What is share-server-control?

A controller for a local server that lets you share work with viewers. It can inspect health, start or stop the server, restart it, and manage private viewing through Tailscale, a private networking service.

Use it to check status, start, stop, or restart the server, and enable or disable private Tailscale viewer access.

It provides one place to manage the server after setup without repeating the initial installation process or exposing administrative access publicly.

share-server-control — Skill for Claude Code by ondrej-svec

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 ondrej-svec/heart-of-gold-toolkit --skill share-server-control

Clone the repo

git clone --depth 1 https://github.com/ondrej-svec/heart-of-gold-toolkit

Made for: Claude Code.

Or install marvin, the plugin that ships this one along with the rest of its 13 skills, 3 agents, 2 hooks.

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/ondrej-svec/heart-of-gold-toolkit/share-server-control/github.svg)](https://agentmods.dev/skills/ondrej-svec/heart-of-gold-toolkit/share-server-control)

Your own site

<a href="https://agentmods.dev/skills/ondrej-svec/heart-of-gold-toolkit/share-server-control"><img src="https://agentmods.dev/badge/skills/ondrej-svec/heart-of-gold-toolkit/share-server-control/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/ondrej-svec/heart-of-gold-toolkit/share-server-control"><img src="https://agentmods.dev/badge/skills/ondrej-svec/heart-of-gold-toolkit/share-server-control.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 664 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits

NVIDIA SkillSpector pass 7 Sept 2026

How audits are shown

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	$0.00664
Opus 5	$0.00022	$0.00332
Sonnet 5	$0.00009	$0.00133
Haiku 4.5	$0.00004	$0.00066

Measured 11d ago against content hash 14e217b0c6a1, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

share-server-control 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 11d ago.

The scan reads SKILL.md. This mod also ships 6 executable files (scripts/disable-viewer.sh, scripts/enable-viewer.sh, scripts/restart.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.

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.

plugins/marvin/skills/share-server-control/SKILL.md · 93 lines

How it starts

The opening of the file, as written. The whole thing — 93 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Control the local share server after it has been set up.

Use this skill when

the user wants to know whether the share server is running
the user wants to start, stop, or restart the local server
the user wants to enable or disable private Tailscale viewer exposure
the user wants the current health/status without re-running setup

Boundaries

This skill may:

inspect the current config and server health
control the macOS LaunchAgent for the reference server
inspect or change Tailscale Serve viewer exposure

This skill may not:

replace first-time setup
expose the publish/admin API remotely
enable Funnel/public internet access by default

Recommended commands

Status

bash scripts/status.sh

Start the local server

bash scripts/start.sh

Stop the local server

bash scripts/stop.sh

Restart the local server

bash scripts/restart.sh

Enable private viewer exposure over Tailscale

bash scripts/enable-viewer.sh --public-base-url "https://<machine>.<tailnet>.ts.net"

Disable private viewer exposure over Tailscale

bash scripts/disable-viewer.sh

Delete a published artifact by slug

heart-of-gold share-server delete <slug>

Delete only an alias pointer

heart-of-gold share-server delete --alias <alias> --onlyAlias

Notes

In v1, lifecycle control assumes the reference server was installed as a macOS LaunchAgent.
If the user has not set up the server yet, stop and use share-server-setup first.
status.sh is the safest first command because it shows LaunchAgent state, health, and Tailscale Serve status together.

Available scripts

scripts/status.sh — show LaunchAgent, health, and viewer exposure status
scripts/start.sh — load the LaunchAgent and start the local share server
scripts/stop.sh — unload the LaunchAgent and stop the local share server
scripts/restart.sh — restart the LaunchAgent cleanly
scripts/enable-viewer.sh — enable private Tailscale Serve exposure for the viewer listener
scripts/disable-viewer.sh — turn off private Tailscale Serve exposure
heart-of-gold share-server delete <slug> — remove a published artifact, its aliases, and its metadata entries
heart-of-gold share-server delete --alias <alias> --onlyAlias — remove only an alias pointer

Read the full file on GitHub · 93 lines

Files

What ships with it

8 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.

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 · 93 lines · 44 tokens per session scan A 14e217b0c6a1

Subscribe to this mod's changes

share-server-control is a skill published in the GitHub repository ondrej-svec/heart-of-gold-toolkit (19 stars, last pushed 22d ago), licensed MIT. It adds 44 tokens to every session and 664 once invoked, about $0.0002 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 2026-08-30.

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