tailscale-diagnostics

tailscale-diagnostics is a skill for Claude Code, Codex from jkrumm/hermes-agent. It costs 20 tokens per session (1,711 once invoked), scanned A, original, no licence file.

A diagnostic guide for checking whether devices connected through Tailscale, a private network service, can reach one another.

In plain words
What is it for?
It is for diagnosing device reachability and checking Tailscale Serve, access-control rules, and tags.
Why use it?
It helps locate access problems involving Tailscale's published services, access rules, or device labels.

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/jkrumm/hermes-agent/tailscale-diagnostics
Any agent
npx skills add jkrumm/hermes-agent --skill tailscale-diagnostics
Clone the repo
git clone --depth 1 https://github.com/jkrumm/hermes-agent

Made for: Claude Code, Codex.

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.

agentmods badge for tailscale-diagnostics

README.md
[![agentmods](https://agentmods.dev/badge/skills/jkrumm/hermes-agent/tailscale-diagnostics.svg)](https://agentmods.dev/skills/jkrumm/hermes-agent/tailscale-diagnostics)
Your own site
<a href="https://agentmods.dev/skills/jkrumm/hermes-agent/tailscale-diagnostics"><img src="https://agentmods.dev/badge/skills/jkrumm/hermes-agent/tailscale-diagnostics.svg" alt="Measured on agentmods" height="20"></a>
Per session 20 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,711 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. Scan, not verified.
Origin unknown 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 $0.00020 $0.01711
Opus 5 $0.00010 $0.00856
Sonnet 5 $0.00004 $0.00342
Haiku 4.5 $0.00002 $0.00171

Measured 5d ago against content hash 0949d450b6d8, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

tailscale-diagnostics 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 5d 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.

Makes network callslowCapability

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

1. **Service itself up?** UptimeKuma via argo (`/uptime-kuma/status` + monitor detail) AND local curl to the loopback port, e.g. `curl -s -o /dev/null -w '%{http_code}' http://127.0.0.1:8787/` → expect 200.
skills/homelab/tailscale-diagnostics/SKILL.md · 61 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

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. 5d ago First seen · 61 lines · 20 tokens per session scan A 0949d450b6d8

Subscribe to this mod's changes

tailscale-diagnostics is a skill published in the GitHub repository jkrumm/hermes-agent (2 stars, last pushed today), with no licence file. It adds 20 tokens to every session and 1,711 once invoked, about $0.0001 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 2026-08-31.

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