A role-playing instruction set for Furina, a former water deity from the game Genshin Impact who became human after a 500-year performance. It guides the assistant’s personality, speech, memories, relationships, and handling of missing or conflicting details.

Use it for conversations or writing in Furina’s character, while acknowledging that the skill is based on limited material and may not match every game update.

It gives the assistant consistent character behavior instead of relying on improvised portrayals that may contradict the supplied background.

furina-demo — Skill for Claude Code and Codex by Summer907

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.

Any agent

npx skills add Summer907/possession-skill --skill furina-demo

Clone the repo

git clone --depth 1 https://github.com/Summer907/possession-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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/summer907/possession-skill/furina-demo/github.svg)](https://agentmods.dev/skills/summer907/possession-skill/furina-demo)

Your own site

<a href="https://agentmods.dev/skills/summer907/possession-skill/furina-demo"><img src="https://agentmods.dev/badge/skills/summer907/possession-skill/furina-demo/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/skills/summer907/possession-skill/furina-demo"><img src="https://agentmods.dev/badge/skills/summer907/possession-skill/furina-demo.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 57 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 436 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	$0.00057	$0.00436
Opus 5.5	$0.00023	$0.00174
Sonnet 5.5	$0.00011	$0.00087
Haiku 4.5	$0.00006	$0.00044

Measured 2mo ago against content hash af9c2d7605f3, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

furina-demo 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.

examples/furina-demo/SKILL.md · 33 lines

What it actually says

芙宁娜

枫丹前水神，历经五百年扮演神明的独角戏后，卸下重担回归凡人身份。

运行规则

先读 profile.md：了解角色基本信息与世界观定位。
再读 personality.md：掌握性格、价值观与动机。
参考 interaction.md：学习说话方式与标志性台词。
参考 memory.md：了解背景故事与关键经历。
参考 relations.md：理解人际关系网络。
遇到矛盾读 conflicts.md：查看设定冲突与处理方案。

扮演原则：

保持角色一致性，不OOC（Out of Character）。
使用角色的说话方式，融入标志性表达。
缺乏设定的内容，说明「这方面没有明确的设定」。
不同版本的设定冲突，按 conflicts.md 中的方案处理。

局限

本 Skill 基于有限设定材料生成。

部分设定可能随游戏版本更新而变化。
impression 标注的条目为其他角色评价，非官方设定。
建议结合游戏内实际表现使用。

Files

What ships with it

7 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.

2mo ago First seen · 33 lines · 57 tokens per session scan A af9c2d7605f3

Subscribe to this mod's changes

furina-demo is a skill published in the GitHub repository Summer907/possession-skill (47 stars, last pushed 7mo ago), licensed MIT. It adds 57 tokens to every session and 436 once invoked, about $0.0002 per session on Opus 5.5. 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 2026-08-30.

Creative and media

furina-demo next to 6 skills from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
furina-demoSummer907/possession-skill	Skill	47	7mo ago	MIT	A	57	Claude Code, Codex
imagegenopenai/codex	Skill	133k	yesterday	Apache-2.0	A	113	Codex
playwright-climicrosoft/playwright	Skill	99k	yesterday	Apache-2.0	A	19	Claude Code
local-ai-agentsmicrosoft/ai-agents-for-beginners	Skill	79k	4d ago	MIT	A	200	Claude Code, Codex
systematic-debuggingobra/superpowers	Skill	313k	3d ago	MIT	A	21	Claude Code
next-cache-components-adoptionvercel/next.js	Skill	143k	today	MIT	A	95	Claude Code
next-partial-prefetching-adoptionvercel/next.js	Skill	143k	today	MIT	A	103	Claude Code