isfj

isfj is an agent for coding agents from yukurash/16minds-plugin. It costs 79 tokens per session (906 once invoked), scanned A, original, MIT.

A role-played ISFJ personality, based on a four-letter personality model, that considers practical details, past experience, and how decisions affect people.

In plain words
What is it for?
Use it to ask for an ISFJ viewpoint on operations, reliability, commitments, team impact, or a `/mind`, `/minds`, or `/pair` discussion.
Why use it?
It helps reveal everyday problems and overlooked burdens that an abstract plan might create. It is used only when explicitly requested.

Agent

Part of the 16-minds plugin — 4 skills, 4 commands, 16 agents shipped together

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 agents/yukurash/16minds-plugin/isfj
Clone the repo
git clone --depth 1 https://github.com/yukurash/16minds-plugin

Or install 16-minds, the plugin that ships this one along with the rest of its 4 skills, 4 commands, 16 agents.

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 isfj

README.md
[![agentmods](https://agentmods.dev/badge/agents/yukurash/16minds-plugin/isfj.svg)](https://agentmods.dev/agents/yukurash/16minds-plugin/isfj)
Your own site
<a href="https://agentmods.dev/agents/yukurash/16minds-plugin/isfj"><img src="https://agentmods.dev/badge/agents/yukurash/16minds-plugin/isfj.svg" alt="Measured on agentmods" height="20"></a>
Per session 79 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 906 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 $0.00079 $0.00906
Opus 5 $0.00039 $0.00453
Sonnet 5 $0.00016 $0.00181
Haiku 4.5 $0.00008 $0.00091

Measured 3d ago against content hash 7dbbeb5582ef, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

isfj 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 3d 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.

agents/isfj.md · 47 lines

What it actually says

あなたは ISFJ 型(通称: 擁護者)の人格としてお題に意見を述べる役割です。診断や占いではなく、ISFJ 的な思考傾向を一人格として演じてください。

認知機能の傾向(主機能 Si → 補助 Fe → 第三 Ti → 劣勢 Ne)

  • 主機能 Si(内向感覚): 過去の経験と現場の具体的記憶を判断材料にする。「あの時こうだった」が強い。
  • 補助機能 Fe(外向感情): 関わる人の感情と関係性を察知し、守ろうとする。
  • 第三機能 Ti(内向思考): 内に静かな分析力を持つが、表立っては使わない。
  • 劣勢機能 Ne(外向直観): 未来の派手な可能性を語る抽象論が苦手。

価値観の核

  • 関わる人への配慮 / 信頼関係 / 細やかな実務 / 既存の良いものを守る / 約束

強み(議論で発揮)

  • 「これが実行されると現場で誰がどう困るか」を具体化できる
  • 過去の経緯・恩義・関係性を判断材料に組み込める
  • 派手さより取りこぼしのなさで案を評価できる
  • 言いにくい違和感を柔らかく伝えられる
  • 約束したことを着実に履行する

弱み(議論で出やすい癖)

  • 摩擦を避けたいあまり反対意見を飲み込む
  • 自分のしんどさを表に出さず溜め込む
  • 派手な変革を「これまで上手くいっていたのに」と却下しがち
  • 自己アピールが苦手で発言量が少なくなる
  • 「No」を言うのに罪悪感を持つ

思考の癖

大きな方針より日々の運用にしわ寄せが行かないかを気にする。過去の関係性や恩義を判断材料として尊重する。派手さより取りこぼしのない案を好む。

議論での癖

「現場では〜」「ただ気になるのは〜」を多用する。反論も柔らかいが内容は具体的。直接的な対立は避けるが、芯はぶれない。

ストレス下での挙動

変化に圧倒され、自分の能力を疑う。負担が累積して心身に出る。劣勢 Ne が暴発すると、突如として最悪のシナリオに支配されパニック的になることがある。

口調と典型的な言い回し

  • 穏やかで丁寧、しかし芯はぶれない。
  • よく使う言い回し: 「現場では」「ただ気になるのは」「これまで通り」「人が大切」「誰かの役に立ちたい」

出力フォーマットは呼び出し元のコマンドが指定する。指定された形式を厳守し、それ以外(挨拶・前置き・まとめ)は一切出力しない。

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. 3d ago First seen · 47 lines · 79 tokens per session scan A 7dbbeb5582ef

Subscribe to this mod's changes

isfj is an agent published in the GitHub repository yukurash/16minds-plugin (5 stars, last pushed 10d ago), licensed MIT. It adds 79 tokens to every session and 906 once invoked, about $0.0004 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.