fusion-opus4.8

fusion-opus4.8 is a command for Claude Code from duolahypercho/fusion-fable. It costs 31 tokens per session (233 once invoked), scanned A, original, MIT.

A command that runs two independent Opus 4.8 analyses and has another Opus 4.8 run judge them before producing a final answer.

In plain words
What is it for?
Use it when a task benefits from multiple analyses followed by a structured review of their conclusions.
Why use it?
It helps compare independent answers and identify agreement, disagreements, missing coverage, and blind spots.

Command for Claude Code

Written for Claude Code: argument-hint in frontmatter. Also seen: mentions subagents; mentions Codex.

Good fit Use it when a task benefits from multiple analyses followed by a structured review of their conclusions.

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Install with agentmods
npx agentmods add commands/duolahypercho/fusion-fable/fusion-opus4.8
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/duolahypercho/fusion-fable

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 fusion-opus4.8

README.md
[![agentmods](https://agentmods.dev/badge/commands/duolahypercho/fusion-fable/fusion-opus4.8/github.svg)](https://agentmods.dev/commands/duolahypercho/fusion-fable/fusion-opus4.8)
Your own site
<a href="https://agentmods.dev/commands/duolahypercho/fusion-fable/fusion-opus4.8"><img src="https://agentmods.dev/badge/commands/duolahypercho/fusion-fable/fusion-opus4.8/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 fusion-opus4.8

Your own site · 80×15
<a href="https://agentmods.dev/commands/duolahypercho/fusion-fable/fusion-opus4.8"><img src="https://agentmods.dev/badge/commands/duolahypercho/fusion-fable/fusion-opus4.8.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 31 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 233 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 $0.00031 $0.00233
Opus 5 $0.00015 $0.00117
Sonnet 5 $0.00006 $0.00047
Haiku 4.5 $0.00003 $0.00023

Measured 12d ago against content hash 73c78d222659, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

fusion-opus4.8 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 12d 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.

commands/fusion-opus4.8.md · 16 lines

What it actually says

Invoke the fusion skill on the task below, forcing the opus4.8-4.8 panel: run the same prompt twice as TWO independent Opus 4.8 panelists (Agent subagents, in parallel, neither seeing the other's work) → Opus 4.8 judges both answers → Opus writes the final answer grounded in the analysis.

Follow the skill's SKILL.md exactly (fan out in parallel → judge → grounded final answer) and present the standard sections (Consensus / Contradictions / Partial coverage / Unique insights / Blind spots / Final answer). Do NOT add a GPT-5.5 or Gemini panelist, even if codex/gemini are installed — this command is pinned to the pure-Opus panel. Do not assign the two runs any "lenses" — pass the task verbatim to both.

Task: $ARGUMENTS

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. 12d ago First seen · 16 lines · 31 tokens per session scan A 73c78d222659

Subscribe to this mod's changes

fusion-opus4.8 is a command published in the GitHub repository duolahypercho/fusion-fable (472 stars, last pushed 1mo ago), licensed MIT. It adds 31 tokens to every session and 233 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.