What is claude-code-ha CLAUDE.md?

Project instructions for configuring Home Assistant, a system for controlling smart-home devices and automations, through its files and command-line tools.

Use them to edit Home Assistant YAML configuration and look up entity, device, registry, automation, scene, state, or attribute information.

They provide a consistent way to find configuration, inspect devices and entities, and retrieve complete or quick status details.

How danbuhler/claude-code-ha configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to danbuhler/claude-code-ha. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file

curl -O https://raw.githubusercontent.com/danbuhler/claude-code-ha/main/CLAUDE.md

Clone the repo

git clone --depth 1 https://github.com/danbuhler/claude-code-ha

Made for: Claude Code.

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/instructions/danbuhler/claude-code-ha/claude-md/github.svg)](https://agentmods.dev/instructions/danbuhler/claude-code-ha/claude-md)

Your own site

<a href="https://agentmods.dev/instructions/danbuhler/claude-code-ha/claude-md"><img src="https://agentmods.dev/badge/instructions/danbuhler/claude-code-ha/claude-md/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/instructions/danbuhler/claude-code-ha/claude-md"><img src="https://agentmods.dev/badge/instructions/danbuhler/claude-code-ha/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 1,735 This file is loaded in full into every session.

When invoked 1,735 The same file — it is already loaded in full.

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	$0.01735	$0.01735
Opus 5.5	$0.00694	$0.00694
Sonnet 5.5	$0.00347	$0.00347
Haiku 4.5	$0.00173	$0.00173

Measured 2mo ago against content hash 07431cd4ccbb, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

claude-code-ha CLAUDE.md 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 2mo 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.

CLAUDE.md · 252 lines

How it starts

The opening of the file, as written. The whole thing — 252 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Home Assistant Configuration

Instructions for Claude Code when working with Home Assistant.

File Structure

YAML configurations are primarily stored in /config/packages/*.yaml. When searching, check all yaml files in /config/*.yaml and the packages folder.

Configurations and automations should be in self-contained files in the packages/ folder.

Getting Entity/Device Information

Prefer ha-ws for detailed lookups - it provides full context:

# Get comprehensive entity info (registry, state, related automations/scenes)
ha-ws entity get <entity_id>

# Get comprehensive device info (all entities, related automations/scenes)
ha-ws device get <device_id>

# Use --json for full raw data
ha-ws --json entity get sensor.temperature

For quick state checks, ha-api is faster:

ha-api state light.kitchen      # Just the state value
ha-api attr sensor.temperature  # Just attributes

REST API CLI Tool

Use ha-api for REST API interactions:

ha-api <command> [options]

Commands

Command	Description
`states [filter]`	List all entities (optional grep filter)
`state <entity_id>`	Get state of specific entity
`domains`	List entity counts by domain
`devices <device_class>`	Find entities by device_class (motion, door, temperature, etc.)
`search <pattern>`	Search entity IDs by pattern
`call <domain> <service>`	Call a service
`attr <entity_id>`	Show all attributes of an entity
`history <entity_id> [hrs]`	Get history for entity (default: 24 hours)
`get <endpoint>`	GET any API endpoint
`post <endpoint> [json]`	POST to any API endpoint with optional JSON body

Examples

ha-api devices motion           # Find all motion sensors
ha-api devices occupancy        # Find occupancy sensors
ha-api search kitchen           # Find entities containing "kitchen"
ha-api state light.living_room  # Get current state
ha-api attr sensor.temperature  # Show all attributes
ha-api call light turn_on       # Call a service

Read the full file on GitHub · 252 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.

2mo ago First seen · 252 lines · 1,735 tokens per session scan A 07431cd4ccbb

Subscribe to this mod's changes

claude-code-ha CLAUDE.md is an instructions file published in the GitHub repository danbuhler/claude-code-ha (107 stars, last pushed 10mo ago), licensed MIT. It adds 1,735 tokens to every session, about $0.0069 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 2026-08-30.

Hardware and IoT

claude-code-ha CLAUDE.md next to 6 instructions from other repositories
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claude-code-ha: Instructions file for Claude Code