 5.5	$0.00000	$0.01012
Sonnet 5.5	$0.00000	$0.00506
Haiku 4.5	$0.00000	$0.00253

Measured 2mo ago against content hash 2b0af2419afb, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

setting-writer scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2mo ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

.github/agents/setting-writer.agent.md · 356 lines

How it starts

The opening of the file, as written. The whole thing — 356 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Setting Writer Agent

Role

Setting Writer - Responsible for worldbuilding and background setting

Persona

You are a worldbuilding specialist with the following characteristics:

Spatial Designer: Creates vivid and immersive locations
Sensory Expert: Designs multi-dimensional descriptions through all five senses
Cultural Creator: Builds the atmosphere of time periods and societies
Detail Master: Brings realism through small details
Atmosphere Architect: Ensures the setting supports the story's tone

Responsibilities

Phase 1: World Setting

Spatiotemporal background (when, where)
Major location design (structure, atmosphere, characteristics)
Season and weather settings
Culture and social systems (when necessary)
Sensory elements (sight, sound, smell, touch, taste)

Consistency Maintenance

Internal logic of setting
Harmony with Story Writer's plot
Alignment with Character Writer's characters

Atmosphere Creation

Setting appropriate to genre and tone
Environment that supports emotional arcs
Utilization of symbols and motifs

Instructions

Phase 1: World Document Creation

Input:

Main Writer's concept
Genre, tone, historical period
Story Writer's plot (key event locations)

Tasks:

Basic Settings:
- Temporal background (year, season, duration)
- Spatial background (country, city, specific locations)
- Social context (historical period, culture)
Major Location Design (all locations appearing in the story):
- Structure and layout
- Visual characteristics (color, lighting, architecture)
- Atmosphere (romantic, tense, comfortable, etc.)
- Symbolic meaning
Sensory Design:
- Visual: Color, light, structure
- Auditory: Sounds, music, silence
- Olfactory: Scents, fragrances
- Tactile: Temperature, texture
- Gustatory: Food, beverages (when necessary)
Temporal Changes:
- Seasonal progression
- Atmosphere by time of day
- Weather variations

Read the full file on GitHub · 356 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

2mo ago First seen · 356 lines · 0 tokens per session scan A 2b0af2419afb

Subscribe to this mod's changes

setting-writer is an agent published in the GitHub repository tiny-flowlab/novel-studio-copilot-cli (20 stars, last pushed 8mo ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 2,530 tokens. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

Writing and docs

setting-writer next to 6 agents from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
setting-writertiny-flowlab/novel-studio-copilot-cli	Agent	20	8mo ago	MIT	A	0	Claude Code
playwright-test-generatormicrosoft/playwright	Agent	99k	yesterday	Apache-2.0	A	151	Claude Code
.NET-Notebook-Migration-Agentmicrosoft/ai-agents-for-beginners	Agent	79k	4d ago	MIT	A	33	Claude Code
code-revieweranthropics/claude-cookbooks	Agent	54k	2d ago	MIT	A	52	Claude Code
AVM Owner Triagegithub/awesome-copilot	Agent	41k	yesterday	MIT	A	61	Claude Code
Ultimate Transparent Thinking Beast Modegithub/awesome-copilot	Agent	41k	yesterday	MIT	A	11	Claude Code
WinForms Expertgithub/awesome-copilot	Agent	41k	yesterday	MIT	A	19	Claude Code

novel-studio-copilot-cli: Agent for Claude Code