Christian-Katzmann
Community indexed
App It
A Claude Code + Codex skill that turns a local project into a macOS Dock-launchable app — native window, its own icon, no Electron. [The Windows version is in BETA]
Overview
A Claude Code + Codex skill that turns a local project into a macOS Dock-launchable app — native window, its own icon, no Electron. [The Windows version is in BETA]
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app-it - Make a local project or hosted web app launchable from the Dock
App It installs local projects under ~/Applications/App It/ as clickable
macOS apps: click opens, window close stays warm, Cmd+Q cleans up.
Non-Negotiables
- Run
templates/inspect.shfirst and read the output before editing. - Trust disk over docs. Verify project type from
package.json, config files, and actual scripts when docs disagree. - Decide for the user when the default is defensible. Ask only before a destructive or genuinely ambiguous choice.
- Copy the shipped templates into the target project and customize through
scripts/app-it.config.json. Do not re-derive launcher patterns. - Keep App It local and reversible. No Electron/Tauri migration unless the project already has one or Strategy A cannot satisfy the requirement.
- Verify the installed app path, runtime port truth, warm relaunch, Cmd+Q cleanup, and report honestly when GUI-only checks need a human.
- When wrapping a hosted app, keep auth with the host. Never copy sessions,
cookies, API keys, or another user's auth into a local bundle. For a Claude
Artifact that uses hosted runtime APIs (
window.claude,window.storage, MCP prompts, or Claude-provided auth), package the published/sharedclaude.aiURL rather than copied source.
Reference Map
Open these only when the inspection or chosen path needs them:
references/project-inspection.md- inspect output, app naming, bundle IDs, multi-app signals, and framework recipes.references/strategies.md- A1 native, Chrome fallback, A2 static, A3 multi-server, A4 CLI, existing Electron/Tauri/NW.js, and Strategy D.references/ports-and-worktrees.md- worktrees, runtime port truth, hardcoded/env ports, and framework port cheat sheet.references/generated-files.md- allowed files, templates, config JSON, placeholders, scripts, and generated docs.references/assets-and-icons.md- icon discovery, rejection, preview, placeholders, and replacement.references/fsa-and-chromium.md- File System Access, polyfill, and Chromium-only routing.references/verification.md- build/install/runtime checks, smoke checks, human/deferred buckets, and cleanup semantics.references/troubleshooting.md- Gatekeeper/iCloud rescue, stale wrappers,desktop:doctor, and anti-patterns.references/report-template.md- exact final report format. Use it for the chat reply anddocs/desktop-launcher.app-it-report.md.
Templates
Copy templates from templates/; do not rewrite them. They encode the Mach-O
entrypoint, NFC/NFD-safe matching, daemon servers, two-stage cleanup, runtime
port fallback, descendant reattach, Finder/Dock PATH, menu shortcuts, and
doctor checks. See references/generated-files.md for the roster.
Workflow
1. Inspect
Run the bundled inspector from the target project root:
/path/to/plugins/app-it/skills/app-it/templates/inspect.sh
Use its output for worktree status, project type, scripts, hardcoded ports, multi-app/cohabiting-server signals, FSA, port collisions, toolchains, runtime paths, and assets.
Read references/project-inspection.md before resolving app count, names,
bundle IDs, existing desktop configs, or project type. Read
references/ports-and-worktrees.md for worktrees, hardcoded ports, proxy
targets, or cohabiting frontend/backend servers.
2. Decide
For each user-facing app, choose one strategy:
Existing Electron/Tauri/NW.js config?
yes -> Strategy B
no -> native desktop requirements beyond web shell?
yes -> Strategy D
no -> FSA real-I/O or Chromium-only API?
yes -> A1 Chrome fallback
no -> static built bundle, no server?
yes -> A2
no -> cohabiting frontend + backend?
yes -> A3
no -> A1 native WebKit (default)
Default to A1 native WebKit. Use Chrome fallback for real File System Access or
other Chromium-only APIs. Use Electron/Tauri/NW.js only when the project already
owns that path. Read references/strategies.md before anything beyond simple
A1.
