sem: Settings file for Claude Code

.claude/settings.json

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

A settings file that runs a shell command before the agent uses its text-search tool.

In plain words
What is it for?
It is for configuring a pre-use hook for the Grep tool in projects using Claude.
Why use it?
It adds a project-specific check before searches are performed, although the input does not explain what the check verifies.

Settings file for Claude Code

Written for Claude Code: ${CLAUDE_PROJECT_DIR} variable.

This is Ataraxy-Labs/sem's own configuration. It tells Claude Code how to work on sem 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 sem 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.

About the project

sem is a Git-based semantic version control tool that compares changes to code entities such as functions, methods, and classes instead of individual lines. It helps developers and coding agents review changes, trace responsibility, and assess their impact across repositories. Catalogue add-ons provide agent integrations and workflows for operating sem.

Ataraxy-Labs/sem · 3,411 stars · on GitHub · ataraxy-labs.github.io

Reuse

Borrowing it

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

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 sem

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

Your own site · 80×15
<a href="https://agentmods.dev/settings/ataraxy-labs/sem/settings"><img src="https://agentmods.dev/badge/settings/ataraxy-labs/sem/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

sem 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 · 16 lines

What it actually says

{
  "hooks": {
    "PreToolUse": [
      {
        "matcher": "Grep",
        "hooks": [
          {
            "type": "command",
            "command": "${CLAUDE_PROJECT_DIR}/.claude/hooks/sem-first.sh"
          }
        ]
      }
    ]
  }
}
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 · 16 lines scan A 7af0fc9aefb1

Subscribe to this mod's changes

sem is a settings file published in the GitHub repository Ataraxy-Labs/sem (3,411 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 2026-08-30.