warrant

warrant is a plugin for Claude Code from s0fractal/warrant. Its manifest loads nothing; the 1 skill, 5 hooks it bundles cost 73 tokens per session together, scanned A, original, MIT.

A record-keeping tool that creates signed records of the permission choices made for an AI coding agent's tool calls. The records can be checked offline to confirm they have not been changed.

In plain words
What is it for?
Use it to audit an agent's actions and investigate why a tool call was refused or allowed. The records cover checks and consequential commands such as pushing, merging, publishing, or deleting.
Why use it?
It provides an account of which calls were denied, prompted for permission, or run without a prompt. It also recalls recent denials when a session starts.

Plugin for Claude Code

Written for Claude Code: a Claude Code plugin manifest. Also seen: mentions Claude Code.

Good fit Use it to audit an agent's actions and investigate why a tool call was refused or allowed. The records cover checks and consequential commands such as pushing, merging, publishing, or deleting.

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Install in Claude Code
/plugin marketplace add s0fractal/warrant
/plugin install warrant
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.

Clone the repo
git clone --depth 1 https://github.com/s0fractal/warrant

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 warrant

README.md
[![agentmods](https://agentmods.dev/badge/plugins/s0fractal/warrant/claude-code-plugin/github.svg)](https://agentmods.dev/plugins/s0fractal/warrant/claude-code-plugin)
Your own site
<a href="https://agentmods.dev/plugins/s0fractal/warrant/claude-code-plugin"><img src="https://agentmods.dev/badge/plugins/s0fractal/warrant/claude-code-plugin/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 warrant

Your own site · 80×15
<a href="https://agentmods.dev/plugins/s0fractal/warrant/claude-code-plugin"><img src="https://agentmods.dev/badge/plugins/s0fractal/warrant/claude-code-plugin.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 The manifest loads nothing itself; its 1 skill, 5 hooks cost 73 tokens a session between them.
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

warrant 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 today.

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.

integrations/claude-code-plugin/.claude-plugin/plugin.json · 12 lines

What it actually says

{
  "name": "warrant",
  "displayName": "Warrant decision witness",
  "version": "0.2.0",
  "description": "Signed, offline-verifiable records of the permission decisions Claude Code makes about your agent's tool calls: auto-mode denials, calls that were asked about and then ran, and checks and consequential commands that ran without a prompt. Recalls recent denials at session start.",
  "author": { "name": "s0fractal", "url": "https://github.com/s0fractal" },
  "homepage": "https://github.com/s0fractal/warrant/tree/master/integrations/claude-code-plugin",
  "repository": "https://github.com/s0fractal/warrant",
  "license": "MIT",
  "keywords": ["audit", "provenance", "permissions", "signatures", "agents"]
}
Contents

What it installs

The manifest is a name and a version. 1 skill, 5 hooks travel with it, and installing the plugin installs all of them — 73 tokens a session between them. Each is measured on its own page, and each can be installed alone.

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. today First seen · 12 lines scan A 969e84fe6892

Subscribe to this mod's changes

warrant is a plugin published in the GitHub repository s0fractal/warrant (5 stars, last pushed today), licensed MIT. 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 2026-10-17.