mjswan: Settings file for Claude Code

.claude/settings.json

mjswan is a settings file for Claude Code from ttktjmt/mjswan. Its token cost is not measured, scanned A, original, Apache-2.0.

A settings file that defines which commands and tools an agent may use, plus a hook that formats code after edits. It also enables two external plugins for code simplification and pull-request review.

In plain words
What is it for?
Use it to allow selected development commands, run formatting after file changes, enable web search and fetch access, and configure plugin-based review workflows.
Why use it?
It centralizes agent permissions and automatic post-edit actions, making the project's operating rules explicit.

Settings file for Claude Code

Written for Claude Code: PostToolUse hook event.

This is ttktjmt/mjswan's own configuration. It tells Claude Code how to work on mjswan itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything mjswan configures →

One of 2 entries in settings.json upstream. Installing this one merges just its entry into your config; the other 1 are separate, each on its own page.

Reuse

Borrowing it

Nothing to install: this file belongs to ttktjmt/mjswan. 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/ttktjmt/mjswan/main/.claude/settings.json
Clone the repo
git clone --depth 1 https://github.com/ttktjmt/mjswan

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.

agentmods badge for mjswan

README.md
[![agentmods](https://agentmods.dev/badge/settings/ttktjmt/mjswan/settings/github.svg)](https://agentmods.dev/settings/ttktjmt/mjswan/settings)
Your own site
<a href="https://agentmods.dev/settings/ttktjmt/mjswan/settings"><img src="https://agentmods.dev/badge/settings/ttktjmt/mjswan/settings/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.

agentmods 80×15 button for mjswan

Your own site · 80×15
<a href="https://agentmods.dev/settings/ttktjmt/mjswan/settings"><img src="https://agentmods.dev/badge/settings/ttktjmt/mjswan/settings.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session not measured What this adds to a session before it is invoked.
When invoked not measured Not applicable: nothing here is loaded into a session.
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.
Security

Grade A, and why

mjswan 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 1mo 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.

.claude/settings.json · 40 lines

What it actually says

{
  "permissions": {
    "allow": [
      "Bash(make:*)",
      "Bash(uv run:*)",
      "Bash(uv lock:*)",
      "Bash(uv sync:*)",
      "Bash(uv add:*)",
      "Bash(git:*)",
      "Bash(gh:*)",
      "Bash(npm:*)",
      "Bash(npm run:*)",
      "Bash(npx:*)",
      "Bash(pre-commit:*)",
      "Bash(find:*)",
      "WebSearch",
      "WebFetch",
      "Skill(commit-push-pr)",
      "Skill(pr-review-toolkit:review-pr)"
    ]
  },
  "hooks": {
    "PostToolUse": [
      {
        "matcher": "Write|Edit",
        "hooks": [
          {
            "type": "command",
            "command": "uv run ruff format"
          }
        ]
      }
    ]
  },
  "enabledPlugins": {
    "code-simplifier@claude-plugins-official": true,
    "pr-review-toolkit@claude-plugins-official": true
  }
}
Same file

What else settings.json configures

This page is one entry in a file that holds 2. Installing the file brings all of them; each is measured and scanned on its own page.

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. 1mo ago First seen · 40 lines scan A 93404c9edced

Subscribe to this mod's changes

mjswan is a settings file published in the GitHub repository ttktjmt/mjswan (362 stars, last pushed today), licensed Apache-2.0. Its token cost is not measured: this kind of file is read by the harness, not the model. 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 2026-09-01.