polyviz

polyviz is a plugin for Claude Code from cognitive-fab/polygraph. Its manifest loads nothing; the 1 skill, 1 command, 1 agent it bundles cost 173 tokens per session together, scanned A, original, Apache-2.0.

A deterministic diagram renderer for Polygraph artifacts, which are files describing a state machine, its rules, failures, or compatibility results. It produces branded SVG diagrams and can optionally produce PNG images.

In plain words
What is it for?
Use it to render state-machine graphs, invariants, failure counterexamples, and version-compatibility results. It can read a visualization JSON file or a Polygraph artifact directory.
Why use it?
It turns verification results into repeatable visual diagrams without making another model request. The same inputs produce the same output, making generated images easier to compare and review.

Plugin for Claude Code

Written for Claude Code: a Claude Code plugin manifest.

Good fit Use it to render state-machine graphs, invariants, failure counterexamples, and version-compatibility results. It can read a visualization JSON file or a Polygraph artifact directory.

Compare 6 plugins from other repositories ↓
Install in Claude Code
/plugin marketplace add cognitive-fab/polygraph
/plugin install polyviz
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/cognitive-fab/polygraph

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 polyviz

README.md
[![agentmods](https://agentmods.dev/badge/plugins/cognitive-fab/polygraph/polyviz/github.svg)](https://agentmods.dev/plugins/cognitive-fab/polygraph/polyviz)
Your own site
<a href="https://agentmods.dev/plugins/cognitive-fab/polygraph/polyviz"><img src="https://agentmods.dev/badge/plugins/cognitive-fab/polygraph/polyviz/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 polyviz

Your own site · 80×15
<a href="https://agentmods.dev/plugins/cognitive-fab/polygraph/polyviz"><img src="https://agentmods.dev/badge/plugins/cognitive-fab/polygraph/polyviz.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, 1 command, 1 agent cost 173 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

polyviz 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.

polyviz/.claude-plugin/plugin.json · 25 lines

What it actually says

{
  "name": "polyviz",
  "displayName": "polyviz",
  "version": "0.1.0",
  "description": "A deterministic, artifact-derived diagram renderer for Polygraph. Turns the artifacts the suite already produces — the state machine, the invariants, the counterexample, the polyvers compat verdict — into a fixed catalog of clean, brand-consistent SVGs (optional PNG). Same inputs → byte-identical output; no model call at render time. Renders from a viz-model JSON or straight from a Polygraph/polyvers artifacts directory (adapters derive the machine graph by bounded BFS over the module, read the invariants, resolve a failing findings.json to its counterexample trace, and map compat-report.json). Optional runtime components: the state-machine graph needs elkjs and PNG needs @resvg/resvg-js (both optionalDependencies, loaded lazily); the pure viz-model → SVG path needs neither and executes no user code. Deriving the machine graph from a real run does execute the target module (bounded reachability).",
  "author": {
    "name": "jdubray",
    "url": "https://github.com/jdubray"
  },
  "homepage": "https://github.com/cognitive-fab/polygraph",
  "repository": "https://github.com/cognitive-fab/polygraph",
  "license": "Apache-2.0",
  "keywords": [
    "visualization",
    "diagram",
    "svg",
    "state-machine",
    "verification",
    "polygraph",
    "polyvers",
    "deterministic",
    "counterexample"
  ]
}
Contents

What it installs

The manifest is a name and a version. 1 skill, 1 command, 1 agent travel with it, and installing the plugin installs all of them — 173 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. 1mo ago First seen · 25 lines scan A 62dd7fa32e0f

Subscribe to this mod's changes

polyviz is a plugin published in the GitHub repository cognitive-fab/polygraph (14 stars, last pushed 1mo ago), 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 2026-08-31.

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