A startup check for Home Assistant, a system for controlling and monitoring smart-home devices. It checks the connection, stored language, and freshness of saved Home Assistant data, refreshing that data when needed.

Use it at the start of a Home Assistant session or when device status is unclear.

It provides a consistent way to find out whether Home Assistant is ready and whether its saved information is out of date. It also points out missing setup such as credentials.

ha-boot — Skill for Claude Code by gtapps/hermitd

Install

Getting it into your agent

This one installs as part of its plugin. Adding the marketplace and installing the plugin brings it with everything else the plugin ships.

Claude Code

/plugin marketplace add gtapps/hermitd

Claude Code

/plugin install hermitd-homeassistant

Made for: Claude Code.

Or install hermitd-homeassistant, the plugin that ships this one along with the rest of its 18 skills, 3 agents.

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/gtapps/hermitd/ha-boot/github.svg)](https://agentmods.dev/skills/gtapps/hermitd/ha-boot)

Your own site

<a href="https://agentmods.dev/skills/gtapps/hermitd/ha-boot"><img src="https://agentmods.dev/badge/skills/gtapps/hermitd/ha-boot/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/gtapps/hermitd/ha-boot"><img src="https://agentmods.dev/badge/skills/gtapps/hermitd/ha-boot.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 32 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 452 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.

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	$0.00032	$0.00452
Opus 5.5	$0.00013	$0.00181
Sonnet 5.5	$0.00006	$0.00090
Haiku 4.5	$0.00003	$0.00045

Measured 6d ago against content hash fd686a910ab2, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

ha-boot 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 6d 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.

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/hermitd-homeassistant/skills/ha-boot/SKILL.md · 39 lines

What it actually says

HA Boot Check

Run this at the start of every session or when you need to verify HA status. This skill is the single entry point for this project — it also initializes the hermit session.

Steps

Resident startup: Invoke the /hermitd:resident-start skill first to establish readiness before HA work begins. If it errors (e.g. core hermit not initialized), stop and tell the operator to run /hermitd-homeassistant:hatch.
Run ${CLAUDE_PLUGIN_ROOT}/bin/ha-agent-lab boot status --probe and present the result.
Read .hermit/OPERATOR.md for the stored language (in the ## HA hermit section). All user-facing output should use this locale.
Check .hermit/raw/snapshot-ha-normalized-latest.json modification time.
- If older than 24 hours or missing, auto-run ${CLAUDE_PLUGIN_ROOT}/bin/ha-agent-lab ha refresh-context.
Optionally call GetLiveContext via MCP for a quick live snapshot.
Present a summary:
- HA connectivity: ok/failed
- Context: fresh/stale/missing (age in hours)
- Language: the stored locale
- Entity count from last context

If Something Is Missing

No .env or missing token: tell the operator to create .env at the project root and set HOMEASSISTANT_TOKEN.
No endpoint: tell the operator to set HOMEASSISTANT_URL in .env.
No language in OPERATOR.md: ask the operator for their preferred locale.

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.

6d ago Changed · +2 lines fd686a910ab2
11d ago First seen · 37 lines · 32 tokens per session scan A cc3423135d52

Subscribe to this mod's changes

ha-boot is a skill published in the GitHub repository gtapps/hermitd (79 stars, last pushed today), licensed MIT. It adds 32 tokens to every session and 452 once invoked, about $0.0001 per session on Opus 5.5. 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 2026-10-02.

Claude Code Hardware and IoT ai ai-agent anthropic claude claude-code-plugin

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