3. Build
Touch as few target-project files as possible. Read generated-files for the
allowed surface/config, assets-and-icons before icon work, and
fsa-and-chromium before FSA polyfill or Chrome fallback.
4. Verify
Verification is mandatory. Read references/verification.md and run applicable
programmatic checks:
Check executable shape, plist/icon validity, installed-path open, runtime port,
HTTP response, process and LaunchServices identity, Cmd+Q cleanup via Apple
Event, red-X warm state, and warm relaunch. Use desktop:verify for the
headless loop and desktop:doctor for ownership/template drift. Prefer their
--json modes for automation. desktop:verify uses APP_IT_SMOKE=1 and marks
GUI-only checks manual unless a visible app window is actually driven.
Never claim GUI-only checks passed unless you can actually see them. Put window content, Dock icon identity, autoplay, and FSA reconnect into the human bucket when the environment cannot verify them.
5. Report
End with the references/report-template.md report inline and in
docs/desktop-launcher.app-it-report.md: strategy, changed files, icon source,
build/install/quit commands, installed paths, verification, Dock Stack note,
limitations, and decisions.
Stage new files with git add only when that is the repository's local
convention or the user asked for staging. Do not commit unless asked.
Quick Defaults
- Install destination:
~/Applications/App It/. - Bundle ID prefix:
com.user.<slug>, unless the project has a real domain. - Preferred single-server ports: Next/CRA
3000, Vite/SvelteKit5173, Astro4321, Flask/FastAPI project default. - Port mode: keep
port_mode: "fallback"unless browser storage, OAuth callbacks, or project config must stay on exactly one localhost origin. Useport_mode: "fixed"for that case; a busy preferred port is then a clear launch failure, not an upward scan. - Framework recipes live in
project-inspectionandports-and-worktrees. Translate examples to the package manager present. - Next: use the direct binary when a script hardcodes flags, wraps
next dev, or needs host/port flags:pnpm exec next dev --hostname 127.0.0.1 --port "$PORT"(translatepnpmto npm/yarn/bun as needed). Plain scripts that only runnext devare OK when they already honorPORT. - Vite/SvelteKit command:
npm run dev -- --host 127.0.0.1 --port "$PORT" --strictPort. - Astro command:
npm run dev -- --host 127.0.0.1 --port "$PORT". - Chrome fallback shutdown: document
desktop:quitas primary cleanup because Chrome close/Cmd+Q do not map to the Swift wrapper lifecycle. - Command surface:
scripts/app-itroutesinspect | apply | verify | upgradeover the vendored scripts (a router, not a binary or runtime dep).upgrade(desktop-upgrade.sh) re-vendors newer templates when the manifest'stemplate_versionis behind, touches only app-it's own artifacts, and rolls back if the post-upgrade verify fails. Seereferences/generated-files.md.
Stop Signs
Stop and explain clearly if the project needs blocking setup/auth, the start command cannot honor the launcher port, a smoke test proves the project is broken before the launcher, or the environment is hostile to verification.
What Not To Do
- Do not make App It explicit-only.
- Do not default to Chrome for vanilla web apps.
- Do not attach to an arbitrary externally running server.
- Do not use
kill -TERMon the wrapper to test Cmd+Q. - Do not hardcode
com.$(id -un).*bundle IDs. - Do not derive
PROJECT_ROOTfrom the installed app path. - Do not remove PATH augmentation, runtime port fallback, daemon-mode warm relaunch, two-stage cleanup, native menu shortcuts, or doctor diagnostics.
File metadata
name: app-it description: >- Turn a local project or a hosted web app (including a published Claude Artifact URL) into a macOS Dock-launchable .app. Use when the user wants a clickable Dock app, local app package, icon, App It install, hosted-URL or Artifact wrapper, or repeatable desktop launcher. Defaults to native Swift WebKit, shipped templates, and verification of build, launch, ports, quit, warm relaunch, and cleanup.
