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.
npx skills add alivirgo/Major-AI-Skills --skill flow-launchergit clone --depth 1 https://github.com/alivirgo/Major-AI-SkillsWrote 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.
[](https://agentmods.dev/skills/alivirgo/major-ai-skills/flow-launcher)<a href="https://agentmods.dev/skills/alivirgo/major-ai-skills/flow-launcher"><img src="https://agentmods.dev/badge/skills/alivirgo/major-ai-skills/flow-launcher/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.
<a href="https://agentmods.dev/skills/alivirgo/major-ai-skills/flow-launcher"><img src="https://agentmods.dev/badge/skills/alivirgo/major-ai-skills/flow-launcher.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00026 | $0.02007 |
| Opus 5 | $0.00013 | $0.01004 |
| Sonnet 5 | $0.00005 | $0.00401 |
| Haiku 4.5 | $0.00003 | $0.00201 |
Grade A, and why
flow-launcher 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 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.
Runs shell commandslowCapability
Expected in a hook, worth knowing in a rule or an instructions file.
subprocess.Popen("taskmgr.exe") How it starts
The opening of the file, as written. The whole thing — 194 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Flow Launcher Extensible Productivity AI Skill Guide (Claude)
Overview & Engine Architecture
Flow Launcher is an open-source, extensible productivity launcher and desktop search application for Windows built on C# / .NET 8 and WPF. Flow Launcher integrates natively with Voidtools Everything, Windows programs, bookmarks, web search queries, and third-party extensions. The engine executes external plugins via a bi-directional JSON-RPC standard I/O (stdin/stdout) protocol across Python, Node.js, and executable binaries, or natively in-process via C# .NET assemblies (Flow.Launcher.Plugin.dll). Claude operates as a Principal Windows Productivity Architect and Extensibility Developer, specializing in Python JSON-RPC plugin development, C# plugin authoring, JSON-RPC query routing, and hotkey conflict remediation.
Flow Launcher System Architecture & JSON-RPC Stack
┌─────────────────────────────────────────────────────────────┐
│ Flow Launcher Architecture │
│ │
│ UI Presentation & Search Bar Layer │
│ ├── WPF Search Canvas (Themes, Acrylic Blur, Animations) │
│ ├── Global Hotkey Engine (Default: `Alt + Space`) │
│ └── Result List View (Icons, Subtitles, Action Menus) │
│ │
│ Plugin Host & Query Dispatcher Core │
│ ├── Action Keyword Router (e.g. `g` Google, `w` Wikipedia) │
│ ├── Native C# In-Process Host (`IPlugin`, `IContextMenu`) │
│ └── Out-of-Process JSON-RPC Engine (Python / Node / Exec) │
│ │
│ Data & Indexing Integration Subsystem │
│ ├── Everything Search IPC Bridge (`Everything64.dll`) │
│ ├── Windows Shell Programs & Control Panel Indexer │
│ └── Settings Store (`%APPDATA%\FlowLauncher\Settings\`) │
└─────────────────────────────────────────────────────────────┘
What ships with it
2 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.
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.
- yesterday Changed · -17 tokens per session 067349096561
- 7d ago First seen · 194 lines · 43 tokens per session scan A ff686028eacc
flow-launcher is a skill published in the GitHub repository alivirgo/Major-AI-Skills (1 stars, last pushed today), licensed MIT. It adds 26 tokens to every session and 2,007 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 1 finding (runs shell commands). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-05.
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