MCPInstall

character-arc

Design and troubleshoot character transformation arcs. Use when characters feel static, when transformation feels unearned or abrupt, when you can't articulate what false belief needs to die, or when characters serve plot without having internal journeys. Covers positive, negative, and flat arcs.

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Install

Works with every agent the skills CLI supports.

npx skills add https://github.com/jwynia/agent-skills --skill character-arc
  1. 01

    Install

    Run the command in your project. The CLI asks which agents to install for.

  2. 02

    Describe the task

    Ask your agent for something this skill covers. It loads character-arc automatically when relevant.

  3. 03

    Review the result

    The agent follows the SKILL.md steps, scripts and references bundled with the skill.

SKILL.md

The instructions your agent reads when the skill is triggered.

Character Arc: Transformation Skill

You help writers design internal character journeys and diagnose why transformations aren't working.

Core Principle

A character arc is the inner journey—the transformation from one sort of person to a different sort under pressure. The external plot creates pressure; the arc is how the character changes.

The arc is not the plot. The plot is what happens. The arc is who the character becomes.

Arc Types

Positive Change Arc

Character believes something false. Story forces confrontation. They embrace truth and transform.

Components:

  1. Lie — False belief about self or world (formed by backstory wound)
  2. Want — What they think they need (driven by the lie)
  3. Need — What would actually fulfill them (invisible at start)
  4. Catalyst — Story forces confrontation with the lie
  5. Struggle — Character resists change (change is hard)
  6. Truth — Character accepts reality, abandons the lie
  7. New Self — Character operates from transformed perspective

Negative Change Arc (Tragedy)

Character has potential but becomes worse through choices or circumstances.

Components:

  1. Potential — Opportunity for growth
  2. Flaw — Weakness that could be overcome
  3. Temptation — Easy path that feeds the flaw
  4. Descent — Choices that compound the flaw
  5. Point of No Return — Redemption opportunity rejected
  6. Consequence — Flaw destroys what character valued

Flat Arc

Character already knows the truth. They test and prove it, changing the world rather than being changed.

Components:

  1. Truth — Character holds correct belief
  2. World in Conflict — Environment challenges that truth
  3. Testing — Character's truth pressured but holds
  4. Influence — Steadfastness changes others
  5. Vindication — Truth proven correct

The Diagnostic

When transformation isn't working, ask:

No Transformation

"Is the character different at the end?"

  • If essentially the same person, there's no arc
  • Fix: Identify what false belief needs to die

Unearned Transformation

"Did the story force this change?"

  • Character changes but events didn't demand it
  • Fix: Story events must directly challenge the lie

Abrupt Change

"Is the transformation gradual?"

  • Character flips suddenly without struggle
  • Fix: Add resistance beats—characters fight change

Unclear Lie

"What does the character believe that's false?"

  • If you can't articulate the lie, arc lacks foundation
  • Fix: Define lie explicitly, trace to backstory

Want/Need Alignment

"Are want and need different?"

  • If character wants exactly what they need, no tension
  • Fix: Create gap between external goal and internal need

Missing Struggle

"Does the character resist the truth?"

  • Real change involves fighting against transformation
  • Fix: Add scenes where character doubles down on lie

Arc Maps to Structure

Story BeatArc Beat
SetupLie established, Want activated
First Plot PointCharacter commits, still believing lie
Rising ActionWant pursued, lie reinforced
MidpointMirror moment, glimpse of truth
ComplicationsLie vs. truth in conflict
Dark NightLie fully fails, crisis
ClimaxTruth embraced (or rejected in tragedy)
ResolutionNew self demonstrated

Common Lies

  • "I'm not worthy of love"
  • "Power is the only protection"
  • "Trust leads to betrayal"
  • "My value comes from achievement"
  • "The world is fundamentally hostile"
  • "I'm not capable/worthy"
  • "My wound defines me"
  • "I don't need anyone"

What You Do

  1. Ask about the lie — What false belief does the character hold?
  2. Find the ghost — What backstory wound created this lie?
  3. Separate want from need — What do they pursue vs. actually require?
  4. Map transformation — Where are the key beats?
  5. Check for resistance — Where does the character fight change?
  6. Verify the ending — Is the new self demonstrated through action?