View original text
---
name: app-it
description: >-
Turn a local project or a hosted web app (including a published Claude
Artifact URL) into a macOS Dock-launchable .app. Use when the user wants a
clickable Dock app, local app package, icon, App It install, hosted-URL or
Artifact wrapper, or repeatable desktop launcher. Defaults to native Swift
WebKit, shipped templates, and verification of build, launch, ports, quit,
warm relaunch, and cleanup.
---
# app-it - Make a local project or hosted web app launchable from the Dock
App It installs local projects under `~/Applications/App It/` as clickable
macOS apps: click opens, window close stays warm, Cmd+Q cleans up.
## Non-Negotiables
1. Run `templates/inspect.sh` first and read the output before editing.
2. Trust disk over docs. Verify project type from `package.json`, config files,
and actual scripts when docs disagree.
3. Decide for the user when the default is defensible. Ask only before a
destructive or genuinely ambiguous choice.
4. Copy the shipped templates into the target project and customize through
`scripts/app-it.config.json`. Do not re-derive launcher patterns.
5. Keep App It local and reversible. No Electron/Tauri migration unless the
project already has one or Strategy A cannot satisfy the requirement.
6. Verify the installed app path, runtime port truth, warm relaunch, Cmd+Q
cleanup, and report honestly when GUI-only checks need a human.
7. When wrapping a hosted app, keep auth with the host. Never copy sessions,
cookies, API keys, or another user's auth into a local bundle. For a Claude
Artifact that uses hosted runtime APIs (`window.claude`, `window.storage`,
MCP prompts, or Claude-provided auth), package the published/shared
`claude.ai` URL rather than copied source.
## Reference Map
Open these only when the inspection or chosen path needs them:
- `references/project-inspection.md` - inspect output, app naming, bundle IDs,
multi-app signals, and framework recipes.
- `references/strategies.md` - A1 native, Chrome fallback, A2 static, A3
multi-server, A4 CLI, existing Electron/Tauri/NW.js, and Strategy D.
- `references/ports-and-worktrees.md` - worktrees, runtime port truth,
hardcoded/env ports, and framework port cheat sheet.
- `references/generated-files.md` - allowed files, templates, config JSON,
placeholders, scripts, and generated docs.
- `references/assets-and-icons.md` - icon discovery, rejection, preview,
placeholders, and replacement.
- `references/fsa-and-chromium.md` - File System Access, polyfill, and
Chromium-only routing.
- `references/verification.md` - build/install/runtime checks, smoke checks,
human/deferred buckets, and cleanup semantics.
- `references/troubleshooting.md` - Gatekeeper/iCloud rescue, stale wrappers,
`desktop:doctor`, and anti-patterns.
- `references/report-template.md` - exact final report format. Use it for the
chat reply and `docs/desktop-launcher.app-it-report.md`.
## Templates
Copy templates from `templates/`; do not rewrite them. They encode the Mach-O
entrypoint, NFC/NFD-safe matching, daemon servers, two-stage cleanup, runtime
port fallback, descendant reattach, Finder/Dock `PATH`, menu shortcuts, and
doctor checks. See `references/generated-files.md` for the roster.
## Workflow
### 1. Inspect
Run the bundled inspector from the target project root:
```bash
/path/to/plugins/app-it/skills/app-it/templates/inspect.sh
```
Use its output for worktree status, project type, scripts, hardcoded ports,
multi-app/cohabiting-server signals, FSA, port collisions, toolchains, runtime
paths, and assets.
Read `references/project-inspection.md` before resolving app count, names,
bundle IDs, existing desktop configs, or project type. Read
`references/ports-and-worktrees.md` for worktrees, hardcoded ports, proxy
targets, or cohabiting frontend/backend servers.
