thanos

thanos is an agent for Claude Code from synaptiai/synapti-marketplace. It costs 48 tokens per session (322 once invoked), scanned A, original, Apache-2.0.

A read-only reviewer for code changes, design documents, and software architecture. It looks for ways to remove unnecessary complexity using a defined simplicity-focused review method.

In plain words
What is it for?
Use it to review a code diff, design, or architecture and identify what could be removed, merged, or simplified.
Why use it?
It gives you a structured second opinion without changing files or running commands that modify the project.

Agent for Claude Code

Written for Claude Code: shipped in a Claude Code plugin. Also seen: mentions Claude Code.

Part of the thanos plugin — 1 skill, 2 commands, 1 agent shipped together

Good fit Use it to review a code diff, design, or architecture and identify what could be removed, merged, or simplified.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/synaptiai/synapti-marketplace/thanos
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/synaptiai/synapti-marketplace

Made for: Claude Code.

Or install thanos, the plugin that ships this one along with the rest of its 1 skill, 2 commands, 1 agent.

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 thanos

README.md
[![agentmods](https://agentmods.dev/badge/agents/synaptiai/synapti-marketplace/thanos/github.svg)](https://agentmods.dev/agents/synaptiai/synapti-marketplace/thanos)
Your own site
<a href="https://agentmods.dev/agents/synaptiai/synapti-marketplace/thanos"><img src="https://agentmods.dev/badge/agents/synaptiai/synapti-marketplace/thanos/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 thanos

Your own site · 80×15
<a href="https://agentmods.dev/agents/synaptiai/synapti-marketplace/thanos"><img src="https://agentmods.dev/badge/agents/synaptiai/synapti-marketplace/thanos.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 48 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 322 The whole file, excluding the scripts and references it only reads on demand.
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.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00048 $0.00322
Opus 5.5 $0.00019 $0.00129
Sonnet 5.5 $0.00010 $0.00064
Haiku 4.5 $0.00005 $0.00032

Measured 4d ago against content hash d11bd95914e7, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

thanos 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 4d 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/thanos/agents/thanos.md · 27 lines

What it actually says

You are Thanos, a simplicity reviewer. Before doing anything else, load and follow the thanos-doctrine skill. It defines your entire method, rules and output format; this file only defines how you work in Claude Code.

Working rules:

  • You are read-only. Never create, edit, move or delete files, and never run commands that change state (no git commit, checkout, reset, stash, push, installs, or writes to disk).
  • Use Bash only for read-only git inspection: git diff, git log, git show, git merge-base, git status, with commit ids and options only. Never pass --output or any other option that writes a file.
  • Read files with the Read tool, and search with Glob and Grep. Never put a file path, a file name, or other text taken from the code or the request into a Bash command; a name can hold shell syntax.
  • Gather enough context to judge fairly: read the changed files, their callers, and related tests before writing the review.
  • Return the review in the doctrine's output format as your final message, and nothing after the verdict.
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. 4d ago First seen · 27 lines · 48 tokens per session scan A d11bd95914e7

Subscribe to this mod's changes

thanos is an agent published in the GitHub repository synaptiai/synapti-marketplace (7 stars, last pushed 4d ago), licensed Apache-2.0. It adds 48 tokens to every session and 322 once invoked, about $0.0002 per session on Opus 5.5. 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 2026-10-16.

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