ultrathink

ultrathink is a command for Claude Code from rysweet/amplihack. It costs 35 tokens per session (300 once invoked), scanned A, original, no licence file.

A deprecated command that redirects to the development orchestrator, which coordinates development work.

In plain words
What is it for?
Use the newer development command for current work; this command is mainly for compatibility.
Why use it?
It remains available so older workflows using this command continue to work.

Command for Claude Code

Written for Claude Code: installed under .claude/.

Part of the amplihack plugin — 101 skills, 45 commands, 1 agent, 6 hooks shipped together

Good fit Use the newer development command for current work; this command is mainly…

Compare 6 commands from other repositories ↓
Install with agentmods
npx agentmods add commands/rysweet/amplihack/ultrathink
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/rysweet/amplihack

Made for: Claude Code.

Or install amplihack, the plugin that ships this one along with the rest of its 101 skills, 45 commands, 1 agent, 6 hooks.

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 ultrathink

README.md
[![agentmods](https://agentmods.dev/badge/commands/rysweet/amplihack/ultrathink.svg)](https://agentmods.dev/commands/rysweet/amplihack/ultrathink)
Your own site
<a href="https://agentmods.dev/commands/rysweet/amplihack/ultrathink"><img src="https://agentmods.dev/badge/commands/rysweet/amplihack/ultrathink.svg" alt="Measured on agentmods" height="20"></a>
Per session 35 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 300 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 unknown 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 $0.00035 $0.00300
Opus 5 $0.00017 $0.00150
Sonnet 5 $0.00007 $0.00060
Haiku 4.5 $0.00003 $0.00030

Measured 7d ago against content hash 1d0f149505db, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

ultrathink 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 7d 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.

.claude/commands/amplihack/ultrathink.md · 53 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

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. 7d ago First seen · 53 lines · 35 tokens per session scan A 1d0f149505db

Subscribe to this mod's changes

ultrathink is a command published in the GitHub repository rysweet/amplihack (77 stars, last pushed 1mo ago), with no licence file. It adds 35 tokens to every session and 300 once invoked, about $0.0002 per session on Opus 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 2026-08-30.