### 2. Decide
For each user-facing app, choose one strategy:
```text
Existing Electron/Tauri/NW.js config?
yes -> Strategy B
no -> native desktop requirements beyond web shell?
yes -> Strategy D
no -> FSA real-I/O or Chromium-only API?
yes -> A1 Chrome fallback
no -> static built bundle, no server?
yes -> A2
no -> cohabiting frontend + backend?
yes -> A3
no -> A1 native WebKit (default)
```
Default to A1 native WebKit. Use Chrome fallback for real File System Access or
other Chromium-only APIs. Use Electron/Tauri/NW.js only when the project already
owns that path. Read `references/strategies.md` before anything beyond simple
A1.
### 3. Build
Touch as few target-project files as possible. Read `generated-files` for the
allowed surface/config, `assets-and-icons` before icon work, and
`fsa-and-chromium` before FSA polyfill or Chrome fallback.
### 4. Verify
Verification is mandatory. Read `references/verification.md` and run applicable
programmatic checks:
Check executable shape, plist/icon validity, installed-path open, runtime port,
HTTP response, process and LaunchServices identity, Cmd+Q cleanup via Apple
Event, red-X warm state, and warm relaunch. Use `desktop:verify` for the
headless loop and `desktop:doctor` for ownership/template drift. Prefer their
`--json` modes for automation. `desktop:verify` uses `APP_IT_SMOKE=1` and marks
GUI-only checks manual unless a visible app window is actually driven.
Never claim GUI-only checks passed unless you can actually see them. Put window
content, Dock icon identity, autoplay, and FSA reconnect into the human bucket
when the environment cannot verify them.
### 5. Report
End with the `references/report-template.md` report inline and in
`docs/desktop-launcher.app-it-report.md`: strategy, changed files, icon source,
build/install/quit commands, installed paths, verification, Dock Stack note,
limitations, and decisions.
Stage new files with `git add` only when that is the repository's local
convention or the user asked for staging. Do not commit unless asked.
## Quick Defaults
- Install destination: `~/Applications/App It/`.
- Bundle ID prefix: `com.user.<slug>`, unless the project has a real domain.
- Preferred single-server ports: Next/CRA `3000`, Vite/SvelteKit `5173`, Astro
`4321`, Flask/FastAPI project default.
- Port mode: keep `port_mode: "fallback"` unless browser storage, OAuth
callbacks, or project config must stay on exactly one localhost origin. Use
`port_mode: "fixed"` for that case; a busy preferred port is then a clear
launch failure, not an upward scan.
- Framework recipes live in `project-inspection` and `ports-and-worktrees`.
Translate examples to the package manager present.
- Next: use the direct binary when a script hardcodes flags, wraps `next dev`,
or needs host/port flags:
`pnpm exec next dev --hostname 127.0.0.1 --port "$PORT"` (translate `pnpm`
to npm/yarn/bun as needed). Plain scripts that only run `next dev` are OK
when they already honor `PORT`.
- Vite/SvelteKit command:
`npm run dev -- --host 127.0.0.1 --port "$PORT" --strictPort`.
- Astro command: `npm run dev -- --host 127.0.0.1 --port "$PORT"`.
- Chrome fallback shutdown: document `desktop:quit` as primary cleanup because
Chrome close/Cmd+Q do not map to the Swift wrapper lifecycle.
- Command surface: `scripts/app-it` routes `inspect | apply | verify | upgrade`
over the vendored scripts (a router, not a binary or runtime dep). `upgrade`
(`desktop-upgrade.sh`) re-vendors newer templates when the manifest's
`template_version` is behind, touches only app-it's own artifacts, and rolls
back if the post-upgrade verify fails. See `references/generated-files.md`.
## Stop Signs
Stop and explain clearly if the project needs blocking setup/auth, the start
command cannot honor the launcher port, a smoke test proves the project is
broken before the launcher, or the environment is hostile to verification.
## What Not To Do
- Do not make App It explicit-only.
- Do not default to Chrome for vanilla web apps.
- Do not attach to an arbitrary externally running server.
- Do not use `kill -TERM` on the wrapper to test Cmd+Q.
- Do not hardcode `com.$(id -un).*` bundle IDs.
- Do not derive `PROJECT_ROOT` from the installed app path.
- Do not remove PATH augmentation, runtime port fallback, daemon-mode warm
relaunch, two-stage cleanup, native menu shortcuts, or doctor diagnostics.
