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fusion-developer-app

fusion-developer-app is a skill for Claude Code, Codex from equinor/fusion-skills. It costs 94 tokens per session (2,797 once invoked), scanned A, original, MIT.

A development guide for Fusion Framework React applications, including their components, pages, hooks, services, settings, integrations, and tests. React is a JavaScript library for building user interfaces, and Fusion Framework is the application framework this guide targets.

In plain words
What is it for?
Use it when adding features, routes, data fetching, API connections, app settings, bookmarks, analytics, feature flags, charts, people pickers, or tests in a Fusion React app.
Why use it?
It helps developers choose the framework's established patterns and create the test-time mocks needed to verify integrations.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

not rated 1repo changed yesterday A scan Socket: passSnyk: pass 94 tokens original MIT

Good fit Use it when adding features, routes, data fetching, API connections, app settings, bookmarks, analytics, feature flags, charts, people pickers, or tests in a Fusion React app.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/equinor/fusion-skills/fusion-developer-app
View source ↗ equinor/fusion-skills
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-developer-app
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-developer-app

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

Your own site · 80×15
<a href="https://agentmods.dev/skills/equinor/fusion-skills/fusion-developer-app"><img src="https://agentmods.dev/badge/skills/equinor/fusion-skills/fusion-developer-app.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 94 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,797 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 $0.00094 $0.02797
Opus 5 $0.00047 $0.01399
Sonnet 5 $0.00019 $0.00559
Haiku 4.5 $0.00009 $0.00280

Measured yesterday against content hash 191b5c5db30d, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

fusion-developer-app 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 yesterday.

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-developer-app/SKILL.md · 233 lines

How it starts

The opening of the file, as written. The whole thing — 233 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Fusion App Development

When to use

Use this skill when developing features, components, hooks, services, or types for a Fusion Framework React application.

Typical triggers:

  • "Add a component / hook / service / page for ..."
  • "Wire up the API"
  • "Configure a Fusion module"
  • "Which Fusion Framework hook / package should this app use?"
  • "Persist this preference as an app setting"
  • "Add bookmark / analytics / feature flag support"
  • "Add a chart / people picker / person column to AG Grid"
  • "How do I write a custom Fusion Framework module?"
  • "Should this be a Fusion module or a React context?"
  • "Write tests for this Fusion component / hook / route"
  • "Mock auth, context, feature flags, or HTTP in this test"

Implicit triggers:

  • Building in src/
  • References Fusion Framework modules, EDS, @equinor/fusion-react-*, or styled-components
  • References app settings, bookmarks, analytics, app.config.ts
  • Adding route, page, or data-fetching layer
  • Adding or updating *.test.ts / *.test.tsx, vitest.config.ts, or Fusion test fixtures
  • References charting: @equinor/fusion-framework-react-ag-charts, chart.js, react-chartjs-2

When not to use

Do not use this skill for:

  • Issue authoring/triage → fusion-issue-authoring
  • Skill authoring → fusion-skill-authoring
  • Backend/service changes (separate repo)
  • CI/CD or deployment config
  • Architecture docs (use ADR template)

For Fusion Framework package ownership, hook behavior, or example discovery → use fusion-research first.

Required inputs

Mandatory

  • What to build: feature, component, hook, or service description
  • Where it fits: layer (component, hook, service, type) and parent/sibling context

For ambiguous requests, consult assets/follow-up-questions.md before implementing.

Conditional

  • API endpoint details when the feature involves data fetching
  • Design/layout specifics when building visual components
  • Fusion module name when extending module configuration
  • Whether state should persist per-user, be shareable via bookmark, or stay runtime-only
  • Expected test layer: pure logic, hook, component, route, complete app, or module graph
  • External boundaries tests must seed: auth, context, services, feature flags, bookmarks, or HTTP

Read the full file on GitHub · 233 lines

Files

What ships with it

34 files beside SKILL.md 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. yesterday Changed 191b5c5db30d
  2. 8d ago First seen · 233 lines · 94 tokens per session scan A 60d1e7a43faf

Subscribe to this mod's changes

fusion-developer-app is a skill published in the GitHub repository equinor/fusion-skills (1 stars, last pushed yesterday), licensed MIT. It adds 94 tokens to every session and 2,797 once invoked, about $0.0005 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 2026-08-31.

FrontendReactTesting
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