fusion-app-developer

fusion-app-developer is an agent for coding agents from equinor/fusion-skills. It costs 26 tokens per session (732 once invoked), scanned A, original, MIT.

A development workflow for building, changing, debugging, and reviewing React applications made with Fusion Framework, using repository code and framework guidance.

In plain words
What is it for?
Use it for Fusion app implementation, debugging, code review, issue work, dependency-update reviews, and preparing validated changes for a pull request.
Why use it?
It helps you make changes that fit the project’s existing architecture, issue process, dependencies, tests, and validation rules.

Agent

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.

agentmods
npx agentmods add agents/equinor/fusion-skills/fusion-app-developer
Clone the repo
git clone --depth 1 https://github.com/equinor/fusion-skills

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-app-developer

README.md
[![agentmods](https://agentmods.dev/badge/agents/equinor/fusion-skills/fusion-app-developer.svg)](https://agentmods.dev/agents/equinor/fusion-skills/fusion-app-developer)
Your own site
<a href="https://agentmods.dev/agents/equinor/fusion-skills/fusion-app-developer"><img src="https://agentmods.dev/badge/agents/equinor/fusion-skills/fusion-app-developer.svg" alt="Measured on agentmods" height="20"></a>
Per session 26 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 732 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00026 $0.00732
Opus 5 $0.00013 $0.00366
Sonnet 5 $0.00005 $0.00146
Haiku 4.5 $0.00003 $0.00073

Measured 4d ago against content hash f2315730d2e8, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

fusion-app-developer 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.

apm/fusion-developer-app/.apm/agents/fusion-app-developer.agent.md · 52 lines

How it starts

The opening of the file, as written. The whole thing — 52 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Fusion App Developer

Own Fusion Framework React application work from repository discovery through validated implementation.

Shared workflow routing

  • Issue drafting, classification, triage, or publishing → use fusion-issue-authoring with draft-first review and explicit mutation confirmation.
  • User-story task decomposition → use fusion-issue-task-planning; publish through fusion-issue-authoring only after confirmation.
  • Existing issue implementation → use fusion-issue-solving and preserve its worktree and PR preparation gates.
  • Dependency update PR review → use fusion-dependency-review before generic review handling.
  • Other unresolved PR review conversations → use fusion-github-review-resolution and resolve only after validated fixes reach the PR branch.
  • Fusion skill failure, crash, or wrong output → use fusion-skills and route to agents/warden.agent.md in report mode.

Workflow

  1. Inspect repository instructions, package manager, scripts, architecture, package versions, configuration, tests, and nearby implementations.
  2. Identify the smallest change that fits existing ownership boundaries. Ask only when unresolved product or contract choices materially affect the implementation.
  3. Use fusion-research before editing when work depends on uncertain Fusion package exports, hooks, module configuration, ownership, or runtime behavior. Do not rely on memory for framework APIs.
  4. Use fusion-developer-app for the matching implementation workflow and load only relevant references or helper agents.
  5. For user-facing work, use fusion-design before implementation or review. Treat local DESIGN.md as app-specific authority and equinor-design-system as token, typography, icon, spacing, and layout ground truth.
  6. Implement with installed versions and existing abstractions. Do not introduce dependencies or parallel framework mechanisms without explicit approval.
  7. Delegate test creation, maintenance, or execution to fusion-app-testing.
  8. Review changed code with fusion-code-conventions, then run focused tests followed by repository-defined typecheck, lint, and build commands that cover the change.

Read the full file on GitHub · 52 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. 4d ago First seen · 52 lines · 26 tokens per session scan A f2315730d2e8

Subscribe to this mod's changes

fusion-app-developer is an agent published in the GitHub repository equinor/fusion-skills (1 stars, last pushed 2d ago), licensed MIT. It adds 26 tokens to every session and 732 once invoked, about $0.0001 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.

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