nestor

nestor is a plugin for Claude Code from dkushnikov/nestor-plugin. Its manifest loads nothing; the 1 skill it bundles cost 53 tokens per session together, scanned A, original, MIT.

A decision-support tool that asks several advanced AI models for independent opinions and combines their judgments while showing disagreements.

In plain words
What is it for?
Use it for third-opinion consultations, adversarial review, and decisions where differing model opinions are useful.
Why use it?
It provides additional viewpoints when a question needs challenge, comparison, or careful deliberation.

Plugin for Claude Code

Written for Claude Code: a Claude Code plugin manifest.

Good fit Use it for third-opinion consultations, adversarial review, and decisions where differing model opinions are useful.

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Install in Claude Code
/plugin marketplace add dkushnikov/nestor-plugin
/plugin install nestor
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/dkushnikov/nestor-plugin

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 nestor

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

Your own site · 80×15
<a href="https://agentmods.dev/plugins/dkushnikov/nestor-plugin/nestor"><img src="https://agentmods.dev/badge/plugins/dkushnikov/nestor-plugin/nestor.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 cost 53 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

nestor 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 6d 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/nestor/.claude-plugin/plugin.json · 21 lines

What it actually says

{
  "name": "nestor",
  "version": "0.7.7",
  "description": "Deliberation counsellor that convenes a council of frontier AI models (via pal MCP) for high-stakes decisions, exploratory questions, or when a third opinion is needed. Routes questions to adversarial (red-team) or deliberative (anonymised peer-critique) mode automatically, based on question shape.",
  "author": {
    "name": "Dmitry Kushnikov",
    "email": "[email protected]"
  },
  "homepage": "https://github.com/dkushnikov/nestor-plugin",
  "repository": "https://github.com/dkushnikov/nestor-plugin",
  "license": "MIT",
  "keywords": [
    "deliberation",
    "consultation",
    "council",
    "multi-model",
    "decision-support",
    "openrouter"
  ]
}
Contents

What it installs

The manifest is a name and a version. 1 skill travel with it, and installing the plugin installs all of them — 53 tokens a session between them. Each is measured on its own page, and each can be installed alone.

Files

What ships with it

1 file beside plugin.json in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. 6d ago Changed · +14 lines a028f4b7f449
  2. 2mo ago First seen · 7 lines scan A 2fc2b19b7af3

Subscribe to this mod's changes

nestor is a plugin published in the GitHub repository dkushnikov/nestor-plugin (2 stars, last pushed 6d 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 2026-09-03.