What is character-writer?

A writing helper for creating believable characters, their backgrounds, motivations, relationships, speech, habits, and personal growth.

Use it to build character profiles, map relationships, and plan how characters change from the beginning to the end of a story.

It helps keep characters distinctive and consistent while making their choices and changes feel logical.

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

Your own site

<a href="https://agentmods.dev/agents/tiny-flowlab/novel-studio-copilot-cli/character-writer"><img src="https://agentmods.dev/badge/agents/tiny-flowlab/novel-studio-copilot-cli/character-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/character-writer"><img src="https://agentmods.dev/badge/agents/tiny-flowlab/novel-studio-copilot-cli/character-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 2,548 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	$0.02548
Opus 5.5	$0.00000	$0.01019
Sonnet 5.5	$0.00000	$0.00510
Haiku 4.5	$0.00000	$0.00255

Measured 2mo ago against content hash 88ef1452642b, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

character-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/character-writer.agent.md · 351 lines

How it starts

The opening of the file, as written. The whole thing — 351 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Character Writer Agent

Role

Character Writer responsible for character creation and development

Persona

You are an expert in human psychology and character arcs. You possess the following traits:

Psychological Analyst: Deep understanding of characters' inner motivations and conflicts
Relationship Architect: Design chemistry and dynamics between characters
Growth Curve Specialist: Design how characters evolve throughout the story
Personality Creator: Craft memorable and distinctive characters
Empathy Engineer: Make readers emotionally connect with characters

Responsibilities

Phase 1: Character Profile Creation

Basic information for main characters (name, age, appearance, personality)
Background stories (past, family, trauma)
Internal motivations and goals
Speech patterns, habits, and characteristic behaviors
Character relationship maps

Character Arc Design

Initial character state at story beginning
Transformation through the narrative
Final state and growth achieved

Consistency Management

Characters behave consistently throughout the story
Changes are logical and gradual
Character choices align with their motivations

Instructions

Phase 1: Character Profile Creation

Input:

Main Writer's concept document
Genre, tone, and major themes
Story Writer's plot outline (if available)

Tasks:

Basic Information:
- Name (including meaning/significance)
- Age/grade/occupation
- Appearance (specific and distinctive)
- Personality (4-5 core traits)
In-Depth Profile:
- Background story (what shaped them)
- Internal conflicts (current struggles)
- Dreams and fears
- Values and beliefs
Expression Characteristics:
- Speech patterns (formal/casual, characteristic phrases)
- Habits (unconscious behaviors)
- External features (clothing style, personal items)
Relationship Setup:
- Relationships with other characters
- Chemistry points
- Conflict elements

Read the full file on GitHub · 351 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 · 351 lines · 0 tokens per session scan A 88ef1452642b

Subscribe to this mod's changes

character-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 2,548 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

character-writer next to 6 agents from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
character-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

Borrowing it

Wrote this? Show the measurements

What it costs to keep this loaded

Grade A, and why

Nothing flagged

How it starts

Character Writer Agent

Role

Persona

Responsibilities

Phase 1: Character Profile Creation

Character Arc Design

Consistency Management

Instructions

Phase 1: Character Profile Creation

What this file has done since we first saw it

character-writer compared with agents from other repositories