desktop

Development guidance for the Electron desktop shell around a web application. It covers native windows, preload code, menus, links opened by the operating system, file associations, packaging, and the bridge between Electron and the app.

In plain words
What is it for?
It helps modify Electron windows, menus, preload and bridge code, deep links, file handling, single-instance and multi-window behavior, packaging, branding, and desktop UI verification.
Why use it?
It keeps desktop-only changes separate from the web application and highlights the security and release impact of changing native entry points or the renderer bridge.

Skill for Claude CodeCodex

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 skills/gridaco/grida/desktop
Any agent
npx skills add gridaco/grida --skill desktop
Clone the repo
git clone --depth 1 https://github.com/gridaco/grida

Made for: Claude Code, Codex.

Per session 133 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,988 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. 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 $0.00133 $0.02988
Opus 5 $0.00067 $0.01494
Sonnet 5 $0.00027 $0.00598
Haiku 4.5 $0.00013 $0.00299

Measured 2d ago against content hash 369939eb4924, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

desktop scanned grade A with 1 finding 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 2d ago.

The scan reads SKILL.md. This mod also ships 1 executable file (scripts/audit-release-impact.sh), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

curl -s http://127.0.0.1:9222/json/version
.agents/skills/desktop/SKILL.md · 328 lines

How it starts

The opening of the file, as written. The whole thing — 328 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Grida Desktop - Electron Shell

This skill is for the Electron shell only: main process, windows, menus, preload, native protocol/file entry points, and the renderer bridge surface. The renderer is still the editor's Next.js app under editor/app/desktop/; Electron URL-loads it from http://localhost:3000/desktop/* in dev and https://grida.co/desktop/* in prod.

Use agent-system for the daemon + agent-tenant core, sessions, workspaces, providers, tool execution, HTTP routes, and tests in packages/grida-daemon and packages/grida-ai-agent.

Adjacent: security for the GRIDA-SEC-004 trust boundary, code-react for React code under editor/app/desktop/** and editor/scaffolds/desktop/**.

When to use this skill

  • Editing desktop/src/**, desktop/forge.config.ts, desktop/Info.plist, or desktop packaging/dev-server wiring.
  • Changing desktop/src/main.ts, window.ts, menu.ts, preload, bridge contract, app branding, host-app integration, deep links, file associations, single-instance behavior, or multi-window routing.
  • Touching editor/app/desktop/**, editor/scaffolds/desktop/**, or editor/lib/desktop/** because the UI depends on window.grida.
  • Debugging "works in browser but not in desktop" or "only repros in Electron" issues.
  • Verifying the desktop app through CDP / Playwright.
  • Touching CSP or proxy behavior for /desktop/*.
  • Auditing whether linked-package or hosted Desktop renderer changes require a native version bump or coordinated release.

Use agent-system to implement core agent behavior that can be tested without Electron: packages/grida-daemon/**, packages/grida-ai-agent/**, daemon HTTP routes, sessions, files/workspaces, providers, tools, runtime, skills, and BYOK/secrets. Also use this skill when auditing whether that work changes the packaged Desktop payload or its compatibility with the hosted renderer.


Shape

Read the full file on GitHub · 328 lines

Files

What ships with it

1 file 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. 2d ago First seen · 328 lines · 133 tokens per session scan A 369939eb4924

Subscribe to this mod's changes

desktop is a skill published in the GitHub repository gridaco/grida (2,629 stars, last pushed 11d ago), licensed Apache-2.0. It adds 133 tokens to every session and 2,988 once invoked, about $0.0007 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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