character-continuity

character-continuity is a skill for Claude Code, Codex from Nagacash/character-continuity-skill. It costs 92 tokens per session (3,046 once invoked), scanned A, original, MIT.

A continuity guide for keeping a recurring character's appearance consistent across shots made with AI video tools. It treats the approved character reference and related assets as fixed production material.

In plain words
What is it for?
Used when planning or producing films, series, adverts, or music videos with recurring characters to create a reference image, lock visual details, and diagnose identity drift.
Why use it?
AI video generation can change a character's face, proportions, or other details from shot to shot, making the person appear inconsistent.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add skills/nagacash/character-continuity-skill/character-continuity
Any agent
npx skills add Nagacash/character-continuity-skill --skill character-continuity
Clone the repo
git clone --depth 1 https://github.com/Nagacash/character-continuity-skill

Made for: Claude Code, Codex.

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.

agentmods badge for character-continuity

README.md
[![agentmods](https://agentmods.dev/badge/skills/nagacash/character-continuity-skill/character-continuity.svg)](https://agentmods.dev/skills/nagacash/character-continuity-skill/character-continuity)
Your own site
<a href="https://agentmods.dev/skills/nagacash/character-continuity-skill/character-continuity"><img src="https://agentmods.dev/badge/skills/nagacash/character-continuity-skill/character-continuity.svg" alt="Measured on agentmods" height="20"></a>
Per session 92 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,046 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00092 $0.03046
Opus 5 $0.00046 $0.01523
Sonnet 5 $0.00018 $0.00609
Haiku 4.5 $0.00009 $0.00305

Measured 5d ago against content hash 159c74b67d71, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

character-continuity 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 5d ago.

The scan reads SKILL.md. This mod also ships 1 executable file (scripts/contact-sheet.sh), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

skills/character-continuity/SKILL.md · 223 lines

How it starts

The opening of the file, as written. The whole thing — 223 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Character & Continuity Bible

Two principles

Consistency is a workflow. No current tool guarantees frame-identical continuity; every model is probabilistic. What separates professional output from amateur output is whether the production locked its assets before generating, and changed one variable at a time afterwards.

Invariance beats fidelity. A slightly imperfect face that never changes will pass. A better face that shifts between shots will not. Cast something you can hold.


1. Cast before you shoot

Casting produces four assets per character, all created before a single shot exists.

The canon frame

One approved master image. Once approved, never regenerate it. Everything else descends from it.

  • Front-facing, neutral expression, mouth closed, eyes to camera
  • Even, soft, neutral lighting. No dramatic key, no colour cast — dramatic light bakes shadow into the identity and poisons every downstream shot
  • Clean background, minimum 1024px short side [PRACTITIONER: a working floor, not a documented threshold]
  • Head and shoulders with headroom, not a tight crop. Models need the jaw-to-shoulder relationship

For an invented character, generate 10–20 candidates and cast deliberately [PRACTITIONER: the number is judgement, not measurement — cast until one is distinctive, however many that takes]. Judge on distinctiveness, not beauty. A face with a specific feature — a broken nose, heavy brows, deep-set eyes, a gap tooth — appears to hold better than a conventionally attractive average face, which regresses toward the model's mean face under pressure. [PRACTITIONER: consistent with how regression-to-mean works, but I know of no formal measurement. It costs nothing to test on your own material.]

The turnaround set

One image per angle: front, 3/4 left, 3/4 right, profile left, profile right, back. Add a full-length T-pose for costume work.

Never combine angles into one composite sheet. Composite sheets cause bleed between panels. Every turnaround is generated from the canon frame, not prompted fresh.

Read the full file on GitHub · 223 lines

Files

What ships with it

8 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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.

  1. 5d ago First seen · 223 lines · 92 tokens per session scan A 159c74b67d71

Subscribe to this mod's changes

character-continuity is a skill published in the GitHub repository Nagacash/character-continuity-skill (1 stars, last pushed 26d ago), licensed MIT. It adds 92 tokens to every session and 3,046 once invoked, about $0.0005 per session on Opus 5. 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 2026-08-31.

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