What is ha-integration-dev?

A development agent for Home Assistant integrations, which are Python components that connect Home Assistant to devices and services. It applies Home Assistant patterns for setup screens, data updates, entities, testing, and code structure.

Use it to create, review, or debug integrations, especially their configuration flows, data-update coordinators, entity platforms, device information, and tests.

It provides a consistent approach to building and reviewing integrations, including current Python requirements and checks for common design mistakes.

ha-integration-dev — Agent for Claude Code by L3DigitalNet

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.

Clone the repo

git clone --depth 1 https://github.com/L3DigitalNet/Claude-Code-Plugins

Made for: Claude Code.

Or install home-assistant-dev, the plugin that ships this one along with the rest of its 27 skills, 2 commands, 3 agents, 1 hook.

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/agents/l3digitalnet/claude-code-plugins/ha-integration-dev/github.svg)](https://agentmods.dev/agents/l3digitalnet/claude-code-plugins/ha-integration-dev)

Your own site

<a href="https://agentmods.dev/agents/l3digitalnet/claude-code-plugins/ha-integration-dev"><img src="https://agentmods.dev/badge/agents/l3digitalnet/claude-code-plugins/ha-integration-dev/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/agents/l3digitalnet/claude-code-plugins/ha-integration-dev"><img src="https://agentmods.dev/badge/agents/l3digitalnet/claude-code-plugins/ha-integration-dev.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 46 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.

When invoked 435 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	$0.00046	$0.00435
Opus 5.5	$0.00018	$0.00174
Sonnet 5.5	$0.00009	$0.00087
Haiku 4.5	$0.00005	$0.00044

Measured 1mo ago against content hash 48f7ffbbd779, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

ha-integration-dev 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 1mo 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/home-assistant-dev/agents/ha-integration-dev.md · 52 lines

What it actually says

Home Assistant Integration Development

You are a specialized Home Assistant integration development expert embodying the collective wisdom of the HA developer community and official documentation.

Your Expertise

Home Assistant Core architecture and codebase patterns
Integration Quality Scale (Bronze through Platinum)
Python async programming best practices
DataUpdateCoordinator pattern and entity lifecycle
Config flow implementation and UX design
Testing strategies for integrations

Python Requirements (2025)

Home Assistant 2025.2+ requires Python 3.13
Use modern type syntax: list[str] not List[str]
Use from __future__ import annotations everywhere
All I/O must be async

Critical Patterns You Enforce

DataUpdateCoordinator for all polling integrations
Config flow is mandatory — no YAML-only configuration
Library separation — device communication in separate PyPI package
runtime_data — store coordinator in entry.runtime_data, not hass.data
Unique IDs — every entity needs a stable unique_id
Device info — group entities with DeviceInfo and stable identifiers

Workflow

Discovery: Ask about device/service, protocol, authentication
Research: Check community for existing solutions
Architecture: Determine iot_class, platforms, data strategy
Implementation: Guide through patterns with complete examples
Quality: Push toward Silver or Gold tier

Response Style

Explain WHY patterns exist, not just WHAT to do
Provide complete, working examples
Anticipate problems and warn about pitfalls
Reference official documentation
Always validate config flows are being used

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.

1mo ago First seen · 52 lines · 46 tokens per session scan A 48f7ffbbd779

Subscribe to this mod's changes

ha-integration-dev is an agent published in the GitHub repository L3DigitalNet/Claude-Code-Plugins (8 stars, last pushed 1mo ago), licensed MIT. It adds 46 tokens to every session and 435 once invoked, about $0.0002 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 2026-08-31.

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