Review the source
Price & running costs
- Get the skill
- Price unconfirmed
- Run it
- Requirements have not been confirmed. Check the source for agent, API and service charges.
- License
- MIT
- Price unconfirmed
- We have not confirmed a price for this skill. Existing source and install links remain available.
Free to get does not mean free to run. Price labels are not safety ratings. Submit pricing information →
Skill source recorded
Skill instructions are recorded. This is not a runtime test, safety guarantee or compatibility certification.
Review before install: Avoid automatic install
License: MIT
- Dependency or permission surface needs review
- Permission surface may require sandboxing
- Quality score needs review
- Permission surface needs review: secrets or environment access, shell or command execution
- Stars/forks activity: 217 stars, 21 forks; issue activity unavailable in current metadata
- Dependency/runtime risk: command execution surface, credential or environment access
- Permission surface: secrets or environment access, shell or command execution
Listed tools are metadata hints, not tested compatibility. Agent prompts are suggested handoffs.
Start with one small task
- 1Read the source. Confirm the input, expected output, dependencies and permissions.
- 2Ask your agent for a plan. Approve setup and any costs before running a small isolated test.
- 3Check the output and changed files. Report only what actually ran; keep the source revision for reproduction.
Check the source for dependencies, API keys and third-party costs. A public repository does not mean every service is free.
Source & usage notes
Indexed
Repository metadata and review signals are advisory. Popularity, source discovery and successful execution are different facts.
- Source repository
- Christian-Katzmann/app-it
- License
- MIT
- Version
- 1.0.0
- Last GitHub push
- Jul 13, 2026
- Registry updated
- Sep 7, 2026
- Instruction path
- plugins/app-it/skills/app-it/SKILL.md @ d12cd1241904
Version reported in registry metadata; check source releases before relying on it.
Quality
75/100
Strong
Trust
64/100
Sandbox only
Audit
78/100
Needs review
- Dependency or permission surface needs review
- Permission surface may require sandboxing
- Quality score needs review
- Permission surface needs review: secrets or environment access, shell or command execution
- Stars/forks activity: 217 stars, 21 forks; issue activity unavailable in current metadata
- Dependency/runtime risk: command execution surface, credential or environment access
- Permission surface: secrets or environment access, shell or command execution
- Verified installs
- —
- Outcomes
- —
Copies are not installs. Installation counts require a reported successful installation; they are not a blanket quality guarantee.
Agent access
This page exposes the same decision, trust, audit, use-case, and install signals through the Registry API, so agents can rank this skill without scraping the UI.
More details
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"Stars/forks activity: 217 stars, 21 forks; issue activity unavailable in current metadata",
"Dependency/runtime risk: command execution surface, credential or environment access",
"Permission surface: secrets or environment access, shell or command execution"
]
},
"agent_proven": {
"version": "agent-proven-v1",
"score": 0,
"tier": "unproven",
"label": "Needs first agent run",
"summary": "No agent outcome reports yet. Use Resolve, run one narrow sandbox task, then report the result.",
"metrics": {
"totalOutcomes": 0,
"successfulOutcomes": 0,
"failedOutcomes": 0,
"installAttempts": 0,
"installSuccessRate": null,
"successRate": null,
"recentSuccessRate": null,
"recentFailureRate": null,
"riskBlocked": 0,
"setupRequired": 0,
"notRelevant": 0,
"avgOutputQuality": null,
"avgTimeToUsefulMs": null,
"productionOutcomes": 0,
"humanReviewRequired": 0,
"uniqueAgents": 0,
"lastOutcomeAt": null
},
"signals": [],
"penalties": [
"No real agent outcome evidence yet"
]
},
"audit": {
"score": 78,
"risk_level": "needs_review",
"risk_label": "Needs review",
"warnings": [
"Dependency or permission surface needs review",
"Permission surface may require sandboxing",
"Quality score needs review",
"Permission surface needs review: secrets or environment access, shell or command execution",
"Stars/forks activity: 217 stars, 21 forks; issue activity unavailable in current metadata",
"Dependency/runtime risk: command execution surface, credential or environment access",
"Permission surface: secrets or environment access, shell or command execution"
]
},
"safety_gate": {
"tier": "blocked",
"label": "Blocked for auto-install",
"auto_install_policy": "block",
"auto_install_allowed": false,
"human_review_required": true,
"blocked": true,
"recommended_action": "Do not auto-install. Inspect the source, dependencies, and permission surface first."
