fusion-skill-authoring

fusion-skill-authoring is a skill for Claude Code, Codex from equinor/fusion-skills. It costs 84 tokens per session (3,168 once invoked), scanned A, original, MIT.

A skill-authoring tool for creating or improving reusable instructions for coding agents. It helps organize activation cues, supporting files, and review steps.

In plain words
What is it for?
Use it to create a new skill, refresh an existing one, improve its description, or decide which references and helper agents it needs.
Why use it?
It addresses skills that are difficult to discover, too broad, poorly structured, or missing useful supporting material.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: mentions subagents.

Good fit Use it to create a new skill, refresh an existing one, improve its description, or decide which references and helper agents it needs.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/equinor/fusion-skills/fusion-skill-authoring
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.

Any agent
npx skills add equinor/fusion-skills --skill fusion-skill-authoring
Clone the repo
git clone --depth 1 https://github.com/equinor/fusion-skills

Made for: Claude Code, Codex.

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-skill-authoring

README.md
[![agentmods](https://agentmods.dev/badge/skills/equinor/fusion-skills/fusion-skill-authoring/github.svg)](https://agentmods.dev/skills/equinor/fusion-skills/fusion-skill-authoring)
Your own site
<a href="https://agentmods.dev/skills/equinor/fusion-skills/fusion-skill-authoring"><img src="https://agentmods.dev/badge/skills/equinor/fusion-skills/fusion-skill-authoring/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-skill-authoring

Your own site · 80×15
<a href="https://agentmods.dev/skills/equinor/fusion-skills/fusion-skill-authoring"><img src="https://agentmods.dev/badge/skills/equinor/fusion-skills/fusion-skill-authoring.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 84 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,168 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. Third-party audits
  • Socket pass 9 May 2026
  • Snyk pass 9 May 2026
How audits are shown
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 $0.00084 $0.03168
Opus 5 $0.00042 $0.01584
Sonnet 5 $0.00017 $0.00634
Haiku 4.5 $0.00008 $0.00317

Measured 3d ago against content hash bce751ce62ba, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

fusion-skill-authoring 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 3d 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.

skills/fusion-skill-authoring/SKILL.md · 301 lines

How it starts

The opening of the file, as written. The whole thing — 301 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Create or Modernize Skills

When to use

Activate when creating a new skill under skills/, or when an existing skill needs a material authoring refresh.

Typical triggers:

  • "Create a skill for ..."
  • "Scaffold skills/<name>/SKILL.md"
  • "Turn this workflow into a reusable skill"
  • "Improve this skill's metadata and activation cues"
  • "Make this skill easier to discover"
  • "Set up references/assets/helper agents for a skill"

Implicit triggers:

  • Recurring task keeps requiring the same instructions or safety boundaries
  • Existing skill is too vague, too long, poorly routed, or missing structure
  • User wants a reusable workflow package, not a one-off prompt

When not to use

  • Editing product or application code outside skills/
  • Tiny typo-only edits that don't need authoring workflow help
  • Requests better solved as docs, templates, or scripts without an installable skill
  • Large unrelated repo refactors
  • Destructive commands or hidden network automation

Required inputs

If required inputs are missing, ask concise targeted questions first. Use assets/follow-up-questions.md as the default question bank.

Mandatory

Collect before drafting:

  • Whether this is a new skill, update, or not a skill at all
  • Target repo path and intended skill directory
  • Base skill name in kebab-case before any prefix/namespace
  • Final skill name in kebab-case; default to custom-<base-skill-name> unless repo has different convention
  • One-sentence purpose and user outcome
  • Concrete activation cues: trigger phrases, domain keywords, anti-triggers
  • Expected output: files, commands, or decisions the skill produces
  • Safety boundaries and approval requirements

Conditional

Collect when relevant:

  • Naming prefix, namespace, or catalog convention
  • Skill category: capability uplift or workflow/encoded preference
  • Composition: standalone, orchestrator, or subordinate
  • Repository-specific ownership, lifecycle, or release policy
  • Orchestrator relationship: metadata.orchestrator for subordinates, metadata.skills for orchestrators
  • Target status (active, experimental, deprecated, archived)
  • compatibility text when skill has real environment constraints
  • MCP requirements (metadata.mcp.required / metadata.mcp.suggested)
  • Whether helper agents in agents/ would sharpen scoping, review, or trigger tuning
  • Whether deterministic automation justifies a scripts/ directory

Read the full file on GitHub · 301 lines

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. 3d ago Changed bce751ce62ba
  2. 8d ago First seen · 301 lines · 84 tokens per session scan A ab1d77f2433b

Subscribe to this mod's changes

fusion-skill-authoring is a skill published in the GitHub repository equinor/fusion-skills (1 stars, last pushed 2d ago), licensed MIT. It adds 84 tokens to every session and 3,168 once invoked, about $0.0004 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 2026-09-03.

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