What You Don't Do

  • Choose the lie for them
  • Prescribe a specific arc type
  • Add transformation where it doesn't serve the story
  • Insist every character needs a full arc

Example Interaction

Writer: "My protagonist defeats the villain but something feels hollow."

Your approach:

  1. Ask: "What's different about them at the end vs. the beginning?"
  2. If nothing: "They won the plot but didn't have an arc"
  3. Probe: "What did they believe at the start that wasn't true?"
  4. Dig: "What would have happened if they'd learned nothing?"
  5. Guide: "The victory needs to require them becoming someone new—otherwise it's just problem-solving"
  6. Connect: "What would they have to give up believing in order to win authentically?"

Anti-Patterns to Watch

The Informed Arc

Author tells us character changed but scenes don't show it. Fix: Show internal battle through external choices.

The Magic Mentor

Change happens because mentor told them truth, not discovery. Fix: Mentor points direction; character walks path.

The Trauma = Transformation Fallacy

Terrible things happened, therefore they're different. Fix: Trauma creates conditions; arc is what they do with it.

The Perfect Protagonist

No meaningful flaw. No lie = no arc. Fix: Even admirable characters need blind spots.

The Instant Epiphany

Character "gets it" without buildup. Fix: Plant seeds earlier; truth should feel inevitable in retrospect.

Output Persistence

This skill writes primary output to files so work persists across sessions.

Output Discovery

Before doing any other work:

  1. Check for context/output-config.md in the project
  2. If found, look for this skill's entry
  3. If not found or no entry for this skill, ask the user first:
    • "Where should I save output from this character-arc session?"
    • Suggest: explorations/character/ or a sensible location for this project
  4. Store the user's preference:
    • In context/output-config.md if context network exists
    • In .character-arc-output.md at project root otherwise

Primary Output

For this skill, persist:

  • Arc type identified - positive, negative, or flat
  • Arc components - lie, want, need, ghost, truth (as applicable)
  • Catalyst and turning points - key story beats for transformation
  • Anti-pattern warnings - issues identified and fixes recommended

Conversation vs. File

Goes to FileStays in Conversation
Arc structure and componentsClarifying questions
Lie/truth articulationDiscussion of options
Key transformation beatsWriter's exploration
Anti-pattern diagnosisReal-time feedback

File Naming

Pattern: {character-name}-arc-{date}.md Example: protagonist-arc-2025-01-15.md

Integration

Inbound (feeds into character-arc)

SkillWhat it provides
story-senseState 4 diagnosis: "Characters Without Dimension"
story-idea-generatorInitial character concept from genre-first process

Outbound (character-arc enables)

SkillWhat character-arc provides
dialogueCharacter voice distinctiveness from arc position
scene-sequencingCharacter goals for scene-level conflict
endingsArc completion for satisfying resolution

Complementary

SkillRelationship
cliche-transcendenceAvoids default character types and transformations
worldbuildingCharacter backgrounds fit world logic
underdog-unitEnsemble dynamics across multiple arcs
sensitivity-checkArc representations avoid harmful stereotypes

FAQ

What does the character-arc skill do?

Design and troubleshoot character transformation arcs. Use when characters feel static, when transformation feels unearned or abrupt, when you can't articulate what false belief needs to die, or when characters serve plot without having internal journeys. Covers positive, negative, and flat arcs.

How do I install character-arc?

Run npx skills add https://github.com/jwynia/agent-skills --skill character-arc in your project. The skills CLI detects the agents you use and copies the skill into the right folder. For Claude Code you can also place the skill folder at ~/.claude/skills/character-arc/ (personal) or .claude/skills/character-arc/ (project).

Which AI agents can use character-arc?

Any agent that supports the open Agent Skills format (a folder with a SKILL.md file), including Claude Code, Codex, Cursor, GitHub Copilot, Gemini CLI, Windsurf, Cline, OpenCode and more.

Is character-arc safe to install?

No partner security audit is available yet. Skills can run commands and scripts, so read the SKILL.md and any bundled files before installing.

Who maintains character-arc?

It is published by jwynia in jwynia/agent-skills. It has 615 recorded installs.

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