},
"quality": {
"score": 75,
"label": "Strong"
},
"supply": {
"track": "Coding and developer agents",
"scenario": "Coding agents",
"maintenance": "3mo since push",
"risk": "Needs review"
},
"alternative_skills": [],
"do_not_use_when": [
"teams that need a vendor-supported SLA",
"high-compliance environments without internal security review",
"No major risk signals from current metadata",
"High-risk permission hints: Shell or command execution, Secrets or environment access",
"Dependency or permission surface needs review",
"Permission surface may require sandboxing",
"Quality score needs review",
"Permission surface needs review: secrets or environment access, shell or command execution"
],
"agent_contract": {
"task_input": "Use App It in an agent workflow",
"recommended_action": "Do not auto-install. Inspect the source, dependencies, and permission surface first.",
"install_policy": "block",
"minimum_review_before_use": [
"Trust: 72/100 Strong shortlist",
"Audit: 78/100 Needs review",
"Safety: 30/100 Avoid automatic install",
"Review repository, license, install command, and permission surface before production use."
],
"expected_agent_output": {
"selected_skill": "christian-katzmann-app-it (App It)",
"install_command": "npx skills add Christian-Katzmann/app-it",
"risk_summary": "Needs review; Blocked for auto-install; Review before production",
"verification_result": "Report the smallest successful task, files touched, warnings, and any missing setup."
}
},
"outcome_feedback": {
"endpoint": "https://www.openagentskill.com/api/agent/outcome",
"method": "POST",
"requires_resolve_event_id": true,
"event_id_source": "Use install_receipt.outcome_feedback.event_id or feedback.event_id returned by /api/agent/resolve for the current task.",
"expected_outcomes": [
"success",
"failed",
"not_relevant",
"blocked_by_risk",
"setup_required"
],
"payload_template": {
"event_id": "<install_receipt.outcome_feedback.event_id or feedback.event_id from /api/agent/resolve>",
"skill_slug": "christian-katzmann-app-it",
"task": "Use App It in an agent workflow",
"agent": "codex",
"outcome": "success",
"install_used": true,
"risk_blocked": false,
"setup_required": false,
"task_success": true,
"output_quality": 4,
"error_type": null,
"human_review_required": false,
"workspace": "sandbox",
"time_to_useful_ms": 120000,
"notes": "Report the smallest successful task, setup friction, files touched, and risk notes."
}
},
"endpoints": {
"web": "https://www.openagentskill.com/skills/christian-katzmann-app-it",
"api": "https://www.openagentskill.com/api/agent/skills/christian-katzmann-app-it",
"audit": "https://www.openagentskill.com/skills/christian-katzmann-app-it/audit",
"eval": "https://www.openagentskill.com/api/agent/evals?slug=christian-katzmann-app-it&task=Use%20App%20It%20in%20an%20agent%20workflow&max_risk=medium",
"resolve": "https://www.openagentskill.com/api/agent/resolve?task=Use%20App%20It%20in%20an%20agent%20workflow&agent=codex&max_risk=medium",
"receipt": "https://www.openagentskill.com/api/agent/receipt?task=Use%20App%20It%20in%20an%20agent%20workflow&agent=codex&max_risk=medium&format=text",
"install": "https://www.openagentskill.com/api/skills/christian-katzmann-app-it/install",
"manifest": "https://www.openagentskill.com/api/registry/manifest/christian-katzmann-app-it"
}
}For the creator
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- Creator
- Christian-Katzmann
- Indexed by
- OpenAgentSkill community index
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