A guide for choosing how a software-as-a-service product charges customers, such as by usage, credits, prepaid balance, users, or included features.

Use it to compare pricing approaches and design implementation patterns for usage tracking, hard limits, prepaid spending, team seats, or feature flags.

It helps match billing rules to usage patterns, spending limits, and whether value is tied to individual users.

tailscale — Skill for Claude Code by alivirgo

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 alivirgo/Major-AI-Skills --skill tailscale

Clone the repo

git clone --depth 1 https://github.com/alivirgo/Major-AI-Skills

Made for: Claude Code.

Or install mas-desktop-ops, the plugin that ships this one along with the rest of its 7 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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/alivirgo/major-ai-skills/tailscale/github.svg)](https://agentmods.dev/skills/alivirgo/major-ai-skills/tailscale)

Your own site

<a href="https://agentmods.dev/skills/alivirgo/major-ai-skills/tailscale"><img src="https://agentmods.dev/badge/skills/alivirgo/major-ai-skills/tailscale/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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/alivirgo/major-ai-skills/tailscale"><img src="https://agentmods.dev/badge/skills/alivirgo/major-ai-skills/tailscale.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 44 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 1,791 The whole file, excluding the scripts and references it only reads on demand.

Security scan D 3 findings. A grade says what 26 rules found in the file — not that it is safe.

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.

Model	Per session	Once invoked
Fable 5.1	$0.00044	$0.01791
Opus 5	$0.00022	$0.00896
Sonnet 5	$0.00009	$0.00358
Haiku 4.5	$0.00004	$0.00179

Measured 11d ago against content hash 0758a64c1c66, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade D, and why

tailscale scanned grade D with 3 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 11d 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.

Asks for rootmediumPrivilege escalation

A mod that escalates privileges can change anything on the machine, not only the project.

cat <<EOF | sudo tee /etc/sysctl.d/99-tailscale.conf

Downloads and executes remote codehighSupply chain

curl | sh runs whatever the server returns today, which is not necessarily what it returned when this was reviewed.

curl -fsSL https://tailscale.com/install.sh | sh

Makes network callslowCapability

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

curl -fsSL https://tailscale.com/install.sh | sh

plugins/mas-desktop-ops/skills/tailscale/SKILL.md · 128 lines

How it starts

The opening of the file, as written. The whole thing — 128 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Tailscale Mesh VPN AI Skill Guide (Claude)

Overview & Engine Architecture

Tailscale is a zero-configuration, encrypted mesh VPN built on the WireGuard protocol. Unlike legacy hub-and-spoke VPNs, Tailscale creates direct peer-to-peer point-to-point encrypted tunnels between devices across NATs and firewalls using STUN and globally distributed DERP (Designated Encrypted Relay for Packets) fallback relays. Claude operates as a Principal Network Systems Architect and Cloud Security Engineer, specializing in WireGuard overlay networking, Subnet Router deployment, Tailscale MagicDNS resolution, Exit Node routing, and Tailscale ACL Policy management.

Tailscale Mesh Architecture & Control Plane

┌─────────────────────────────────────────────────────────────┐
│                 Tailscale Mesh Topology                     │
│                                                             │
│  Control Plane (Tailscale Coordination Server / Headscale)  │
│  ├── Node Key Exchange & WireGuard Public Key Distribution  │
│  └── Declarative ACL & Tag-Based Access Control Policies    │
│                                                             │
│  Data Plane (Point-to-Point WireGuard Encryption)           │
│  ├── Direct Peer-to-Peer Tunnel (Zero-Hop UDP Port 41641)   │
│  ├── DERP Encrypted Fallback Relay (If symmetric NAT blocks)│
│  └── Subnet Routers (Expose entire 192.168.x.x LANs to Mesh)│
└─────────────────────────────────────────────────────────────┘

Operational Capabilities & Agent Directives

Direct Peer Connection Optimization: Diagnose NAT traversal issues using tailscale netcheck and tailscale ping to upgrade high-latency DERP relayed connections into direct zero-hop UDP WireGuard tunnels.
Subnet Router & Exit Node Setup: Author production Linux setup scripts to enable IPv4/IPv6 packet forwarding, configure IP masquerading (iptables/nftables), and advertise CIDR routes.
MagicDNS & Split-DNS Troubleshooting: Remediate Linux systemd-resolved, resolv.conf, and Windows DNS search order conflicts to ensure .ts.net and 100.x.y.z hostnames resolve instantly.
Tailscale Funnel & Serve Configuration: Expose secure local web services to the public internet using Tailscale Funnel with automatic TLS certificate provisioning.

Read the full file on GitHub · 128 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.

11d ago First seen · 128 lines · 44 tokens per session scan D 0758a64c1c66

Subscribe to this mod's changes

tailscale is a skill published in the GitHub repository alivirgo/Major-AI-Skills (1 stars, last pushed today), licensed MIT. It adds 44 tokens to every session and 1,791 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it D with 3 findings (asks for root, downloads and executes remote code, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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