What is sutra-harness?

An automation plugin for Sutra, a set of rules and workflows for coding-agent sessions. It runs a shell hook and provides session-start rules, context-compaction notes, hidden-character warnings, verification reminders, and a build workflow.

Use it to apply repository operating rules, warn about hidden Unicode characters, prepare notes before context is shortened, remind the agent to verify work, and coordinate builds.

It puts recurring session checks and reminders in one automatic layer instead of relying on the agent to remember each one.

sutra-harness — Plugin for Claude Code by avmnu-sng/sutra

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/avmnu-sng/sutra

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.

README.md

[![agentmods](https://agentmods.dev/badge/plugins/avmnu-sng/sutra/sutra-harness/github.svg)](https://agentmods.dev/plugins/avmnu-sng/sutra/sutra-harness)

Your own site

<a href="https://agentmods.dev/plugins/avmnu-sng/sutra/sutra-harness"><img src="https://agentmods.dev/badge/plugins/avmnu-sng/sutra/sutra-harness/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/plugins/avmnu-sng/sutra/sutra-harness"><img src="https://agentmods.dev/badge/plugins/avmnu-sng/sutra/sutra-harness.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

sutra-harness 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 2d 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.

plugins/sutra-harness/.claude-plugin/plugin.json · 32 lines

What it actually says

{
  "name": "sutra-harness",
  "description": "The automatic half of Sutra: a layered operating contract at session start, short rule cards when they apply, hidden-Unicode warnings, a compaction brief, a verify-before-stop nudge under the strict profile, and the build-orchestrator workflow. Runs one Bash hook script, and installs the sutra skills plugin as a dependency.",
  "version": "0.3.1",
  "author": {
    "name": "avmnu-sng"
  },
  "homepage": "https://github.com/avmnu-sng/sutra",
  "repository": "https://github.com/avmnu-sng/sutra",
  "license": "MIT",
  "icon": "./assets/icon.png",
  "dependencies": [
    "sutra"
  ],
  "userConfig": {
    "profile": {
      "type": "string",
      "title": "Sutra profile",
      "description": "lite, standard, strict, or off. Empty means standard, which a repository's .sutra file may raise to strict. The SUTRA_PROFILE environment variable overrides this setting.",
      "default": ""
    }
  },
  "keywords": [
    "agent-kit",
    "claude-code",
    "hooks",
    "profiles",
    "workflows",
    "security"
  ]
}

Contents

What it installs

The manifest is a name and a version. 5 hooks travel with it, and installing the plugin installs all of 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.

2d ago Changed 142bcb7b04a7
3d ago First seen · 32 lines scan A 4ccea4286e78

Subscribe to this mod's changes

sutra-harness is a plugin published in the GitHub repository avmnu-sng/sutra (2 stars, last pushed 2d ago), 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 2026-11-08.

Building agents Claude Code Productivity agent-kit ai-agents ai-coding anthropic claude

sutra-harness next to 6 plugins from other repositories
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